| Names | |
|---|---|
| Preferred IUPAC name | 4,5-dichloro-2-n-octyliisothiazol-3(2H)-one |
| Pronunciation | /ˌfɔːr.faɪv.daɪˈklɔːr.oʊ.tuː.enˈɑːk.tɪl.fɔːr.aɪ.soʊ.θaɪ.əˈzoʊ.lɪn.θri.oʊn/ |
| Identifiers | |
| CAS Number | 64359-81-5 |
| Beilstein Reference | 3417062 |
| ChEBI | CHEBI:83567 |
| ChEMBL | CHEMBL2103837 |
| ChemSpider | 23730497 |
| DrugBank | DB11361 |
| ECHA InfoCard | echa.europa.eu/infocard/100.043.301 |
| EC Number | 252-179-2 |
| Gmelin Reference | Gm 11 824 |
| KEGG | C18506 |
| MeSH | D017967 |
| PubChem CID | 157375 |
| RTECS number | GG5775000 |
| UNII | 0T8YOI32FQ |
| UN number | UN3082 |
| CompTox Dashboard (EPA) | DJ42N1G1O9 |
| Properties | |
| Chemical formula | C11H17Cl2NOS |
| Molar mass | molar mass: 334.3 g/mol |
| Appearance | White powder |
| Odor | characteristic |
| Density | 1.28 g/cm³ |
| Solubility in water | Insoluble |
| log P | 3.9 |
| Vapor pressure | 2.5 x 10⁻⁷ mm Hg (25°C) |
| Acidity (pKa) | pKa = 7.34 |
| Basicity (pKb) | 6.2 |
| Magnetic susceptibility (χ) | -59.0 × 10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.540 |
| Viscosity | 172.7 mPa.s (25°C) |
| Dipole moment | 4.73 D |
| Pharmacology | |
| ATC code | D08AC02 |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes severe skin burns and eye damage. Very toxic to aquatic life with long lasting effects. |
| GHS labelling | GHS02, GHS05, GHS06, GHS09 |
| Pictograms | GHS05,GHS07,GHS09 |
| Signal word | Danger |
| Hazard statements | H302, H314, H317, H400, H410 |
| Precautionary statements | P261, P273, P280, P301+P312, P302+P352, P305+P351+P338, P332+P313, P337+P313, P362+P364 |
| NFPA 704 (fire diamond) | 3-2-0 |
| Flash point | > 102.5 °C |
| Autoignition temperature | 160°C |
| Lethal dose or concentration | LD50 oral rat 300 mg/kg |
| LD50 (median dose) | Rat oral LD50: 647 mg/kg |
| NIOSH | GNM6D3D01T |
| PEL (Permissible) | PEL not established |
| REL (Recommended) | 0.08 mg/m³ |
| Category | Detail | Technical Commentary |
|---|---|---|
| Product Name & IUPAC Name | 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One IUPAC: 2-octyl-4,5-dichloro-2H-isothiazol-3-one |
Commercial and regulatory documentation references both the common name and IUPAC nomenclature to reduce ambiguity in cross-border shipments and technical audits. Large-scale formulators often request IUPAC names to verify structural compatibility for end-uses such as paints, adhesives, and preservatives. |
| Chemical Formula | C11H17Cl2NOS | The formula provides the elemental backbone for mass balance calculations in production. Variability in the alkyl chain and halogen substitution pattern affects final product selection and intermediate purification demands. |
| Synonyms & Trade Names | Octylisothiazolinone, OIT, DCOIT, 4,5-Dichloro-2-octylisothiazolin-3-one | Different commercial sectors use consistent shorthand (OIT, DCOIT). This reduces mislabeling risk during mixing, storage, and shipping. Manufacturing documentation carries all commonly accepted synonyms to satisfy traceability and GHS labelling demands. |
| HS Code & Customs Classification | 2934990090 (typical for isothiazolinones, subject to jurisdictional interpretation) | Classification falls under HS code 2934 for heterocyclic compounds, with detailed sub-coding varying by customs territory. Whenever regulatory criteria shift, codes get updated in the ERP system to avoid clearance delays. Multinational shipments require close tracking of customs interpretation changes for biocidal chemicals. |
Octylisothiazolinone production starts with selection of octylamine grade and the chlorination catalyst for dichloro substitution. Impurity profile is highly impacted by upstream raw material variability and batch temperature control through the ring closure step. Technical teams routinely audit solvent residuals and unchlorinated side products, especially if product grades are destined for regulated coatings and marine antifouling uses. Process adjustments and purification intensity depend on customer purity requirements, sometimes calling for multiple distillation or crystallization runs before lot release.
Batch consistency controls focus on spectral fingerprinting, halogen balance, and absence of over-chlorinated or ring-opened impurities, as these impact both stability and downstream toxicological profile. Sampling frequency and QC compounds tracked may differ regionally, shaped by evolving local regulations or customer validation needs beyond minimum standard checks.
Formulators note application sensitivity: biocidal efficacy and regulatory compliance in paints, coatings, or plastics demand tight impurity and stability control, as in-can stability or UV-exposure resistance shifts with minor compositional drift. Bulk storage and handling facilities set up contamination controls to prevent cross-reactivity, especially when tanks handle other halogenated preservatives. Exposure to moisture or high temperature during transport can promote off-odour formation and product degradation, raising the need for robust packaging agreed upon with end users and logistics partners.
Across typical industrial lots, 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One presents as either a viscous liquid or low-melting solid, with color varying from pale yellow to amber based on trace impurity and grade. Technical and biocidal grades occasionally show darker hues due to allowable organic byproducts within permissible impurity thresholds. Distinct sulfurous odor identifies on-site product in active production units.
No standard melting or boiling range applies generically across all supplied grades, given both the molecular structure and formulation specifications can shift physical constants. Density, as measured batch-wise, depends on temperature, purity and minor residual solvents, with quality control teams monitoring specific gravity to detect off-specification fractions.
Stability in warehouse and end-user storage mainly hinges on exclusion of reactive nucleophiles and prolonged contact with alkalies, as isothiazolinones incorporate electrophilic sulfur-nitrogen functionalities. Careful in-plant design of process lines, using acid-washed and inert-lined transfer piping, restricts premature decomposition in handling systems. Formulators observe the compound’s tendency to react with strong reducing or oxidizing agents.
Solubility in organic solvents tends to outperform aqueous miscibility, especially for technical-grade batches where hydrophobic alkyl substitution dominates. Water-dispersible grades, typically formulated with surfactant adjuvants or cosolvents, permit easier in-plant solution make-up. Continuous process operators track dilution procedures to avoid local precipitation or phase separation, a concern for downstream blending into latex or polymer dispersions.
Target specifications diversify by intended use: biocidal formulations, industrial antifoulants, or intermediate-quality lots demand distinct purity levels, minimum assay, and permitted impurity ceilings. Each batch undergoes release evaluation based on grade-specific parameters rather than a monolithic standard.
Primary process impurities arise from incomplete cyclization, overchlorination, or side-chain oxidation. Quality teams define maximum allowable levels of these based on grade and intended application. Analytical profiling routinely targets isothiazolone ring-opened analogs and non-chlorinated byproducts, rejecting lots displaying off-profile chromatography or mass spectrometry.
Assay determination, impurity quantification, and identity verification require validated methods—typically involving HPLC with UV or MS detection. Standard operating procedures call for calibration with reference standards matched to each product grade. For specialized customer requirements, tailored analytical methods or expanded impurity panels may apply. The final release standard is subject to internal quality control criteria and customer requirements.
Supply chain robustness means selecting alkylamines and dichlorothioketones with traceable origin, matching chemical purity to targeted specification. Alternative sourcing from regionally available precursors may demand recalibration of process controls.
Typical production routes employ stepwise or one-pot oxidative cyclization of N-octylthioalkyl precursors with controlled chlorination. The reaction’s efficiency correlates to reagent quality and water/solvent partitioning. Parallel optimization focuses on minimizing unreacted starting materials and byproduct chlorinated amines by kinetic and pH tuning.
Temperature, pH variance, oxidant feed, and mixing speed represent frontline variables. Online sampling and at-line analytical screens detect incomplete conversion or impurity build-up. Downstream, vacuum distillation, liquid-liquid extraction, or column purification address both main product and side-product removal, and are tailored depending on batch size and purity requirement.
Batch-to-batch consistency falls under routine scrutiny. In addition to final assay and impurity checks, some customers request microbial, colorimetric, or extended stability data for documentary review. Deviation management flags and investigates any trend of out-of-trend data, with corrective actions recorded as part of ongoing GMP compliance.
4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One contains reactive S–N and C–Cl moieties, providing handles for nucleophilic substitution, ring opening, and reduction. Reactions with primary amines, strong bases or thiols are monitored closely in customer applications, as such transformation often undermines biocidal efficacy and shelf stability.
Catalyst choice, solvent polarity, and controlled temperatures remain pivotal. Chlorinated systems require neutral or slightly acidic wet-phase to suppress undesired hydrolysis. Modification with downstream functional groups, or transformation to quaternary salt derivatives, proceeds under carefully limited oxygen and moisture exposure.
As a precursor or building block, this isothiazolinone produces several specialty derivatives—biocidal polymers, antifouling coatings intermediates, or custom alkyloxy isothiazolinones. Each derivative’s manufacturing window reflects the original product’s purity and reactivity limits.
Temperature and humidity levels require tight regulation to maintain shelf stability, especially for unformulated concentrate supplied in steel or HDPE drums. Exposure to direct light or oxygen risks product degradation and discoloration. Nitrogen-blanketing bulk tanks protects against oxidative breakdown for higher-purity grades.
Product’s chemical activity mandates resistance-tested packaging. Long-term storage employs lined, corrosion-inhibited steel or high-density polyethylene drums. Batch release packaging compatibility is periodically verified with finished product and blank samples.
Visible color shift, odor intensification, or crystallization signal degradation. Shelf life can be significantly shortened by moisture or inappropriate blending. Technical assessment of end-of-life material involves both analytical re-testing and visual inspection to prevent downstream failures.
Labeling requires alignment with isothiazolinone class hazard categories—acute toxicity, skin sensitization, and aquatic toxicity. Packaging and documentation reflect the latest regulatory updates by region and supply chain destination.
Operators must utilize eye and skin protection during handling. Airborne release in poorly ventilated workspaces should be prevented, and local exhaust or closed transfer lines enforced at transfer and packaging points. Spill procedures address both local containment and off-gassing risks.
Acute and chronic toxicity levels relate to concentration, exposure time, and handling practices. Typical customer-facing formulations dilute the active content well below raw material toxicity thresholds, but bulk or concentrate exposure still demands robust PPE protocols.
Practical limits derive from in-plant air monitoring, solvent vapor studies, and medical surveillance reporting. Direct skin and eye contact present sensitization and irritation risks; training on emergency wash-down and first-response guidelines is part of standard team induction.
Annual output of 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One hinges on purification throughput and quality of key inputs. In recent years, periodic capacity expansions have targeted bottleneck steps such as isothiazolinone condensation and downstream impurity separation. Lower-grade streams from reactor trains often meet standard industrial applications, but higher-purity batches require additional fractional distillation and impurity adsorption, which limits premium-grade output. Fluctuations in upstream chlorinated intermediates or octylamine sources impact short-term availability, particularly when specialty grades are specified. Batch continuity is managed through internal quality tracking and safety stock management, with annual campaign planning based on forward order commitments.
Typical lead times start from two to four weeks for standard grades, stretching longer when certification or enhanced traceability is requested. MOQ aligns with downstream packaging configurations—drum and IBC volumes for regular business, tank truck quantities for ongoing procurement programs. Custom purification or certification runs require contractual pre-allocation due to limited flexible capacity for specialty processes.
Product is packaged according to market usage and regulatory standards. Export orders often specify UN-rated HDPE drums or IBCs. Food-contact and pharma-adjacent applications require dedicated packing operations, traceability, and documented line clearance. Technical grades typically load in bulk containers when regional transport rules allow, but purity or compliance-sensitive grades rely on discrete unit packaging to avoid cross-contamination during transit.
Most shipments follow FOB or CIF terms, with major ports in East Asia as shipping origins. Export shipments are restricted according to the certificate of analysis batch release, and enhanced documentary support can be arranged for regulated markets. Payment structuring aligns with industry practice—TT in advance for new relationships, L/C for ongoing customers subject to due diligence, and deferred payment only upon negotiated basis for volume or strategic partnerships.
The largest cost segment is chlorinated precursor and octylamine feedstock, followed by solvent consumption and purification materials. Energy use — especially during controlled cooling and fractionation used for higher purity — must be factored, since these steps heavily influence overall conversion cost. Volatility in both base chemical and specialty precursor pricing creates downstream price pressure, particularly where producers operate without long-term upstream supply agreements.
Raw material price swings arise from changes in the cost of chloro-compounds, octylamine, and specialty solvents. Disruptions in large plants supplying chlorinated organics (either from planned maintenance, unplanned outages, or regulatory intervention) translate quickly into tightness of intermediate supply. Global shipping logistics, trade policy changes, or foreign exchange swings also push input costs higher during periods of instability, with RI (raw ingredient) surges typically passed through on shorter-term supply contracts.
Pricing tiers trace directly back to specification — lower product grade supplies bulk industrial preservative markets, using tolerance bands that allow limited impurities. Premium or high-purity grades, required by stricter customer or regulatory needs, result from multi-stage purification and greater analytical scrutiny, driving up price for those batches. Tailored packaging and certification (such as food-grade compliance, serialization, or documentation for sensitive export markets) add incremental but non-negligible costs owing to dedicated lines and quality protocols.
Production clusters in East Asia, Western Europe, and North America meet most global demand. Shifts in end-use market consumption — particularly in coatings, textiles, and water treatment sectors — influence distribution of merchant supply. Regulatory tightening in EU and US drives demand for compliance-attested grades, while Asian markets contribute the largest volume growth through expansion in industrial processing applications.
Expect moderate upward price movement through 2026, based on projected tightening in specialty raw materials, regional product certification requirements, and persistent supply logistics complexity. Low-grade bulk prices may fluctuate more than premium grades, as swing suppliers enter or exit the market depending on short-term feedstock availability and regulatory scrutiny cycles.
Analysis reflects internal batch cost tracking, major trade association reports, and observed trends from ongoing customer bid cycles in key end-use sectors. Forward-looking assessments blend reported market indices for feedstock chemicals, regional capacity investment disclosures, and cross-referencing with downstream demand signals from high-certification market players.
Recent years have seen process optimization on energy use and waste minimization in leading producer facilities, supporting gradual improvement in output purity and batch consistency. Further investment in traceability-enabling digital systems responds to end-user calls for auditable documentation and batch release history, especially for export to the US and EU.
Revision cycles in biocidal and preservative regulatory regimes, especially in EU and North American markets, periodically force supply chain realignment or trigger proactive process upgrades at the plant level. Stricter import standards require updated certification protocols and, in some instances, new toxicological data sets, raising compliance costs for each relevant grade.
Process changes to address regulatory or customer concerns revolve around batch contamination control and full-lot certificate of analysis generation. Building further supplier resilience involves collaborative forward purchase agreements with upstream chemical producers, ongoing technical investment in advanced purification steps, and expanding segregation of production lines to maintain strict grade separation. Continuous feedback from end-market regulatory shifts steers capital expenditure toward the most exposed or value-added product streams.
Production of 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One serves several markets requiring strong antimicrobial action and precise control of active content. Product consistently goes to:
We designate production lots either as technical, industrial, or high-purity pharmaceutical/personal care grades. Typical mapping—based on feedback from process developers and downstream formulators—aligns as below:
| Grade | Application Sector | Key Control Focus |
|---|---|---|
| Technical | Paints, Industrial Water, General Surface Disinfection | Active content optimization, solvent compatibility, controlled impurity profile to avoid color/odor transfer |
| Industrial | Adhesives, Process Industry, High-Performance Coatings | Batch-to-batch purity, consistency, low residue, minimal by-product generation, validated supply chain traceability |
| High-Purity/Personal Care | Cosmetics, Hygiene Products, Sensitive Medical Uses | Ultra-low residuals, maximum traceability, exhaustive allergen and by-product testing, special packaging |
Three parameters dominate product suitability: active content, impurity profile, and batch consistency. For paints and industrial coatings, the focus lies on color stability, emulsion compatibility, and non-interference with UV resistance layers. Water treatment operators emphasize chemical half-life under relevant temperature/pH cycles. In sensitive applications, peroxide content, trace solvents, and volatile by-products drive both regulatory review and final QC release.
The final release standard is subject to internal QC and individual customer requirements, with analytical methods and retention samples issued per customer contract.
Start with a detailed process survey—final use dictates major grade selection. Paint manufacturers typically request our technical or industrial grade, balancing value and functional shelf life. Cosmetics or medical users seek high-purity output, reflecting risk evaluation.
Reference end-market and destination country rules: limits on certain by-products, such as isothiazolinone residuals, vary by geography. We offer compliance support for REACH, EPA, or other region-specific lists—custom lot release and full batch traceability available for regulated sectors.
Impurity limits and purity targets depend on whether product enters closed systems, open-environmentals, or personal care. Customers with low tolerance for residual solvents or coloring agents should document target thresholds for us during grade selection discussions. Downstream tests reflect typical purity expectation ranges for that segment—exact numbers defined during project scoping.
Low- and mid-scale users in regulated sectors often require smaller fills with special QC documentation; industrial processors may contract for multi-ton batches, optimizing on non-cosmetic criteria. We scale production batch definition and packing format with volume and logistics fit-out.
Request material trial from current production lot; final acceptance drawn from real-batch QC rather than theoretical grades. Physical sample supports in-house formulation and process validation. Any grade-specific requirements must go into the sample request to match the lot release criteria and end-application performance expectations.
Our production sites for 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One maintain certification under recognized quality management frameworks. Typical recognition includes standards regularly audited by internationally acknowledged third-party agencies. Maintenance of these systems demands both real-time and periodic review of documented procedures, deviation controls, root cause analysis, corrective action tracking, and records management. On-site inspections and documentation traceability are integrated into each campaign, supporting consistent batch-to-batch performance. Internal audits focus specifically on points of contamination risk, batch cross-contamination pathways, and operator intervention steps.
Approvals, declarations, or customer-mandated certifications for this product often depend on downstream regulatory or application requirements. For instance, customers supplying to regions with strict biocidal or pesticidal registration regimes may require additional traceability, documentation of process impurities, and chain-of-custody reports. These are handled via qualified release protocols and traceable batch certification. Customization to fit customer testing standards or certification systems is available, with quality release alignment dependent on grade or region as specified in the procurement contract.
For every shipment, standard practice includes providing analytical batch release documentation based on internally defined testing protocols. Typical analysis includes active content quantification, impurity profiling, and identified trace elements, with report forms standardized for ease of review by end-users or regulatory submitters. Where downstream requirements dictate, additional reports such as third-party laboratory confirmation, heavy metal content, or residual solvent quantification can be offered upon arrangement. Long-term supply partners access digital document archives for reference and verification.
Continuous feedstock qualification, streamlined production scheduling, and pre-sourced raw material reserves support stable delivery performance for both batch and campaign-based demand. Inventory strategy adapts to downstream consumption patterns and shipment routes, reducing risk during supply chain disruptions. Contract partners benefit from made-to-order campaigns, priority scheduling, and rolling forecast-based inventory agreements. Spot orders and volume-based pricing discussions follow demand patterns and production lead time.
Core production equipment is dedicated to isothiazolone synthesis, minimizing crossover risks and supporting process consistency. Key control points include feed purity checks, in-process conversion efficiency monitoring, and continuous impurity removal through phase-separated purification. Finished lots undergo final QA approval before dispatch, with each production run traced to raw material batch and operator ID for root cause mapping. Capacity is regularly demonstrated through historical delivery performance to long-term partners, with available flexibility to absorb temporary demand spikes under specific coordination.
Technical sample provision supports project ramp-up, new formulation scaling, and application qualification. Prospective buyers can coordinate evaluation samples by submitting targeted usage requirements and specifying test protocols when custom documentation is necessary. Technical evaluation support is available from our laboratory, subject to capacity planning. Sample dispatch includes test certificates, typical COAs, and storage/stability guidance. The final sample grade, batch size, and logistics follow downstream requirements as negotiated.
Business cooperation plans vary to suit procurement models ranging from one-time spot purchases to multi-year supply agreements. Flexible models can incorporate blanket order scheduling, alternate shipment frequency, or joint inventory management. Price setting, volume commitment, and production prioritization respond to supply security needs, application timelines, and regulatory lead times. Cooperation terms adapt to geographic delivery needs, urgent order support, and supply crisis management by leveraging buffer stockholds and dedicated production lines for high-volume partners. Change order, rescheduling, and batch customization protocols are defined in procurement agreements to avoid disputes and enable responsive service.
Manufacturers intensify research towards increasing purity and targeting lower residual solvent levels for 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One, particularly as regulatory authorities begin to focus more heavily on trace contaminants in industrial biocides. R&D groups also allocate substantial resources to studying alternative raw materials, aiming to maintain supply stability against fluctuations in upstream intermediates. The use of continuous-flow reactors receives heightened attention, with process engineers frequently analyzing reaction kinetics and impurity formation to reduce byproduct loads while boosting the main product's yield.
Markets in water-based coatings, marine antifouling, and high-performance adhesives continue to drive applications for this isothiazolinone class. Technical teams regularly engage with downstream formulators interested in expanding usage for disinfection and preservation of industrial fluids where performance must hold up in harsh or variable pH conditions. Application development sometimes involves collaboration with formulators to create biocidal systems compliant with stringent VOC and hazard regulations.
The main challenge remains in controlling chlorinated side-products during synthesis. Isothiazolinone producers examine reactor design, mixing regimes, and precise dosing of chlorinating agents to minimize unwanted species, which would otherwise complicate both product purification and final regulatory compliance. Advances in inline analytical methods allow QA departments to detect deviations during batch runs and trigger corrective actions—resulting in significantly better batch-to-batch consistency. Removal of unreacted raw materials now relies on multi-stage purification, the optimization of which demands continuous R&D investment. Manufacturers have recently incorporated green solvent systems to address waste minimization and safer worker handling, with incremental but measurable impact on process emissions.
Demand growth in industrial coatings, oilfield chemicals, and preservation formulations will likely push volumes upward over the next half decade. Regional trends indicate solid prospects in Asia-Pacific and EMEA, with regulatory-driven substitution in North America favoring isothiazolinones with clear data packages on residuals and final formulation stability. Margin pressure persists owing to the volatility of specialty chloride intermediates and energy costs. Product differentiation will increasingly depend on technical support and reliable supply of high-assay product grades that endure variable end-user processing environments.
Producers focus on modular plant designs capable of flexible campaign scheduling, which allow for rapid shifts between custom grades or parallel production of related isothiazolinone derivatives. Automated reaction control, supported by real-time chromatographic and spectroscopic monitoring, is now standard for mid-to-large-scale producers aiming for long-term competitive viability. The technical drive also leads to lower-halogen and safer-handling process variants suitable for final product use in sensitive environments (such as medical device preservation and closed system water treatments).
Green chemistry frames raw material selection and process optimization efforts. Teams assess and select reaction auxiliaries and solvents on recyclability, worker exposure risk, and overall carbon footprint. Closed-loop process water recovery and brine minimization strategies show tangible impact, particularly where zero liquid discharge is a site goal or customer requirement. Recent projects highlight re-use of by-products or transformation of spent process streams into less hazardous outputs, underlining regulatory and corporate sustainability commitments embedded in product lifecycle planning.
Technical support staff provide data-driven answers on grade recommendations, storage compatibilities, and compatibility with common synergists or co-biocide systems used in paints, adhesives, and other candidate formulations. At the bench, users frequently request solubility data, pH stability profiles, and advice on avoiding precipitation or decomposition in multi-component mixes. Support is often custom, as physical-chemical behavior varies sharply by application and formulation matrix.
Collaborative projects with customers often involve joint bench and pilot testing, particularly where unusual formulation variables exist (including high viscosity, nonstandard carriers, or presence of specific surfactants or pigments). Process engineers and technical teams work alongside customers to fine-tune dosing, mixing order, and compatibility in the final application environment. Feedback loops between field performance results and production enable quick adaptation of batch parameters for next production runs, supporting rapid troubleshooting and continuous product improvement.
Support extends beyond the delivery of product. After-sales service covers sampling, product validation with end-use processes, and ongoing input on regulatory compliance relevant to domestic and export markets. Recurring customer requests lead to periodic reviews of quality documentation and change notification processes consistent with ISO-based manufacturing sites. Technical documentation includes advice on shelf-life estimation under nominated customer storage conditions, plus waste and residue handling guidance suitable for downstream user EHS protocols.
Our factory produces 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One (DCOIT) through a controlled synthesis route managed at every stage within our own industrial facilities. Decades of focused experience lead our production specialists through each batch, with the end result being a high-purity isothiazolinone used worldwide in demanding industrial environments.
DCOIT plays a critical role as a biocidal active in coatings, marine antifouling paints, and wood preservation chemicals. Industrial formulators select this ingredient for its reliable activity against a broad spectrum of microbial contaminants, especially in applications requiring long-term control in harsh or submerged environments. In the paint industry, it helps prevent fouling on ship hulls and offshore structures, reducing maintenance intervals and material downtime. Other sectors relying on DCOIT include process water treatment, adhesives, and construction materials where microbial growth poses operational risks.
Inside our manufacturing units, we structure the workflow to safeguard reproducibility from batch to batch. Chemical engineers continuously monitor synthesis variables, and in-process controls follow strict criteria based on methodical QC routines. Analytical laboratories on site utilize HPLC and GC to confirm identity, purity, and absence of unwanted intermediates. By retaining direct oversight from synthesis through final packing, we hold traceability for every shipment dispatched to industrial accounts.
Packaging lines operate with materials engineered for chemical compatibility and safe handling by downstream users. Drums and intermediate bulk containers (IBCs) meet standardized UN criteria, supporting safe global transit and long-term storage at customer facilities. We arrange scalable shipment schedules, adapting to requirements from pilot programs to full commercial production campaigns without disruption. Inventory strategies prioritize minimal wait times between order and delivery, supporting continuous operation for manufacturers and multinational supply chains.
Our technical teams work directly with industrial procurement specialists, laboratory chemists, and process engineers to resolve formulation or application challenges. Support ranges from compatibility testing to application troubleshooting and regulatory compliance documentation. Over years, this practice has driven improvements in batch scale-up, wastewater treatment compatibility, and optimization of DCOIT loading in complex systems like resin emulsions or composite panels. We align product information and advice to the realities faced on the production floor, aiming to reduce process variation and enhance downstream outcomes.
Direct manufacturing control gives our customers a measurable advantage: stable supply backed by documented specifications, agile response to market demand shifts, and predictable quality supporting regulatory or commercial audits. Procurement and operations teams appreciate dealing directly with the producing facility, cutting lead times and eliminating ambiguity over origin, technical credentials, or packaging practices. This structure reduces inventory risk, simplifies logistics, and streamlines decision-making across the supply chain.
By controlling every phase of DCOIT production and supply, we give our industrial partners the consistency, transparency, and technical expertise they require to keep their own processes moving and their products performing in the field. We stand behind the materials we ship, and our customers recognize the difference direct manufacturing makes—batch after batch.
Producing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One involves handling a sensitive biocidal compound. Direct feedback from our engineering, R&D, and logistics teams shapes our approach to product stewardship. Experience tells us the material maintains optimum stability under practical, well-managed conditions—highly relevant to anyone using, storing, or transferring this substance at scale.
We manufacture this compound under controlled environments, so we see firsthand that exposure to excessive heat, sunlight, or moisture degrades both purity and antimicrobial effectiveness. The recommended approach is to store the product in a cool, dry, and well-ventilated area, out of direct sunlight. Stainless steel or high-density polyethylene containers with tight-sealing lids work well. Ambient temperature below 30°C keeps decomposition at bay. Once the original packaging is opened, it should be resealed tightly after each use; this reduces the risk of hydrolysis from humidity or accidental cross-contact with incompatible materials.
Long-term storage experience shows that refrigeration is not required, but avoiding temperature extremes (below freezing or above 40°C) prevents crystallization and discoloration. In our own operation, we rotate stock to keep inventory fresh, ensuring material going to customers meets stated assay and appearance criteria. Fire protection systems are organized around local regulations and industry guidelines, given the low—but not negligible—flammability risk in large quantities.
In our production systems, we have learned that isothiazolinones react negatively to some metals and reducing agents. Copper, iron, and mild steel accelerate decomposition, so we avoid all direct contact between the compound and those metals. Stainless steel (316 grade) or HDPE piping and valves offer proven compatibility and minimize risk of contamination. The product's biocidal function can also be deactivated by strong oxidants, amines, and some surfactants. Alkalis decompose the active structure quickly, so any formulation work involving pH adjustment needs careful buffering. We routinely perform compatibility tests against new formulating agents in our lab before any plant-scale blending runs.
Our experience with bulk blending and downstream packaging confirms the product remains stable and active in cationic and most nonionic systems, provided there's no prolonged exposure to strong bases or high concentrations of free halogens. We advise against blending it with reducing agents such as sodium sulfite or thiosulfate to preserve antimicrobial efficacy and shelf life.
Practical steps help ensure trouble-free storage and handling. We label all drums and IBCs with clear hazard symbols, batch numbers, and expiry dates. Our shipping department only releases freshly packed, inspected lots to maintain consistent quality on arrival. Spill kits, chemical-resistant gloves, splash goggles, and appropriate ventilation systems stand ready in our storage and bulk-transfer areas. Our technical team provides on-site training and documentation for safe handling upon request.
With over a decade manufacturing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One, our protocols reflect the realities of hands-on experience rather than theoretical guidelines. Robust processes mean safer workplaces and reliable product performance for our customers. For details tailored to specific processing needs—including custom compatibility questions or storage advice—we provide technical support directly from our QA laboratory and plant operations staff.
As the manufacturer of 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One, our focus stays fixed on delivering consistency, traceability, and reliability to customers who depend on industrial-grade preservatives. Over the years, the evolution of packaging for this compound has followed two clear needs — ease of handling and safe logistics, especially with tight controls on hazardous materials.
For many years, our standard packaging solution for 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One has been the 25 kg or 50 kg HDPE drum. These sizes reflect a balance between cost-effective transport, manageable palletization, and sufficient volume for industrial users in coatings, adhesives, and water treatment. Our technical team always considers factors like product stability, risk of contamination, and operator safety in every drum or IBC that leaves our site.
Bulk consumers with continuous blending lines or larger batch processes often require 200 kg drums or 1000 kg IBCs. We offer these options out of necessity, not marketing — frequent repacking of hazardous substances raises risks for operators and introduces unnecessary product handling. With bulk containers, we see far fewer customer complaints related to leakage or product degradation.
Moving a specialty biocide with complex logistics and storage rules demands careful scheduling and compliance. Our minimum order quantity for this product is one full drum, which represents either 25 kg or 50 kg net weight depending on the configuration. This minimum exists for two reasons: every drum must be batch-certified and traceable, and shipping partial drums directly from the production line would undermine both product quality and regulatory compliance.
For larger customers or distributors with regional warehouses, we regularly support full pallet lots (often around 16-20 drums, depending on weight and local transport rules) or full-container shipments of IBCs. These shipment sizes keep costs down, reduce the environmental impact from freight, and help ensure the material reaches the application sites with the performance profile unchanged from the day we filled it.
We receive a steady stream of requests for custom packaging solutions. Some markets push for smaller packs, like 5 kg or 10 kg containers, for pilot projects or R&D work. We discuss these requests on a case-by-case basis. The main challenge lies in maintaining quality during transport and storage — the smaller the container, the higher the relative risk of exposure to moisture or accidental opening. Before offering non-standard sizes, our production team evaluates filling processes, seal integrity, and necessary documentation for each variant.
While minimum order quantities may seem inflexible, our experience tells us that these limits reflect real-world safety, compliance, and cost factors. Beyond batch size, labeling and documentation must suit UN transport regulation and target country imports. Fragmenting larger drums into many small packs introduces regulatory headaches without clear customer benefit. That's why our technical and sales teams collaborate on any non-standard requests, weighing practicality against regulatory and quality demands.
Our packaging and ordering guidelines stem from decades of direct manufacturing experience. Every adjustment we consider comes with thorough testing, not only in the lab but also in our shipping process. If your application calls for a unique pack size, our process starts with an analysis by our technical staff, who ensure the container preserves product quality all the way from our site to your application.
We believe in open dialogue about the realities, not just the options, in moving specialty chemicals worldwide. Our solutions always connect back to safe use, regulatory alignment, and transparent communication — backed by our own boots on the factory floor.
In our facility, we synthesize 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One in batches modeled for high standards of purity, consistency, and compliance. Global shipping requires more than a robust product: it demands a detailed understanding of every regulation, from initial synthesis through to pallet delivery. Chemical control laws evolve, and regulations are increasingly synchronized across regions. We track these changes closely, embedding routine updates in our labeling, packaging, and documentation.
For shipments entering or moving within the European Union, REACH (Registration, Evaluation, Authorization, and Restriction of Chemicals) forms a strict compliance baseline. We handle REACH registration internally, using dedicated regulatory staff to maintain valid dossiers for 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One. Our assessment considers the latest scientific literature and toxicological test data for the active ingredient, as well as process-specific impurities that may arise during synthesis. Consistent recordkeeping supports auditable traceability, which European authorities require in the event of a compliance check.
Precise volume tracking and supply chain documentation come into play each year. We retain full copies of Safety Data Sheets (SDS), customer notification records, and updates on use categories. For downstream industrial users, our REACH registration maintains the legal certainty necessary to support repeat purchasing in the EU, especially for formulations crossing sector boundaries. No third-party registration chains stand between our product and the customer.
Moving dangerous goods safely involves investing in Globally Harmonized System (GHS) compliance. GHS provides a worldwide foundation for hazard communication, including pictograms, risk phrases, and precautionary statements. Our labeling team adapts GHS standards not only to the requirements of Europe, but also the United States (OSHA HazCom 2012) and Asia-Pacific (Japan’s ISHL, South Korea’s OSHA), reflecting the needs of direct, multinational buyers.
The industrial-grade isothiazolinones we produce carry GHS signal words, hazard and precautionary statements, and clear pictograms on all outer and inner packaging. These highlight acute toxicity and environmental hazards, which are intrinsic to isothiazolinone biocides. Handling precautions—such as recommended personal protective equipment and spill response measures—feature in every shipment. Prior to launch, our in-house compliance officers verify label accuracy against the latest official lists and hazard classifications.
Direct-from-factory supply means we control every aspect of packaging and documentation throughout the production and export process. Our technical team continually tests compatibility between the isothiazolinone and the container. Standard packaging uses UN-specification drums, which support compliance with ADR, IMDG, and IATA chemical shipping standards. Each unit carries a durable label and the paperwork required for international transit checkpoints.
Regulatory harmonization doesn’t make compliance automatic—each year, new guidance or divergent updates surface. Factory-direct engagement allows us to rapidly integrate new hazard codes or labelling language, so nothing is out-of-date or ambiguous. If customers seek more specific compliance evidence for a particular destination, our regulatory group provides detailed compliance documentation on request, backed by our laboratory’s data and full product traceability through the batch lifecycle.
In the environment that industrial chemicals navigate today, a direct, well-regulated supply chain is critical. We invest in compliance not just as a legal necessity, but as a safeguard for shared business continuity. Our ongoing goal remains transparent data flow, straightforward hazard identification, and hands-on support for compliant shipping worldwide. Nothing leaves our factory without a final review against the current statutes—so regulatory assurance is a built-in feature, not an afterthought, of every batch of 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One we export.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales3@ascent-chem.com, +8615365186327 or WhatsApp: +8615365186327
