| Names | |
|---|---|
| Preferred IUPAC name | 2-octyl-4-isothiazolin-3-one |
| Pronunciation | /tuː ɛn ɒk.tɪl fɔːr aɪ.səʊ.θaɪ.əˈzəʊ.lɪn θriː oʊ aɪ tiː/ |
| Identifiers | |
| CAS Number | N |
| 3D model (JSmol) | `3D model (JSmol)` string for **2-N-Octyl-4-Isothiazolin-3-One (OIT)**: ``` CCCCCCCCNC1=CSC(=O)N1 ``` |
| Beilstein Reference | 34401 |
| ChEBI | CHEBI:81967 |
| ChEMBL | CHEMBL56334 |
| ChemSpider | 21168293 |
| DrugBank | DB14070 |
| ECHA InfoCard | 03d6a8b1-4494-4712-a922-2aec5c5a3907 |
| EC Number | 247-761-7 |
| Gmelin Reference | 85037 |
| KEGG | C18639 |
| MeSH | D000077637 |
| PubChem CID | 5311467 |
| RTECS number | RG2280000 |
| UNII | 4W15F2I9DF |
| UN number | UN3082 |
| Properties | |
| Chemical formula | C11H19NOS |
| Molar mass | 241.39 g/mol |
| Appearance | Light yellow transparent liquid |
| Odor | Characteristic odor |
| Density | 1.02 g/cm³ |
| Solubility in water | Slightly soluble |
| log P | 2.9 |
| Vapor pressure | 0.00072 mmHg at 25°C |
| Acidity (pKa) | pKa = 3.5 |
| Basicity (pKb) | pKb = 4.75 |
| Refractive index (nD) | 1.052 |
| Viscosity | 13.71 mPa·s |
| Dipole moment | 3.61 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 576.8 J/mol·K |
| Std enthalpy of formation (ΔfH⦵298) | -362.7 kJ/mol |
| Pharmacology | |
| ATC code | D08AJ17 |
| Hazards | |
| GHS labelling | GHS07, GHS05, GHS09 |
| Pictograms | GHS05, GHS07, GHS09 |
| Signal word | Warning |
| Hazard statements | H301, H311, H314, H317, H331, H400, H410 |
| Precautionary statements | P261, P273, P280, P302+P352, P305+P351+P338, P310, P333+P313 |
| NFPA 704 (fire diamond) | 2-2-0 |
| Flash point | >100°C |
| Autoignition temperature | 170°C |
| Lethal dose or concentration | LD50 (oral, rat): 550 mg/kg |
| LD50 (median dose) | 550 mg/kg (rat, oral) |
| NIOSH | Not Listed |
| PEL (Permissible) | PEL: Not established |
| REL (Recommended) | 0.1% |
| IDLH (Immediate danger) | Not established |
| Related compounds | |
| Related compounds | 1,2-Benzisothiazolin-3-one (BIT) 2-Methyl-4-isothiazolin-3-one (MIT) 5-Chloro-2-methyl-4-isothiazolin-3-one (CMIT) 2-Butyl-4-isothiazolin-3-one (BBIT) 4,5-Dichloro-2-octyl-4-isothiazolin-3-one (DCOIT) |
| Product Identification | |
|---|---|
| Product Name | 2-N-Octyl-4-Isothiazolin-3-One |
| IUPAC Name | 2-octyl-4-isothiazolin-3-one |
| Chemical Formula | C11H19NOS |
| CAS Number | 26530-20-1 |
| Synonyms & Trade Names | OIT; Octylisothiazolinone; Kathon 893; Bioban OIT; N-octyl-2H-isothiazol-3-one |
| HS Code & Customs Classification | 2934999099 (typical for organic compounds containing a nitrogen heterocycle; exact classification may depend on regional customs requirements) |
In actual manufacturing, 2-N-Octyl-4-Isothiazolin-3-One is synthesized through a cyclization reaction involving octylamine derivatives and sulfur-containing intermediates. Raw material selection focuses on purity and trace metal content since impurities in primary alkylamines or sulfur sources tend to carry over into the finished product. Each process route may produce slightly different impurity profiles. Production follows batch or semi-batch operation depending on plant scale and final application segment, especially when formulating for industrial coatings, adhesives, plastics, or construction chemicals.
Quality control targets consistent assay values while constraining known trace isothiazolinone side-products, which can vary based on the reaction pathway and equipment used. Manufacturers develop purification routines—often involving aqueous or organic extraction—to strip residual starting amines and isolate the target isothiazolinone ring. Filtration and phase separation efficacy directly impacts stability and shelf life downstream.
Batch traceability remains critical since downstream formulators may require confirmation of synthesis batch, impurity release data, and specification ranges, all of which depend on end-use application and regional legislation. Customers specifying use in water-treatment, wood preservation, or coatings typically require product grades with defined color, odor, and residual solvent profiles. Release standards can include both in-house analytical data and customer-specific third-party validation, particularly for export or regulatory compliance.
Handling and storage require technical attention: OIT’s isothiazolinone structure is sensitive to prolonged exposure to high temperatures and UV light. Some grades include stabilizers to improve shelf life, which is application-sensitive and discussed with customers during order finalization.
Downstream formulation will see behavior changes if residual moisture or non-target organic compounds exceed internal release thresholds. These technical limitations are documented through retained batch samples and periodic reanalysis. Manufacturers share these insights directly with technical and formulation teams, ensuring the end user understands how production choices affect their final system performance.
In plant practice, OIT appears as a clear to slightly yellowish liquid at ambient temperatures, sometimes with a faint characteristic odor typical of isothiazolinones. Form, color, and odor reflect the employed synthesis route and raw material purity. Finished goods may exhibit slight haze if water content increases or during early crystallization at lower temperatures, which flag issues with process water management and temperature control.
OIT’s melting and boiling points vary depending on grade and trace impurity content. Technical and industrial grades generally remain liquid across normal shipping and storage ranges. Density values correlate closely to temperature and residual solvent carryover. Precise figures should be confirmed per batch and are relevant for inventory and blending operations.
OIT’s long-term stability depends on light exposure, air contact, and presence of adventitious metal ions. The molecule retains reasonable shelf life under controlled storage but can degrade from prolonged contact with strong oxidants or UV light. Oxygen ingress can promote peroxide formation or discoloration, especially if antioxidants are not dosed correctly during packaging. Process engineers monitor color and peroxide index to assess reactivity during storage.
Solubility in water is low at ambient temperature, so blending requires pre-mixing with an appropriate co-solvent. In plant operations, glycol ethers, alcohols, or surfactants are chosen to ensure homogeneous dispersions. Overshooting solubility thresholds causes clouding, which is particularly problematic for formulation in paints or emulsions. Process technicians control solvent ratios and mixing sequence to minimize localized high concentrations, which can induce decomposition or gel formation.
Specification values such as purity, water content, and active concentration depend on intended application—whether for industrial preservatives, coatings, or water treatment formulations. Technical grade often features slightly higher allowable water content, while high-purity grades for sensitive applications demand lower threshold for organosulfur byproducts.
Impurities result from raw material feedstock variability and synthesis environment, commonly including minor isothiazolinone analogues and unreacted precursors. Analysts routinely track these by HPLC and GC, applying limits tuned to customer application and region-specific regulatory requirements. Major source of out-of-spec material is incomplete purification, which increases biocidal byproduct risk in end formulations.
Technical teams define test regimes based on product grade and customer documentation, with methods such as HPLC for purity, Karl Fischer titration for water, and colorimetric assays for active isothiazolinone. Results are trended against internal historical data, and non-conforming batches are held for risk assessment or reprocessing.
Raw octylamine, sulfur, and specialty chlorinating agents form the backbone of OIT synthesis. Sourcing focuses on minimal amine impurities to reduce off-odor and improve end product stability. Selection criteria involve upstream certification of halide and amine content; fluctuations in supplier quality require closer incoming quality control.
Manufacturers direct chlorination or oxidative cyclization of N-octylthiourea under controlled temperature, catalyst, and solvent. Route selection aims at minimizing formation of side-chain chlorinated impurities and optimizing conversion efficiency. Reaction exotherm management and sequential reagent dosing are key for suppressing polymeric byproducts and maximizing selectivity.
Process engineers set control windows for temperature, pH, and reagent feed rates to prevent runaway side reactions. Product stream passes through phase separation and solvent extraction to remove water-soluble and high-boiling point impurities. Final purification uses thin-film distillation or activated carbon filtration, both chosen per batch impurity load. Rework or recycling is implemented if batch fails to pass pre-defined purity cutoffs.
QC labs use validated chromatographic and spectrometric methods for batch certification. Specification depends heavily on customer and regulatory framework—batches destined for biocidal use may require tighter residual solvent and color indices than industrial use. Batch-to-batch reproducibility is controlled by stepwise documentation, in-process monitoring, and retention sample analysis.
OIT gives robust antimicrobial properties through covalent modification of microbial enzymes. In formulation labs, it may react with strong acids, reducing agents, and nucleophiles, usually accompanied by loss of stability or precipitation, especially in alkali solutions.
Modification and downstream functionalization often require controlled low temperatures and inert atmospheres to avoid unwanted ring-opening or decomposition. Process chemists occasionally introduce protective groups or select mild catalysts, depending on the end application’s chemical compatibility needs.
Chemists synthesize related isothiazolinones or functionalized derivatives for specialized microbicidal or performance coating systems. Downstream processing includes granulation for dry blending, or microencapsulation for slow release; process parameters depend on client request or regulatory compliance.
OIT integrity depends on storage temperature below 30°C and humidity control. Light-blocking drums or IBCs significantly prolong shelf life by avoiding UV-induced breakdown. Nitrogen blanketing may be applied by larger manufacturers to further suppress oxidative degradation in high-purity grades. Inadequate sealing or exposure to air causes yellowing, off-odor, and lowered assay.
Engineers specify HDPE or fluorinated containers for most applications. Rubber linings are avoided since OIT attacks certain elastomers over time, raising risk of vessel leaching and content contamination.
Shelf life depends on grade, packaging, and upstream process consistency. Manufacturers set expiry based on retention sample re-assay and trend analysis, commonly watching for color shift, off-odor, and reduced actives as early warning signs of batch breakdown.
GHS classification relies on batch-specific hazard assessments. OIT acts as a skin and eye irritant, with potential for sensitization in repeat exposure scenarios. Hazard communication on drums follows current regulatory labeling by receiving region.
Plant operations train staff for strict skin and respiratory protection. Direct contact and inhalation during charging and blending are key sources of incident reports, usually during open drum transfers or agitator maintenance. Engineering controls and PPE choice reflect batch scale, containment methods, and plant layout.
Acute and chronic toxicity relates to concentration and route. Operators follow standard industrial hygiene practices; process containment, local exhaust ventilation, and periodic workplace air monitoring are typical. Exposure limits follow regional occupational health rules and undergo periodic review as manufacturing experience accumulates and regulatory consensus evolves. Spill cleanup teams follow defined protocols for neutralization and disposal in case of leaks.
OIT production capacity largely reflects the installed reactor tonnage and purification throughput of a dedicated line, not just nominal batch size. Annual plant output is determined by upstream raw material supply stability, process uptime, and the stringency of purification steps. Production lines maintained for fungicide-grade OIT experience operational constraints: bottlenecks in high-purity distillation, frequent system cleaning to prevent cross-contamination, and batch consistency monitoring all play a role. Supply availability fluctuates with customer schedule aggregation, planned maintenance windows, and unexpected demand spikes from downstream coatings, leather, or polymer sectors.
Lead times for bulk OIT grades range from prompt dispatch for ongoing call-off contracts to several weeks for new pipeline orders involving batch qualification or third-party audit. Minimum order quantity varies considerably according to grade and packing; large industrial users align MOQs with ISO tank or 200L drum logistics, while specialty use usually calls for smaller, possibly UN-certified packaging with a higher price per unit.
Standard packing formats include high-density polyethylene drums, intermediate bulk containers (IBCs), and, for high-throughput processors, dedicated tank trucks. For markets with tough regulatory scrutiny, only packing certified under local ADR/IMDG or DG compliance enters the distribution chain. Compatibility with the biocide's chemical resistance profile and customer decanting systems determines the selected packaging.
Shipping terms follow Incoterms—FOB, CFR, or DDP—depending on destination and buyer preference. For regulated chemicals like OIT, carriers with hazardous goods licenses must be used. Payment structures adapt to credit checks and buyer relationship, from L/C at sight for new business to post-shipment net terms for repeat customers with strong fulfillment records.
OIT cost structure stems from the pricing of key raw materials: octylamine and isothiazolinone precursors. Volatility in upstream feedstock pricing—often oil or petrochemical linked—directly impacts finished product cost. Any supply-side hiccup in the chemical chain (refinery outages, geopolitical supply restrictions, or logistics disruptions) translates to price pressure on OIT.
The share of energy, solvent, and purification costs rises for high-assay grades or those destined for strict end-use applications. Water, wastewater, and emissions compliance also contribute, varying widely depending on the region of manufacture and compliance investment.
OIT pricing stratifies by purity requirement, batch traceability, and packaging. Technical grades—where downstream impurities pose less risk—retain a sizable price discount versus high-purity or ultra-low-impurity versions intended for sensitive polymer or coating formulations. Certified packing and required CoA/third-party lab testing blend further into total cost, especially for EU or US-bound shipments demanding REACH, BPR, or EPA documentation.
Market demand for OIT or related isothiazolinones is shaped by biocidal regulations, weather-affected application upticks (in coatings and water treatment), and ongoing substitution dynamics as formulators manage regulatory lists. Key producing and consuming economies—China, the US, the EU, Japan, and India—show regionally distinct consumption profiles tied to market size, end-use segment, and regulatory acceptance.
China has become both the main source of base-grade OIT and a substantial consumer in domestic plastics and coatings. EU and US markets prioritize regulatory-compliant batches with full documentation, while local production focuses more on value-added end-user adaptations. Japan’s market seeks precision-grade and low-residue materials. In India, local formulators often balance cost with minimum compliance, focusing on growth in construction chemicals and industrial coatings.
Forecasting out to 2026, OIT prices face mild upwards pressure in regulatory-driven markets that require tighter impurity control and approval schemes. Feedstock trends, refinery sector volatility, and shifting environmental rules around isothiazolinones will impact the price floor. Markets prioritizing in-depth compliance see a widening premium versus general-purpose grades. Economic recovery in construction and coatings, coupled with regulatory recalibrations, may cause regional divergence in both demand and allowable specifications.
The analysis draws from multi-year procurement cycle trends, reported production statistics, major international chemical conference reports, and direct feedback from compliance audits and customer technical requests. Internal quality review data supports commentary on grade differences and supply bottlenecks.
Recent years have seen EU and US regulators tighten hazard communication and assessment of isothiazolinones, OIT included, focusing on safe concentration limits in treated articles and end-use product labelling. International biocide approval cycles now include increased scrutiny of impurities and byproduct profiles, raising control requirements upstream.
Compliance with global frameworks—such as REACH, EU BPR, US EPA TSCA—sets process documentation and regulatory dossier demands for batches intended for regulated markets. Pre-registration and supply chain documentation take up a larger share of product cost and response planning, especially as permitted impurity thresholds narrow with each regulatory review cycle.
Manufacturing has adapted to comply with updated audit trails, impurity profiling, and downstream traceability. Investment focuses on incremental process analytics, improved solvent recovery, and digital QA tracking. As regulatory requirements evolve, customer technical support teams address formulation adjustment requests and adapt documentation processes, mitigating risk of shipment holds or market entry barriers due to shifting compliance targets.
2-N-Octyl-4-Isothiazolin-3-One (OIT) serves as a biocidal active used in multiple industrial settings. Coatings manufacturers regularly include OIT for paint preservation and film protection. In adhesives and sealants, OIT interrupts microbial growth during both storage and end use. Leather industries use OIT to prevent mold and bacterial degradation during wet processing and after tanning. Some plastic manufacturers incorporate OIT in flexible PVC and polyurethane to counter microbial attack throughout product life.
| Application | Recommended Grade | Rationale and Special Considerations |
|---|---|---|
| Architectural Paints | High Purity Technical | Water-borne systems typically require stricter purity control to avoid instability, discoloration, and influence on film properties. Release standards consider VOC limits and compatibility with key resin binders. |
| Leather Processing | Technical | Impurity profile must avoid residues that could affect dyeing, finishing, or cause staining. Sourcing of raw materials with low sulfur content receives priority. Batch traceability is required for audits. |
| Adhesives & Sealants | Standard Technical | Thixotropic products need free-flowing grades with demonstrated dispersibility. Quality checks focus on color, odor, and miscibility in formulation solvents. |
| Plastic Compounds | Low-Residue Grade | Thermally stable grades reduce risk of yellowing during extrusion, especially for flexible film and molded articles. Ash content and residual isothiazolinones must be controlled for product safety compliance. |
Clarify the process environment and end use. Surface coatings typically prioritize color and durability, plastics call for thermal stability, and adhesives rely on compatibility with polymer backbones.
Assess all biocide approvals, VOC limits, and consumer safety rules in each target market. OIT content and impurity profiles sometimes require adjustment for different geographies or registrations.
Determine acceptable impurity levels according to sensitivity of the downstream formulation. Water-dispersed paints and high-end plastics most often demand higher purity. If impurity tolerances are not met, production defects and increased yellowing can occur.
Match the selected grade to consumption volume and price constraints. Bulk buyers may request custom tonnage lots or in-line purity adjustments to improve yield and reduce cost per unit.
Laboratory or pilot-scale testing offers the only practical method to confirm grade suitability under actual process conditions. Variability in compatibility or preservation effect often appears only after several weeks’ real world exposure.
The production of 2-N-Octyl-4-Isothiazolin-3-One starts with a process built around recognized quality management systems, commonly certified under internationally accepted frameworks. Facilities are regularly audited by independent third parties. Site-level systems cover critical stages, including raw material qualification, in-process monitoring, batch coding, and lot traceability. Consistency is managed through statistical control of key parameters such as reaction temperature, pH, and analytical purity, as guided by certification protocols. Regulatory authorities often stipulate adherence to these systems to ensure product identity and minimize variability for downstream processors.
Certification scope typically depends on the OIT application. For applications in paints, adhesives, cooling water, or other preservation systems, compliance with regional biocide regulations and environmental directives is fundamental. Documentation may include REACH notifications for supply to European customers alongside region-specific registrations required by local authorities. Grade distinctions reflect controls on specific impurities and microbiological limits; technical-grade OIT has specifications distinct from higher-purity grades developed for sensitive downstream uses. Certification files are updated when regulatory status or specification standards are revised.
Standard shipment documentation features a certificate of analysis (COA) for each lot, referencing customer-agreed specification points such as assay range, color, and selected impurities, as determined by validated in-house methods. Material safety data sheets cover chemical identity, recommended handling, and compliance references. Upon request, manufacturing teams prepare batch records, impurity trend summaries, and process change notifications to support customer compliance audits. Test reports reference validated procedures; where customers require additional documentation, technical staff can align reporting formats with specific enforcement or industry standards.
Manufacturing scale-up for OIT follows demand forecasts and seasonal outlooks in key use sectors. Core reactors and downstream purification units operate with buffer capacity, supporting both large-volume schedule contracts and smaller customized batch requirements. Any changes in installed capacity, raw material sourcing strategies, or logistics plans are communicated directly to partner procurement teams. For customers with variable demand profiles, supply contracts can be tailored for planned monthly draw-downs or just-in-time shipment options.
Primary OIT production lines rely on qualified feedstocks, in-line monitoring, and redundancy in critical process units to minimize disruption from planned maintenance or upstream raw material issues. Batch-to-batch tracking is maintained to reduce supply risk for customers running continuous or high-throughput operations. For key accounts, batch reservation and forward allocation are possible, with periodic reviews on capacity planning to address unique market shifts or regulatory impacts.
Sample requests are managed directly by the technical support department, reflecting typical customer use scenarios and specification requirements. For standard grades, samples are pulled from statistically representative batches, with analytical data provided for traceability. For customized grades or pre-commercial developments, pilot batch samples undergo additional reviews and documented verification testing. Sample quantities are determined by downstream qualification needs; post-shipment feedback is used to further refine lot release parameters or adjust production methodology.
Business models range from fixed-term bulk contracting for established industrial users to cooperative development agreements where specification tailoring and ongoing process adjustment play a central role. Flexibility extends to consignment stock, delayed shipment, or third-party logistics in regulated regions. Quality and sales teams partner with customers to adapt delivery frequency, lot size, and release protocols for seasonal, project-based, or regulatory-driven requirements. For high-purity or application-critical needs, tighter release controls are applied, and periodic technical review meetings are standard practice to ensure mutual understanding of production realities as customer requirements evolve.
In-house research continues to concentrate on optimizing the synthesis routes for 2-N-Octyl-4-Isothiazolin-3-One. Raw material selection remains anchored on feedstock purity and reproducibility, reducing downstream impurity loads. There is a strong internal focus on narrow-range by-product control and upgrading refining strategies to enhance batch consistency. Within technical labs, new application-driven testing protocols for OIT span microbial efficacy against resistant strains, referencing both in-house and collaborative external data where regulatory regimes permit.
Formulators frequently request input on compatibility issues with latex emulsions, water-based acrylics, as well as industrial coatings and plastics, supporting a pattern where technical assistance is tailored toward product-specific end uses. Industrial feedback indicates rising demand for OIT grades with controlled volatility for high-temperature and humid climate demands, leading to collaborative development work with multinational coatings manufacturers.
Recent project pipelines involve demand from marine antifouling coatings and wood preservation, where OIT’s antimicrobial profile supports resistance to a broader spectrum of environmental degradation. Smart release coatings and biobarrier systems are emerging as performance benchmarks, requiring continual adjustment to particle dispersion protocols and examination of leach resistance over extended service intervals. In polymer masterbatch and plasticized film production, technical support teams address matrix integration and migration behavior, which directly affect both product lifespan and compliance with evolving standards.
From a production standpoint, the main technical challenge centers on minimizing by-product formation during cyclization and oxidation steps. Factors affecting moisture uptake, off-odor generation, and yellowing in finished formulations continue to guide both process control and targeted impurity reduction. Where product batch consistency hinges on these critical parameters, real-time analytics and feedstock sequencing play a larger role. Process engineers are actively refining in-line measurement tools to detect and control impurity profiles before final packaging.
Recent internal breakthroughs include modular process design for faster grade switching, which reduces cross-contamination risks and accelerates bespoke batch production in response to customer orders.
OIT demand trajectories indicate stable growth in industrial coatings and functional plastics, with particular emphasis on Asia-Pacific and Latin America, driven by increased infrastructure activity and regulatory tightening on alternative biocides. Feedback from key markets demonstrates a trend for higher purity, narrower specification grades, often triggered by region-specific guidelines on environmental emissions or worker exposure.
While legacy applications in paints and marine coatings show relatively mature uptake, expanding downstream utility in adhesives, sealants, and engineered woods suggests incremental market share growth. Supply chain partners indicate procurement preferences for direct sourcing from primary producers, particularly when long-term forecasting and batch traceability are required by global brands.
Across manufacturing lines, continuous investments are underway in automated dosing, real-time impurity monitoring, and closed-system transfer protocols to reduce operator exposure and improve quality stability. There is movement toward reactor design that shortens batch cycle time with tighter impurity management, allowing for faster response to application-specific grade requests.
Technical teams monitor alternative synthetic pathways as a hedge against potential raw material fluctuations and regulatory phase-outs. Emphasis falls on routes that cut down hazardous intermediates or volatile by-products.
Long-term projects focus on solvent management and energy reduction, leveraging solvent recycling, and improved catalyst systems where feasible. Process improvements target lower total organic emissions and minimize aqueous effluent loads at both pilot and full-scale plants. On the R&D side, the evaluation of biobased feedstocks and greener oxidants is ongoing, weighed closely against process robustness and batch-to-batch reproducibility.
Sustainability reporting now incorporates cradle-to-gate assessments and downstream engagement with responsible product stewardship modules, particularly when supply to regions under enhanced environmental scrutiny.
Support teams—backed by laboratory and production specialists—provide technical consultation for both new formulation projects and troubleshooting existing application lines. Guidance covers optimal incorporation methods, solubility parameters, and anticipated compatibility issues with modern low-VOC systems. These consultations draw on practical experience across different plant configurations and end-use environments.
Direct application optimization includes real-world testing in partnership with customer pilot lines where possible, leveraging internal QA data and cross-validating with downstream process constraints. Adjustments accommodate grade sensitivities, including viscosity, active content, and purity requirements that align with each customer’s unique formulation needs.
Commitment to after-sales support extends from field visits for application troubleshooting to detailed investigation of off-spec batches, leveraging batch-level traceability and retained sample archives. In the event of customer-driven specification changes, collaborative review panels convene joint investigations to identify root causes and actionable solutions, feeding lessons learned directly back into process controls and QC release standards.
Final release standards adjust according to internal criteria and application-driven metrics, ensuring shipped product aligns with technical data packages and end-user regulatory obligations. Ongoing feedback loops with major customers remain central to continuous improvement programs both at plant and R&D level.
Industrial buyers know the critical role that 2-N-Octyl-4-Isothiazolin-3-One plays in safeguarding a wide range of applications. Direct manufacturing of OIT allows us to offer continuous assurance on quality, supply reliability, and ongoing technical engagement with customers operating in demanding markets.
Long-term production of OIT has meant refining our process control, from initial synthesis through to final refining. Attention to raw material purity, reaction parameters, and purification steps anchors every batch. Inline monitoring tools and batch analytics verify that each lot meets its intended specification, batch after batch. By engaging at every manufacturing stage, we protect downstream users from typical lot variation that can disrupt preservation, coatings, and material protection systems.
OIT commonly serves as an active in metalworking fluids, adhesives, coatings, plastics, and leather treatments. Users in these fields require robust antifungal and antibacterial performance across long storage and variable field conditions. Performance stability stems directly from precise molecular content and consistency in physical properties, supported by controlled particle size management and compatible solvent bases. Adjustments to meet large volume industrial formulations are handled in our own process lines, where we oversee everything from the initial charge through filtration and packaging.
Reliability starts in the lab before reaching the production floor. Active ingredient content undergoes validated analysis before packaging. Every batch gets tested for impurities, moisture, and compatibility with relevant matrices. Stringent routines, including real-time process sampling, allow rapid intervention should out-of-range results appear. These controls remove the uncertainty often associated with offsite or resold technical products.
Bulk orders require efficiency and practical packaging solutions. We offer OIT in industrial-compatible containers, enabling rapid transfer for downstream processing. Primary containment adheres to industry guidelines for chemical compatibility and safe storage, minimizing risk of product loss or cross-contamination during transport. In-house logistics teams coordinate shipments to ensure timely arrival at customer sites, integrating with their production timetables.
Clients gain from immediate access to chemists and process engineers familiar with both the synthesis and application of OIT. Troubleshooting formulation challenges or adapting OIT use to new regulations does not require a go-between. End-users and procurement specialists work directly with informed technical personnel who understand both the chemical structure and its practical performance in-field. Ongoing dialogue leads to rapid response and adaptive process adjustments as technical needs evolve.
Supply partnerships rooted in direct manufacturing grant commercial buyers improved traceability and accountability. Production scheduling, forecasting, and compliance alignment benefit from clear, direct communication. This approach keeps inventories in check and mitigates exposure to unplanned supply disruptions. Our manufacturing orientation translates to stable base pricing and proactive updates about formula changes, supply lead times, or regulatory shifts, benefiting enterprise procurement strategies and reducing uncertainty across the supply chain.
As a direct manufacturer of 2-N-Octyl-4-Isothiazolin-3-One, we have witnessed how this active ingredient shapes the microbial landscape in industrial water treatment. OIT’s performance is tightly linked to proper dosage and correct application, which our technical team continues to emphasize in daily plant operations and in direct customer support. Misdosing not only leads to inefficiencies but also impacts long-term system integrity and the safety expectations of plant operators.
We typically recommend applying OIT at concentrations that control microbial growth but keep chemical consumption practical. For fresh charges in recirculating cooling systems, target levels often range from 10 to 30 mg/L (active ingredient). Dosage in this range tends to suppress bacterial and algal growth effectively under ordinary operating conditions. In heavily fouled or contaminated systems, a short-term “shock” dose up to 50 mg/L may help restore microbiological control quickly. Our field teams report that maintaining a stable OIT concentration, rather than cycling between extremes, keeps biofilm under control and extends maintenance intervals for critical assets.
Our liquid OIT formulations disperse directly into system water for most users, using metering pumps connected to the main recirculating line or dosing points with continuous flow. We always recommend dosing into moving water to achieve rapid dispersion and prevent local overdosing, which could cause temporary odor or foaming if left stagnant. With experience, we found staggered or pulse dosing, programmed into a plant’s controller, balances biocide consumption with fluctuating microbial loads. In seasonal peaks—especially when temperature and organic load rise—operators often choose more frequent or higher dosing to hold microbial activity within the target range.
For open recirculating cooling towers, regular monitoring of microbial activity and OIT residuals helps maintain proper control. This feedback-driven approach, supported by on-site water analysis, gives plant operators an early warning of any trend that might require adjustment. Our team routinely helps customers set up simple test protocols that flag any deviations before fouling or corrosion set in.
OIT’s broad-spectrum performance comes with strict handling guidelines in our production facility. We designed our production lines to limit vapor exposure and minimize waste, and we encourage our downstream users to do the same. Only trained operators should handle concentrated OIT, always wearing gloves, goggles, and chemical-resistant clothing. Proper ventilation at the mixing and metering points is non-negotiable. Spills must be contained immediately and disposed according to local regulations on hazardous waste. Uncontrolled release into municipal drains creates environmental risks, so excess solution or rinse water should never be flushed untreated.
Ongoing feedback from field trials and plant audits shapes how we coach our customers to maximize biocide value while meeting safety requirements. Our technical support team works on site with maintenance crews, looking at the onsite challenges: variable water quality, changing temperatures, legacy fouling, or incompatible chemistries. Through hundreds of system evaluations, we continue to emphasize routine testing, operator training, and the importance of direct, reliable communications between supplier and end-user.
Every batch shipped from our facility passes strict quality controls, and our support does not end at delivery. We monitor outcomes together with our customers and supply guidance so operators can feel confident in both the science and the practice of OIT application. Drawing on years of hands-on experience, we aim to minimize surprises and maximize uptime for every industrial water treatment operation using our products.
As a direct manufacturer of Octylisothiazolinone (OIT), we often receive inquiries about available packaging sizes and realistic production lead times. These are not just details on an order sheet—they are significant factors that affect shipping safety, downstream processing, and project timelines for every customer. Our packaging team handles industrial OIT shipments daily, and we have developed options based on years of practical experience in the global chemical market.
Bulk OIT is usually handled as a liquid, so we choose packaging that protects against leaks, allows for easy integration on production lines, and matches export regulatory guidelines. Our standard items include 25 kg plastics drums, 200 kg high-density polyethylene drums, and 1000 kg intermediate bulk containers (IBCs) made from durable polymers with welded steel frames. Each drum or IBC includes tamper-evident seals and labeling aligned with international transport requirements.
For high-volume consumers—especially in paint, adhesives, or leather manufacturing—we understand handling efficiency matters. Our warehouse keeps an inventory of empty drums and IBCs to reduce prep times. Some customers have very high monthly requirements, and we have invested in semi-automated filling lines that help ensure packaging integrity, consistent fill volumes, and quick turnaround for large lots. If your facility uses a preferred bulk format, speak with our technical service team—we often develop custom packaging solutions for regional compliance or to match particular factory decant systems.
Lead times for OIT bulk orders depend on production batch scheduling, packaging preparation, shipping documentation, and—the factor we control most directly—raw material management. For standard 200 kg drums or 1000 kg IBCs, we keep unfilled and empty packaging on standby at the plant. In periods of normal demand, we commit to lead times ranging from 7 to 15 business days after order confirmation once payment terms clear and shipping instructions are final.
Order size matters. A single FCL (full container load) often ships faster than a consolidated LCL (less than container load), due to local port scheduling. Our primary concern is to keep DOP (days on production) low and avoid any interruption to our customers’ own manufacturing cycles. During peak seasons or when special packaging is requested, lead times can stretch by several business days. We always maintain open lines with dispatch and our freight partners to prevent surprises.
Direct manufacturing puts us in the driver’s seat compared with trading houses. Our batch records, packaging inventory, and logistics channels all flow from one site, which gives us visibility from raw material intake all the way to the final shipping seal. This control lowers the risk of packaging mix-ups, missed fill weights, or labeling delays. In the rare case that an unusual order volume or specification arises, our operations managers review the request in real time with production, warehouse, and shipping so that each department is aware and adjustments can be made to standard schedules.
Through ongoing investment in process automation and staff training, we stay nimble without sacrificing quality or safety. Ultimately, our job is to make sure customers know exactly how OIT will arrive, and when, so they can plan with confidence for their own production targets. If you require any specific compliance information or documentation alongside shipment, our in-house regulatory and technical staff can provide detailed materials.
OIT, or 2-octyl-2H-isothiazol-3-one, is a widely recognized biocide. We produce this chemical at scale, and direct responsibility for its safety, compliance, and shipping documentation falls squarely on our operations and technical teams. Regulations for OIT differ by country and even by region. We keep a close eye on every update, and adjust production, labeling, Safety Data Sheets (SDS), and packaging practices so every batch meets both current local standards and our customers' expectations.
Across Asia, Europe, and North America, agencies such as the EU's ECHA, the US EPA, and China's Ministry of Ecology and Environment institute regulations that govern substances such as OIT. Our teams review the regulatory status of OIT in every major region we ship to. For example, our OIT conforms with EU REACH registration requirements for substances placed on the European market. We provide our downstream users with fully compliant SDS in local languages, and our labeling reflects both hazard information and proper handling guidance demanded by law.
In several regions, OIT faces specific use restrictions, especially in consumer applications such as coatings or textiles. Our compliance unit tracks market-specific guidelines, and we restrict our OIT applications when mandated by local authorities. Product stewardship is a core responsibility from our end. We keep our hazard communication documents aligned with the latest GHS revisions adopted in each country.
Shipping OIT across borders brings its own set of requirements. As a manufacturer, we classify OIT based on the UN Globally Harmonized System. For international cargo, OIT falls within Class 6.1 (toxic substances) under the UN model regulations. Our logistics team prepares full DG (Dangerous Goods) documentation and affixes labels that comply with the International Maritime Dangerous Goods Code and IATA for air shipments. Every shipment includes a compliant, updated SDS and an IMO Dangerous Goods Declaration, which details technical name, hazard class, UN number, and packing group.
Customs clearance in export markets usually requires a Certificate of Analysis and, sometimes, proof of compliance for specific regulations, such as a REACH Certificate or an EPA statement, if applicable. We support every consignment with a product statement regarding active substance status under biocidal regulations. For shipments to high-regulation zones, we include extra documentation to meet customs and inspection requirements.
Shipping containers and drum packaging receive tamper-evident sealing. Batch records and tracking information travel with every consignment, ready for inspection if customs or downstream receivers request supporting data. We only release shipments that pass batch-specific QC and documentation controls.
Some of our industrial clients require formal declarations that our OIT does not include SVHC (Substances of Very High Concern) above threshold limits. We supply these letters straight from our compliance team, along with guidance on safe storage, transportation, and disposal per destination country requirements. Our regulatory affairs staff engage actively with customers about local laws that affect OIT import, storage, and use.
Our role as the direct manufacturer covers complete responsibility from production to delivery. We keep our documentation current, our hazard communication clear, and our regulatory tracking rigorous for every order of OIT. If a customer’s destination country introduces new controls or revised classifications, we adjust shipping practices and compliance paperwork immediately. This constant vigilance allows us to deliver OIT with full reliability and regulatory confidence, no matter the destination.
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
