• ✅ Guaranteed ultra-high purity: ≥99% minimum total active ingredient (actual 99.63%), ensures consistent antimicrobial performance
• ✅ Low moisture content: ≤1.0% maximum (actual 0.42%), prevents formulation instability and microbial growth
• ✅ Precise specific gravity: 1.00-1.05 @25℃ (actual 1.039), uniform physical properties for reliable dosing
• ✅ Controlled pH value: 3.0-7.0 (actual 4.18), compatible with most industrial formulations
• ✅ Excellent low temperature stability: Remains clear in DINP at -15℃ for two weeks, no crystallization or separation
• ✅ Broad spectrum antimicrobial activity: Effectively inhibits bacteria, fungi, yeast and mold growth
• ✅ Long-lasting protection: Provides extended preservation against microbial degradation
• ✅ Good compatibility: Compatible with most water-based and solvent-based formulations
• ✅ Low dosage requirement: Highly effective at low concentrations, reducing production cost
• ✅ Strict quality control: Batch-to-batch consistency guaranteed, suitable for large-scale industrial production

2-N-Octyl-4-Isothiazolin-3-One, commonly known as OIT, is a high-performance broad spectrum isothiazolinone biocide and preservative with CAS number 26530-20-1. Its molecular formula is C11H19NOS, with a molecular weight of 213.34 g/mol. Our industrial grade product appears as a clear, yellow ropy liquid or crystal, with strict control over purity, moisture, specific gravity and pH value.

As an effective industrial antimicrobial agent, OIT provides excellent protection against bacteria, fungi, yeast and mold growth in various industrial products. It is widely used as a preservative in water-based coatings, adhesives, sealants, leather products, textiles and other industrial formulations. Its unique chemical structure ensures long-lasting antimicrobial activity and good compatibility with most industrial systems.

Our OIT is produced with advanced synthesis and purification technology, with full batch traceability and complete supporting quality documents. We can provide customized specifications to meet specific customer requirements and ensure long-term stable bulk supply for global industrial manufacturers.

Appearance: Clear, yellow ropy liquid or crystal

Packaging: 25kg plastic drum; 200kg UN-approved steel drum; Customized packaging available upon request

Storage Conditions: Store in tightly sealed containers in a cool, dry and well-ventilated warehouse at 5-30℃; Keep away from heat sources, direct sunlight and strong oxidizing agents; Avoid contact with skin and eyes; 24-month shelf life under proper storage conditions

Transport Classification: 8 (Corrosive Liquid)

Packing Group: III

• OIT
• 2-Octyl-4-isothiazolin-3-one
• 2-n-Octyl-3-isothiazolone
• Octylisothiazolinone
• CAS 26530-20-1
• Industrial Biocide OIT
• Coating Preservative OIT
• Broad Spectrum Antimicrobial OIT

1. Coating Industry (Core Application): Used as preservative for water-based coatings, latex paints, emulsion paints and architectural coatings. Prevents microbial degradation, mold growth and spoilage during storage and use.
2. Adhesive & Sealant Industry: Applied as preservative for water-based adhesives, pressure-sensitive adhesives, latex adhesives and sealants. Protects against bacterial and fungal growth.
3. Leather Industry: Used as biocide in leather tanning, finishing and preservation processes. Prevents mold growth on leather products.
4. Textile Industry: Applied as antimicrobial agent for textiles, fabrics and non-woven materials. Provides long-lasting protection against bacteria and fungi.
5. Construction Industry: Used as preservative for concrete admixtures, grouts and cement products. Prevents microbial degradation and improves durability.
6. Other Industrial Fields: Employed in paper manufacturing, printing inks, cosmetics and personal care products as a preservative.

A1: The recommended dosage varies by application:

• Water-based coatings: 0.05-0.2% by weight
• Adhesives and sealants: 0.05-0.3% by weight
• Leather products: 0.1-0.5% by weight
• Textiles: 0.05-0.2% by weight
  The exact concentration depends on the specific formulation, environmental conditions and required level of protection.

A2: Yes, OIT is highly compatible with most common preservatives, biocides and industrial additives. It is often used in combination with other biocides such as MIT, BIT and CMIT/MIT to provide synergistic antimicrobial effects and broader spectrum protection.

A3: OIT is most effective in the pH range of 3.0-9.0. It remains stable and effective under normal industrial formulation conditions. However, it may degrade at pH values above 10.0 or below 2.0.

A4: OIT is a corrosive substance and may cause severe skin burns and eye damage. Required PPE includes:

• Chemical-resistant gloves (nitrile or butyl rubber)
• Safety goggles with face shield
• Chemical-resistant apron and protective clothing
• Respiratory protection if working in poorly ventilated areas

A5: In case of spill:

• Evacuate personnel to safe areas
• Wear appropriate PPE
• Contain the spill to prevent spread to drains and waterways
• Absorb with inert material such as sand or vermiculite
• Collect in suitable closed containers for disposal
• Wash the area thoroughly with plenty of water
• Do not allow product to enter the environment

A6: OIT has a shelf life of 24 months when stored in tightly sealed original containers under proper storage conditions. It should be protected from heat, direct sunlight and moisture to maintain its antimicrobial activity.