Description

2-n-Octyl-3(2H)-Isothiazolone is a highly effective, broad-spectrum biocide belonging to the isothiazolinone class of compounds. It is a critical component for preventing microbial growth and spoilage in a wide range of industrial water systems and formulated products. This product is essential for manufacturers and processors in industries such as paints & coatings, metalworking fluids, and personal care, where long-term preservation and system integrity are paramount.

Application

• Industrial Water Treatment: Primary biocide for cooling towers, process water, and paper mill systems to control bacteria, fungi, and algae.
• Paints & Coatings Preservation: In-can preservative to prevent spoilage and maintain product stability in water-based formulations.
• Metalworking Fluid Preservation: Key additive to extend the service life of synthetic and semi-synthetic fluids by inhibiting microbial degradation.
• Personal Care & Cosmetics: Used as a preservative in rinse-off products and certain leave-on formulations to ensure product safety and shelf-life.
• Adhesives & Sealants: Protects water-based adhesive products from microbial contamination during storage and application.
• Household & Institutional Cleaners: Incorporated into liquid detergents and cleaning solutions to prevent in-use contamination.

Basic Information

Product Name	2-n-Octyl-3(2H)-Isothiazolone
CAS No.	265302-01-0
Molecular Formula	C11H19NOS
Molecular Weight	213.34 g/mol
Synonyms	2-Octyl-3(2H)-isothiazolone; 2-Octyl-4-isothiazolin-3-one; OIT; Octylisothiazolinone; Kathon 893; Kathon 4200; Micro-Chek 11; 4-Isothiazolin-3-one, 2-octyl-
EINECS	Contact for details

Quality Control

Our 2-n-Octyl-3(2H)-Isothiazolone is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, potency, and consistency. Certificates of Analysis (COA) documenting key parameters are provided to guarantee supply reliability and performance for your formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong alkalis and incompatible organic solvents. For long-term storage, consider using an inert atmosphere to minimize potential degradation.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	1.030 - 1.050
pH (1% solution)	3.0 - 5.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.