Description

2-Methylisothiazol-3(2H)-One Hydrate(50% H2O) is a stabilized, aqueous solution of a potent isothiazolinone derivative, primarily valued for its effective biocidal and preservative properties. This compound is critical for preventing microbial growth and spoilage in water-based systems and formulations, ensuring product integrity and shelf life. It is an essential raw material for manufacturers in the industrial, institutional, and consumer product sectors requiring reliable in-can and dry-film protection.

Application

• Industrial Biocide: Used as a preservative and antimicrobial agent in metalworking fluids, cooling water systems, and paper mill process waters.
• Paints & Coatings: Acts as an in-can preservative for latex paints, adhesives, and polymer emulsions to prevent bacterial and fungal degradation.
• Personal Care & Cosmetics: Serves as a preservative in shampoos, liquid soaps, and other rinse-off formulations to ensure product safety and stability.
• Household & Institutional Cleaners: Incorporated into detergent formulations and surface cleaners to provide antimicrobial efficacy and prevent spoilage.
• Oilfield Applications: Utilized in drilling muds and completion fluids to control sulfate-reducing bacteria and other problematic microbes.
• Leather & Textile Processing: Applied as a biocide in process baths and finishing chemicals to prevent microbial damage.

Basic Information

Product Name	2-Methylisothiazol-3(2H)-One Hydrate(50% H2O)
CAS No.	2089381-44-0
Molecular Formula	C4H5NOS • xH2O
Molecular Weight	115.15 (Anhydrous basis)
Synonyms	2-Methyl-3(2H)-isothiazolone hydrate; 2-Methyl-4-isothiazolin-3-one hydrate; MIT Hydrate; 2-Methylisothiazolin-3-one solution; 2-Methyl-2H-isothiazol-3-one hydrate; 2-Methyl-3-isothiazolone; Aqueous solution of 2-methyl-4-isothiazolin-3-one
EINECS	Contact for details

Quality Control

Our 2-Methylisothiazol-3(2H)-One Hydrate(50% H2O) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent potency, purity, and performance. A comprehensive Certificate of Analysis (COA) documenting assay, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and excessive heat. The aqueous nature of this product reduces freezing risk, but prolonged exposure to temperatures below 0°C should be avoided.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	48.0 - 52.0 % (as 2-Methylisothiazol-3(2H)-One)
pH (10% solution)	3.0 - 5.0
Water Content	48.0 - 52.0 %

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