Description

1,2-Benzisothiazol-3(2H)-One, Sodium Salt is the sodium salt derivative of a widely used isothiazolinone biocide. This compound is valued for its potent antimicrobial and preservative efficacy against a broad spectrum of bacteria, fungi, and algae. It is a critical functional ingredient for manufacturers in the water treatment, paint and coating, and personal care industries seeking to prevent microbial spoilage and ensure product stability.

Application

• Industrial Water Treatment: As a highly effective biocide in cooling towers, paper mills, and industrial process water systems to control slime-forming bacteria and algae.
• Paints, Coatings, and Adhesives: A key in-can preservative to prevent microbial degradation, extending shelf-life and maintaining product integrity in water-based formulations.
• Personal Care and Cosmetics: Used as a preservative in shampoos, liquid soaps, and other rinse-off formulations to ensure consumer safety and product longevity.
• Metalworking Fluids: Incorporated to inhibit microbial growth in synthetic and semi-synthetic fluids, preventing foul odors and system corrosion.
• Household and Institutional Cleaners: Provides preservative function in liquid detergents and cleaning solutions to maintain efficacy during storage.
• Oilfield Applications: Used in drilling muds and fracturing fluids to control bacterial activity that can cause souring and material degradation.

Basic Information

Product Name	1,2-Benzisothiazol-3(2H)-One, Sodium Salt
CAS No.	58249-25-5
Molecular Formula	C7H4NNaOS
Molecular Weight	173.16 g/mol
Synonyms	1,2-Benzisothiazolin-3-one sodium salt; Sodium 1,2-benzisothiazol-3-olate; Sodium BIT; Benzisothiazolinone sodium salt; BIT Na; Proxel XL 2; Acticide BIT 20N; 2H-1,2-Benzisothiazol-3-one, 1,1-dioxide, sodium salt (related oxide form)
EINECS	Contact for details

Quality Control

Our 1,2-Benzisothiazol-3(2H)-One, Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, potency, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, pH, and identification are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
pH (10% solution)	9.0 - 11.0
Water Content	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm

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