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Benzisothiazolinone CAS 2634-33-5

Production name: Benzisothiazolinone
Cas No.:2634-33-5
Molecular Formula:C7H5SNO
Molecular weight: 151.19


Appearancewhite to light yellow powder
Assay HPLC≥99.0%
Melting point155.0-158.0℃

85%min Usage

1.It is widely used biocide that inhibits bacterial growth and spoilage.

2.It is toxic to both microbes and fungus. BIT is also marketed as a mixture with other isothiazolinone-based biocides.

3.Typical concentrations in products are 200–400 ppm depending on the application area and the combination with other biocides.

4.It also is active against bacteria and fungi, especially in highly alkaline environments.

5.It is used as a preservative in emulsion paints, varnishes, adhesives, washing agents, fuels and in the papermaking process.

6.In paints, it is commonly used as a mixture with methylisothiazolinone.

7.It is also used to preserve a variety of water-based process liquids, including metal-working fluids, oil-field fluids and injection water, textile solutions, pesticide emulsions, and mineral slurries and coatings used in paper mills.


AppearanceYellow and transparent solution
Content of Active Substance (%)≥10.0
pH value9.0~14.0
Density (g/ml)1.02~1.10

10% Usage:

  1. For use in cosmetics, body care products, and other daily chemicals, the concentration of using is in the range of 0.05-0.40% (w/w) depending on the storage environment and whether the product is susceptible to the destroy of microorganisms. The specific formula and instructions for the concentration of using will be based on the company’s microbial technology division

  2. It can be added at any production step; but it’s suggested to be added at the final step at less than 50 ℃; avoid adding at a temperature of higher than 50 ℃.


It should be sealed and shaded to be stored in a dry, cool, well ventilated place.