Biocide Chemicals

Shandong IRO are famous for high-quality biocide
chemicals, professional service, experienced expert
and advanced technology.Biocides category as below:
aldehydes, halogens, hydantoins, isothiazolinones and
other environment-friendly biocides.


2-Methyl-4-isothiazolin-3-One, MIT Biocide

CAS No.: 2682-20-4

Molecular Formula: C4H5NOS

Molecular Weight: 115.15

Structural Formula:




2-Methyl-4-Isothiazolin-3-One is sometimes called methylisothiazolinone. It is a powerful biocide and preservative within the group of isothiazolinones. The methylisothiazolinone (cas no. 2682-20-4) is widely used in cosmetics, shampoos and body care products.

2-methyl-2H-isothiazol-3-one (MIT) has a pH range of 2.0-12.0 and is miscible with water. Its chemical structure is similar to formaldehyde. MIT biocide (cas no 2682-20-4) is cytotoxic and affects a wide variety of cells. For the sake of consumer safety, the European Union Scientific Committee on Consumer Safety has classified it as a contact sensitizer.

Note: 5-chloro-2-methyl-4-isothiazolin-3-one cas no. is 26172-55-4.


AppearanceClear colorless to light yellow liquid
Purity50%, 20%, 10% or any needed


2-Methyl-4-Isothiazolin-3-One (MIT) is an antimicrobial. It is used to control slime-forming bacteria, fungi and algae in cooling water systems, fuel storage tanks, pulp and paper mill water systems, oil extraction systems and other industrial settings.

It is frequently used in personal care products. Such as shampoos and other hair care products, as well as certain paint formulations.

Moreover, MIT biocide is often used in combination with either Chloromethylisothiazolinone (known as Kathon CG when paired with Methylisothiazolinone) or Benzisothiazolinone (an added antiseptic).

2-Methyl-4-Isothiazolin-3-One is also used to control the growth of mold, mildew, and sapstain on wood products.

Package and Storage

Packed in IBC tank or 200L plastic drum. Keep MIT biocide in a cool place and avoid direct exposure to the sunlight.