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Isothiazolinones (MIT + CMIT)


Synonyms: MIT: 2-Methylisothiazol-3(2H)-one (IUPAC); Methylisothiazolinone; 2-Methyl-2,3-dihydroisothiazol-3-one; 2-Methyl-3-isothiazolone; 2-Methyl-4-isothiazolin-3-one; 2-Methylisothiazol-3-one
CMIT: 5-Chloro-2-methyl-3(2H)-isothiazolone; 5-Chloro-2-methyl-4-isothiazolin-3-one; 5-Chloro-2-methylisothiazol-3-one; Isothiazolone, 5-chloro-2-methyl-;
CAS No.: MIT 2682-20-4 CMIT 26172-55-4
EC No.: MIT 220-239-6 CMIT ---
Molecular Weight: MIT 115.1496 CMIT 149.5947
Molecular Formula: MIT C5H6Cl2N2O2 CMIT C4H4ClNOS
Flash point: 171 deg. C
Structural Formula: MIT+ CMIT




Isothiazolinones is composed of Chloromethylisothiazolinone (CMI or CMIT) and Methylisothiazolinone (MI or MIT). Isothiazolinones are antimicrobials used to control bacteria, fungi, and algae in cooling water systems, fuel storage tanks, pulp and paper mill water systems, oil extraction systems, wood preservation and antifouling agents. They are frequently used in personal care products such as shampoos and other hair care products, as well as certain paint formulations. Often, combinations of MIT and CMIT (known as Kathon CG).


Parameters Specification
Appearance slight yellow liquid pale yellow liquid
Isothiazolinones content ~1.5% 14.0~15.0% min.
CMIT ~1.13% 10~12%
MIT ~0.35% 3~5%
Inert MgCl2 - 8-10%
Inert Mg(NO3)2 - 14%-18%
water - 60~64%
Specific Gravity ~1.20 1.26~1.33
pH value 2~4 1.0~4.0

Cosmetic grade available too

Standard Packaging

250 kg net/plastic drum, 1250 kg net/IBC

1000L IBC for isothiazolinones (MIT + CMIT)

Risks and Safety Information

Isothiazolinones (MIT + CMIT) is regulated by UN as CORROSIVE LIQUID, TOXIC, N.O.S.; Hazard Class: 8 subsidiary risk 6.1; UN 2922; PG II
For more information, please see MSDS.

Warning, Corrosive!Warning Toxic

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