Chloromethyl-Methylisothiazolone (CMIT/MIT) Biocide Model Number: TC-113
Chemical Name: 5-Chloro-2-Methyl-4-Isothiazolin-3-One
Synonym: Isothiazolinones, Kathon WT, Metatin GT, Acticide, CMIT ISOTHIAZOLONE
CAS No.: 26172-55-4, 2682-20-4
Molecular Formula: C4H5NOS
Molecular weight: 115.15 g/mol
CMI/MI is composed of 5-chloro-2-methyl-4-thiazoline-3-ketone (CMI) and 2-methyl-4-thiazoline-3-ketone (MI). The bactericidal effect of CMI/MI is carried out through breaking the bond between bacteria and algae protein. When contacted with microbes, it can quickly inhibit their growth, thus leading to death of these microbes. CMI/MI has strong inhibition and biocidal effects on ordinary bacteria, fungi and alga, and has many advantages such as high biocidal efficiency, good degradation, no residual, safety in operation, good compatibleness, good stabilization, low cost in operation.
CMI/MI can mix with chlorine and most cation, anion, and non-ionic surfactants. When used at high dosage, its biosludge stripping effect is excellent.
CMI/MI is a kind of fungicidal with properties of broad spectrum, high efficiency, low toxicity and non-oxidative, it is the ideal biocidal in industrial circulating cool water system and in wastewater treatment in oilfield, papermaking, pesticide, cutting oil, leather, detergent and cosmetics etc..
for grade II, the dosage of 150-300mg/L is preferred, when used as boicide, the dosage of 80-100mg/L is preferred, and charges every 3-7 days. No used together with oxidative fungicidal such as chlorine, and no used in cooling water system containing sulfur. When used together with quaternary amine, the effect will be better. When used as industrial fungicide, the dosage of 0.05-0.4% is preferred.
Light yellow or light green transparent liquid
Active content, %
Density (@ 20℃), g/cm3
pH (as it, @ 25℃)
2.0 - 5.0
CMI/MI (wt %)
2.5 - 4.0
Corrosive, Avoid contact with eye and skin, Wear splash resistant safety goggles and rubber gloves. Once contacted, flush with water.
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