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Methylisothiazolinone for Preservative/Water Treatment CAS 2682-20-4 Mit 50%

MIT 50%, fully known as 5-chloro-2-methyl-4-isothiazolin-3-one, is a commonly used preservative mainly used in cosmetics, personal care products, cleaning agents, and other fields to kill bacteria, mold, yeast, and other microorganisms, thereby maintaining product quality and stability.
MIT 50% exists as a 50% aqueous solution and is a colorless to light yellow liquid. It has a good anti-corrosion effect and can kill microorganisms at different temperatures and pH conditions. In addition, MIT 50% has the advantages of low toxicity, low irritation, and easy dissolution, which are widely used in cosmetics, personal care products, and cleaning agents.
  • MIT 50%


  • 2934109099

Sinobio Isothiazolinones (CMIT/MIT )

CAS No. 26172-55-4, 2682-20-4
EINECS No. 247-500-7
UN Number: 2922 8(6.1)
Molecular weight: 115.16

CMIT/MIT(Isothiazolinones) is composed of 5-chloro-2-methyl-4-thiazoline-3-ketone (CMI) and 2-methyl-4-thiazoline-3-ketone (MI). The bactericidal effect of CMIT/MIT is carried out through breaking the bond between bacteria and algae protein. When contacted with microbes, CMIT/MIT can quickly inhibit their growth, then leading to death of these microbes.

CMIT/MIT(Isothiazolinones) is a kind of broad spectrum, high efficiency, low toxicity, non-oxidative biocide.

CMIT/MIT(Isothiazolinones) has strong inhibition and biocidal effects on ordinary bacteria, fungi and alga. It has many advantages such as high-efficiency, good degradation, no residual, safety in operation, great compatibleness, good stabilization, low cost and so on. It can mix with chlorine and most cation, anion, and non-ionic surfactants. When used at high dosage, its effect on biosludge stripping is excellent





Colourless clear,yellow solution

Total active Ingredient %




Advantages of MIT 50%:

1. Good anti-corrosion effect: MIT 50% has a good anti-corrosion effect, which can kill a variety of microorganisms under different temperatures and pH conditions, protecting product quality and stability.

2.Low dosage: MIT 50% can provide effective anti-corrosion effect at a small dosage, thus improving product cost effectiveness.

3. Strong adaptability: MIT 50% is applicable to a variety of cosmetics, personal care products, detergents, and other products, such as shampoo, conditioner, moisturizer, hand sanitizer, and detergent.

4.Easy to dissolve: MIT 50% is easy to dissolve in water, so it can be used together with other preservatives to improve the anti-corrosion effect.

5. High storage stability: MIT has a high storage stability of 50%, is not easy to be oxidized and degraded, and can maintain long-term effectiveness


CMIT/MIT 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.

When used as sludge stripper for grade II, the dosage of 150-300mg/L is preferred, when used as biocide, the dosage of 80-100mg/L is preferred, and charges every 3-7 days. No used together with oxidative fungicidal 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.

Performance characteristics:

1. As a broad-spectrum, long-lasting bactericide to kill many bacteria, fungi and yeasts, the using amount is small.

2. Suitable for use in the medium of the pH value in the range of 2 to 9; free of divalent salt, cross-link no emulsion.

3. Miscible with water; can be added in any production step; easy to use.

4. It has a low toxicity and an appropriate concentration of using, which will lead to no harm completely.

Usage and Cautions:

1. In water treatment applications, dilute it into a 1.5% aqueous solution first. Add the solution at a quantity of 80 to 100 ppm for one or two times each week depending on the multiplication of microorganisms like bacteria and algae.

2. Avoid direct eyes' contact with it for a long period. Once the contact happens, rinse eyes with water without delay. No long-term contact with the skin is allowed.

3. Any contact with reducible metals is forbidden during storage, for example, iron and aluminum, so as to avoid decomposition.

4. Not suitable for use in the alkaline medium of pH> 9.0 due to its poor stability. Any combination of this chemical with highly nucleophilic chemicals, like S2- and R-NH2, will lead to declined quality or even complete failure of the product.

Standard packaging:

200KG/Drum or 1000KG IBC drum


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