Preservatives & Biocides
REACH
Methylisothiazolinone
CAS Number
2682-20-4
EC Number
220-239-6
Abbreviation
MIT
What is Methylisothiazolinone?
Methylisothiazolinone (CAS 2682-20-4), commonly abbreviated as MIT, is a broad-spectrum biocide used to control microbial growth in aqueous industrial and consumer formulations.
Where is Methylisothiazolinone used?
- Coatings, paints and adhesives: in-can preservative preventing spoilage during storage and extending shelf life
- Water treatment: biofouling control in cooling towers, industrial water systems and paper mill process water
- Personal care: rinse-off products such as shampoos and liquid soaps
- Textile and leather processing: protection of wet-processed materials and finished goods from bacterial and fungal degradation
- It targets bacteria, fungi, and algae at low concentrations.
Commercial specifications
- Aqueous solution, typically at concentrations of 9.5% or 14%
- Higher-concentration formulations for industrial use
- Packaging ranges from drums to IBC containers depending on volume requirements
Other Names (Synonyms)
2-Methyl-3(2H)-isothiazolone|2-Methyl-4-isothiazolin-3-one|2-Methyl-4-isothiazoline-3-one|N-methylisothiazolone|3(2H)-Isothiazolone, 2-methyl-|2-methyl-3-isothiazolone|n-methylisothiazolin-3-one|Neolone 950|MIT
What are the physical properties of Methylisothiazolinone?
Melting Point 44 °C
Boiling Point 85 °C @ Press: 1.0 Torr
Density 1.25 (14% aq.)
Color Yellow
Form neat
Water Solubility 489g/L at 20℃
Vapor Pressure <0.1 mm Hg ( 25 °C)
Log P -0.486 at 20℃
How is Methylisothiazolinone classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS09· Environmental Hazard GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H301 Toxic if swallowed
H302 Harmful if swallowed
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to Methylisothiazolinone?
HS Code 29349990
UN Number 3077
ADR Class 9
Packing Group III
WGK (Germany) 2