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725765

Sigma-Aldrich

2-Methyl-4-isothiazolin-3-one

95%

Synonym(s):

2-Methyl-3(2H)-isothiazolone

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About This Item

Empirical Formula (Hill Notation):
C4H5NOS
CAS Number:
2682-20-4
Molecular Weight:
115.15
Beilstein:
606203
EC Number:
220-239-6
MDL number:
MFCD01742315
UNSPSC Code:
12352100
PubChem Substance ID:
329764182
NACRES:
NA.21

Quality Level

100

Assay

≥94.0% (GC)
95%

form

lumps

impurities

≤5% water

SMILES string

CN1SC=CC1=O

InChI

1S/C4H5NOS/c1-5-4(6)2-3-7-5/h2-3H,1H3

InChI key

BEGLCMHJXHIJLR-UHFFFAOYSA-N

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Application

  • Insights into the mechanisms of within-species variation in sensitivity to chemicals: A case study using daphnids exposed to CMIT/MIT biocide.: This study investigates the differential sensitivity of daphnids to 2-Methyl-4-isothiazolin-3-one, highlighting the biochemical mechanisms underlying these variations. The findings provide crucial insights for environmental safety assessments (Kim et al., 2023).
  • Effects of the biocide methylisothiazolinone on Xenopus laevis wound healing and tail regeneration.: The study assesses the impact of 2-Methyl-4-isothiazolin-3-one on regenerative processes in amphibians, contributing to the understanding of its biological effects and potential toxicity (Delos Santos et al., 2016).
  • T cell lymphomatoid contact dermatitis: a challenging case and review of the literature.: This review includes discussions on 2-Methyl-4-isothiazolin-3-one-induced contact dermatitis, providing valuable information for dermatological applications and safety assessments (Knackstedt and Zug, 2015).

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1A

Supplementary Hazards

EUH071

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCG6210
BCCG0710
BCCD9464
BCCD7472
BCBX1165

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A Spawn et al.
Neuroscience, 205, 194-204 (2012-01-17)
Methylisothiazolinone (MIT) is a commonly used biocide known to be neurotoxic in vitro. Brief exposure of cortical neurons in culture to MIT results in increased neurodegeneration, whereas chronic exposure of developing neurons in culture to low concentrations of MIT has
Christina L Burnett et al.
International journal of toxicology, 29(4 Suppl), 187S-213S (2010-07-22)
Methylisothiazolinone (MIT) is a heterocyclic organic compound used as a preservative in cosmetics and personal care products in concentrations up to 0.01%. MIT is a colorless, clear liquid with a mild odor that is completely soluble in water; mostly soluble
Eleanor Higgins et al.
Dermatitis : contact, atopic, occupational, drug, 24(2), 73-76 (2013-03-12)
The isothiazolinones methylchloroisothiazolinone and methylisothiazolinone (MCI/MI) are the active ingredients in a frequently used preservative in cosmetic, household, and industrial products. This study reviewed our department's cases of allergic contact dermatitis caused by MCI/MI, outlining their clinical presentation and possible
Mari Paz Castanedo-Tardana et al.
Dermatitis : contact, atopic, occupational, drug, 24(1), 2-6 (2013-01-24)
The preservative methylisothiazolinone (MI) is the American Contact Dermatitis Society Contact Allergen of the Year for 2013. Because the use of MI in cosmetics and toiletries in the United States rises, MI exposure also rises. Although it might seem likely
M D Lundov et al.
The British journal of dermatology, 165(6), 1178-1182 (2011-07-23)
In the early 2000s the preservative methylisothiazolinone (MI) was released as an individual preservative for industrial products and, in 2005, it was permitted for use in cosmetic products. Up until then MI had been used only in combination with methylchloroisothiazolinone
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