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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

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Johannes Geier et al.
Contact dermatitis, 67(6), 334-341 (2012-09-22)
The frequency of sensitization to methylchloroisothiazolinone (MCI)/ methylisothiazolinone (MI) observed in the Information Network of Departments of Dermatology (IVDK) was constantly around 2.1% from 1998 to 2009. After that, it increased to 3.9% in 2011, paralleled by an increase in
Wolfgang Uter et al.
Contact dermatitis, 67(3), 125-129 (2012-05-09)
The preservative methylchloroisothiazolinone (MCI)/methylisothiazo- linone (MI) is an important allergen, and has thus been subject to regulation in some areas of exposure, mainly in cosmetics. To examine whether a decline in sensitization prevalence and intensity of elicitation (by the patch
Kevin H Gardner et al.
Archives of dermatology, 146(8), 886-890 (2010-06-23)
Methylchloroisothiazolinone/methylisothiazolinone (MCI/MI), a common preservative in some brands of moist toilet paper (baby wipes and moist towelettes), has been reported to be a cause of allergic contact dermatitis. However, few cases have been reported in the United States. We report
Paula Maio et al.
Cutaneous and ocular toxicology, 31(2), 151-153 (2011-11-05)
Several preservatives are currently allowed in cosmetic products in the EU. However, only a few of them are strongly represented on the market: formaldehyde, parabens, formaldehyde releasers and methylchoroisothiazolinone/methylisothiazolinone (MCI/MI). MCI/MI has been widely used during recent years for the
Juan García-Gavín et al.
Contact dermatitis, 63(2), 96-101 (2010-07-16)
A few cases on primary sensitization by, and occupational contact dermatitis from, methylisothiazolinone in paints and glues have been published. In cosmetics, methylisothiazoline (MI) is permitted in a concentration of 100 p.p.m., while 15 p.p.m. for the mixture of methylchloroisothiazolinone
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