Methylchloroisothiazolinone Names IUPAC name 5-Chloro-2-methyl-1,2-thiazol-3(2H)-one Other names 5-Chloro-2-methylisothiazol-3(2H)-one 5-Chloro-2-methyl-4-isothiazolin-3-one Chloromethylisothiazolinone Chloromethylisothiazolone Methylchloroisothiazolinone Methylchloroisothiazolone CMI CMIT MCI MCIT Identifiers CAS Number 26172-55-4 Y 3D model (JSmol) Interactive image ChEBI CHEBI:53621 Y ChemSpider 30800 Y ECHA InfoCard 100.043.167 PubChem CID 33344 UNII DEL7T5QRPN Y InChI InChI=1S/C4H4ClNOS/c1-6-4(7)2-3(5)8-6/h2H,1H3 Y Key: DHNRXBZYEKSXIM-UHFFFAOYSA-N Y InChI=1/C4H4ClNOS/c1-6-4(7)2-3(5)8-6/h2H,1H3 Key: DHNRXBZYEKSXIM-UHFFFAOYAV SMILES ClC=1SN(C(=O)C=1)C Properties Chemical formula C4H4ClNOS Molar mass 149.59 g·mol−1 Appearance Colorless liquid Density 1.02 g/cm³ Solubility in water Miscible Hazards R-phrases (outdated) R23/24/25 R34 R43 R50/53 S-phrases (outdated) (S2) S26 S28 S36/37/39 S45 S60 S61 Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references