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Clomazone

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Common name clomazone (BSI, ANSI, draft E-ISO, (f) draft F-ISO)

IUPAC name 2-(2-chlorobenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one; 2-(2-chlorobenzyl)-4,4-dimethylisoxazolidin-3-one 

Chemical Abstracts name 2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone 

Other names dimethazone*  CAS RN [81777-89-1]  Development codes FMC 57 020 

                                        PHYSICAL CHEMISTRY

Mol. wt. 239.7  M.f. C12H14ClNO2  Form Clear, colourless to light brown, viscous liquid.  M.p. 25 ℃ B.p. 275℃  V.p. 19.2 mPa (25 ℃)  KOW logP = 2.5  Henry 4.19 ?10-3 Pa m3 mol-1  S.g./density 1.192 (20 ℃)  Solubility In water 1.1 g/l. Miscible with acetone, acetonitrile, chloroform, cyclohexanone, dichloromethane, methanol, toluene, heptane, dimethylformamide.  Stability Stable at ambient temperatures for at least 2 y; stable at 50 ℃ for at least 3 mo. In sunlight, DT50 >30 d in aqueous solution.  F.p. 70-75 ℃ (closed cup)