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Clomazone 97% technical
Clomazone 97% technical

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] 

Mol. wt. 239.7  M.f. C12H14ClNO2  Form Clear, colourless to light brown, viscous liquid.  M.p. 25 ºC  B.p. 275 ºC  V.p. 19.2 mPa (25 ºC)  KOW logP = 2.5  S.g./density1.192 (20 ºC)  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 ºC for at least 3 mo. In sunlight, DT50 >30 d in aqueous solution.  F.p. 70-75 ºC (closed cup) 

Biochemistry Inhibits carotenoid biosynthesis; target enzyme not known.  Mode of action Selective herbicide, absorbed by the roots and shoots and translocated upward. Susceptible species emerge but are devoid of pigmentation.  Uses Control of broad-leaved and grass weeds in soya beans, peas, maize, oilseed rape, sugar cane, cassava, pumpkins, and tobacco. Applied pre-emergence or pre-plant incorporated.  Phytotoxicity Foliar contact or vapours may cause visual symptoms of chlorosis to nearby sensitive plants.  Formulation types CS; EC; WP.  Compatibility Compatible with many other herbicides, e.g. metribuzin, linuron, chloramben, alachlor, trifluralin, pendimethalin, metolachlor, oryzalin or ethalfluralin. 

clomazone: 200 kg plastic drum



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