Clomazone 97% technical
NOMENCLATURE
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]
PHYSICAL CHEMISTRY
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)
APPLICATIONS
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.
Package:
clomazone: 200 kg plastic drum
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