Common name

Clomazone

Other name

Dimethazon

Chemical Name

2-(2-chlorobenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one

Formulations

95%TC 、480g/l EC、 72%EC

Descriptions

1. Mp.: 25℃

2. Boiling Point : 275.4℃

3. Density : 1.129(20℃)

4. Formula:C₁₂H₁₄CLNO₂

5.Vapor pressure : 19.2mPa(25℃)

6. Appearance: Light brown clear liquid

7. Solubility: Water 1.1 g/L (25℃), easily soluble in acetone, acetonitrile, methylene chloride.

Toxicity

Oral Acute oral LD₅₀ for male rats 2077, female rats 1369 mg/kg.

Acute percutaneous LD₅₀ for rabbits >2000 mg/kg.

Practically non-irritating to eyes (rabbits).

Inhalation LC₅₀(4h)for rats4.8mg/l.

Birds Acute oral LD₅₀ for bobwhite quail and mallard ducks>2510mg/kg.

LC₅₀(8d)for bobwhite quail and mallard ducks>5620ppm.

Other aquatic spp LC₅₀ for pink shrimp 8.9, eastern oyster 5.3 mg/l.

Worms LC₅₀ (14 d) for Eisenia foetida 156 mg/kg.

Application

Biochemistry Inhibits carotenoid biosynthesis; target enzyme not known.

Selective herbicide, bsorbed 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 preemergence or preplant incorporated.

Phytotoxicity Foliarcontact 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..