Acetochlor 95%TC

Common name

Acetochlor

chemical name

2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide

92%/93%/95%TC 50%EC 900g/l EC 990g/l EC 50%ME 50%EW

Description

1. Amber to pale-yellow liquid

2.Molecular weight : 269.8

3. Melting point >0C,

4. Boiling point >200C,

5. Vapour pressure:>133.3pa;

6. Solubility In water 223 mg/l (25 ºC).acetochlor is soluble in alcohol,acetone,

toluene and tetrachloride

7. Stability: Acetochlor is stable under normal temperature and pressures

and is stable in neutral,weakly acidic and weskly alkaline media.

Toxicity

MAMMALIAN TOXICOLOGY
Oral Acute oral LD50 for rats 2148 mg/kg.

Skin and eye Acute percutaneous LD50 for rabbits 4166 mg/kg.

Contact sensitisation reactions observed in guinea pigs.

Practically non-irritating to eyes and skin (rabbits).

Inhalation LC50 (4 h) for rats >3.0 mg/l air.

NOEL (2 y) for rats 10 mg/kg b.w. daily; (1 y) for dogs 12 mg/kg b.w. daily.

ADI 0.01 mg/kg b.w.

Toxicity class WHO (a.i.) III EC hazard Xn; R20| Xi; R37/38| R43| N; R50, R53

ECOTOXICOLOGY
Birds Acute oral LD50 for bobwhite quail 1260 mg/kg.

LC50 (5 d) for quail and mallard ducks >5620 mg/kg.

Fish LC50 (96 h) for rainbow trout 0.36, bluegill sunfish 1.5 mg/l.

Daphnia LC50 (48 h) 9 mg/l. Bees LD50 (24 h) (contact) >200 mg/bee;

(oral) >100 mg/bee. Worms LC50 (14 d) 211 mg/kg.

Function

Biochemistry Inhibits cell division by blocking protein synthesis.

Maize tolerance of chloroacetamides is due mainly to conjugation

with glutathione; P450 metabolism may also be a factor.

Mode of action Selective herbicide, absorbed mainly by the shoots and

secondarily by the roots of germinating plants. Uses Used pre-emergence or

pre-plant to control annual grasses, certain annual broad-leaved weeds and yellow nutsedge in maize (at 3 kg/ha), peanuts,

soya beans, cotton, potatoes and sugar cane.