chlorophos;metriphonate;DEP; trichlorphon;dipterex*

2,2,2-trichloro-1-hydroxyethylphosphonic acid dimethyl ester

C₄H₈Cl₃O₄P

Form Colourless crystals, with a weak, characteristic odour.

Melting point 78.5~84℃. Density 1.73(20℃).

Solubility In water 120 g/l (20℃). Readily soluble in common organic solvents (with the exception of aliphatic hydrocarbons and petroleum oils), e.g. hexane 0.1-1, dichloromethane, isopropanol >200, toluene 20-50 (all in g/l, 20℃).

Oral Acute oral LD50 for male and female rats >250 mg/kg.

Skin and eye Acute percutaneous LD50 (24 h) for male and female rats >5000 mg/kg.

Not irritating to skin and eye (rabbits).

Inhalation LC50 (4 h) for male and female rats >2.3 mg/l air (aerosol).

Insecticidal control in agriculture, horticulture, forestry, food storage, gardening, households, and animal husbandry. In particular, control of Diptera, Lepidoptera, Hymenoptera, Hemiptera, and Coleoptera on many crops.

Description: White solid,free from visible extraneous matter;

Active Ingredient Content: ≥97%;

Water: ≤0.3%;

Acidity (as H₂SO₄): ≤1.8%;

Acetone Insoluble Material: ≤0.5%