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Chemical Name: Diquat: 1,1¢-ethylene-2,2¢-bipyridylium ion 6,7-dihydrodipyrido-(1,2-a:2¢,1¢-c)pyrazinediium ion (Chem Abs usage) formulated as dibromide monohydrate salt

CAS No.: CAS 2764-72-9 (diquat);

Formulation: 2 lb./gal. (U.S.); 200 g/l (Outside U.S.).

Molecular formula: C₁₂H₁₂Br₂N₂

PROPERTIES:
Dark brown liquid, odorless. Stable in neutral or acid solutions; decomposes in alkaline solutions. Slightly soluble in alcohols, hydroxylic solvents. Practically insoluble in nonpolar organic solvents.

Toxicity:
(Rat): Oral LD50 600 mg/kg b.w. (Rabbit): Dermal LD50 260 mg/kg b.w. (Rat): Inhalation LC50 (4 h) 0.121 mg/l air

Uses: Desiccation of potato vines, seed crops; control of sugarcane flowering. Aquatic, industrial weed control.