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Herbicides

Diquat

Chemical Name: 1,1'-ethylene-2,2'-bipyridyldiylium dibromide salt

Formula: C12H12N2Br2

Molecular Weight: 344.06

CAS No.: 85-00-7

Structure:

Description:

Appearance: Technical diquat dibromide, which is greater than 95% pure, forms white to yellow crystals.

Melting Point: Decomposes above 300°C.

Vapour Pressure: Negligible20°C.

Stability: Water Solubility: 700,000 mg/L at 20°C, solubility in Other Solvents: i.s. in nonpolar solvents such as chloroform, diethyl ether, and petroleum ether; s.s in alcohol and hydroxylic solvents.

Specification: 40%TC,15%SL,20%SL

Uses: Diquat dibromide is a moderately toxic compound in EPA toxicity class II. It is a General Use Pesticide (GUP). Labels for products containing diquat dibromide must bear the Signal Word WARNING.

Diquat dibromide is a nonselective, quick-acting herbicide and plant growth regulator, causing injury only to the parts of the plant to which it is applied. Diquat dibromide is referred to as a desiccant because it causes a leaf or an entire plant to dry out quickly. It is used to desiccate potato vines and seed crops, to control flowering of sugarcane, and for industrial and aquatic weed control. It is not residual; that is, it does not leave any trace of herbicide on or in plants, soil, or water.

 

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