See All ProductsDiquat Dibromide

Action

Herbicide

Use

May be used as a defoliant/desiccant. A fast-acting, nonselective, foliar-applied, contact herbicide.

Formulation

Liquid, water soluble cation.

Identification

Common Names

Diquat Dibromide; Deiquat (Germany, Giant knotweed extract); Reglon (USSR); Diquat (ANSI, BSI, ISO-E, ISO-F, JMAF, WSSA)

CAS Codes

85-00-7 (diquat dibromide); 2764-72-9 (diquat); 6385-62-2 (diquat dibromide monohydrate)

Other Code Number

SHA 032201

Chemistry

Composition

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

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.

Molecular Formula

C12H12Br2N2.

Mode of Action / Resistance Management

Chemical Group

Bipyridlium

Mode of Action

Acts as contact. Absorbs energy produced by photosynthesis; forms peroxides that disrupt living cells

Action Group

HRAC Group D; WSSA Group 22

Environmental Guidelines

Hazard

Fish: LC50 (96 h) 21 mg/l (rainbow trout); 67 mg/l (mirror carp). Bird: Oral LD50 155 mg/kg (mallard duck). Bee: Oral LD50 22 µg/bee; nontoxic

Water Solubility

700,000 ppm

Safety Guidelines

Signal Word

WARNING

Toxicity Class

II

Toxicity

(Rat): Oral LD50 600 mg/kg b.w. (Mouse): Oral LD50 125 mg/kg. (Rabbit): Dermal LD50 260 mg/kg b.w. (Rat): Inhalation LC50 (4 h) 0.121 mg/l air

Handling/Storage Caution

Store above 32°F

Emergency Guidelines

First Aid

Get medical aid. Eyes: hold eyes open, rinse with water for 15-20 minutes. Remove contact lenses after first 5 minutes, then continue rinsing. Skin: remove contaminated clothing, rinse skin with plenty of water for 15-20 minutes. Ingestion: sip water if able to swallow. Do NOT induce vomiting unless told to by poison control center or physician. Inhalation: remove to fresh air. If not breathing, get medical aid, then give artificial respiration, preferably mouth-to mouth