Agent Name

Diquat

CAS Number

2764-72-9

Formula

C12-H12-N2

Major Category

Pesticides

Synonyms

Diquat dibromide; 1,1`-Ethylene-2,2`-bipyridyllium ion; [NIOSH]

Category

Herbicides, Bipyridyl

Description

Dibromide salt: Yellow crystals. Commercial product may be found in a liquid concentrate or a solution. [NIOSH]

Sources/Uses

Herbicide; Pesticide; Defoliant; [ChemIDplus]

Comments

Poisoning usually occurs after toxic ingestion, e.g., attempted suicide. Symptoms of poisoning include acute renal failure, shock, convulsions, delirium, and skin burns. Diquat does not cause progressive pulmonary fibrosis as seen after paraquat poisoning. [EPA Pesticides, p. 111] "Among the many herbicides in use, only the bipyridyl compounds have appeared to produce hepatic injury in humans. Even these agents have produced hepatic injury only as the result of ingestion of large amounts, not because of environmental contamination and questionably as the result of occupational exposures." [Zimmerman, p. 415]

Reference Link

EXTOXNET - Diquat dibromide

Exposure Assessment
Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.5 mg/m3(inhalable fraction), 0.1 mg/m3(respirable fraction)

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Nephrotoxin

Yes

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: