Fenuron

Synonyms

1,1-Dimethyl-3-phenylurea; 1-Phenyl-3,3-dimethylurea; 3-Phenyl-1,1-dimethylurea; Amicure UR; Croptex Chrome; Croptex Ruby; Dibar; Dybar; Dyhard RU 300; Dyhard UR 300; Electrum; Falisilvan; Fenidin; Fikure 62U; Herbon Yellow; N,N-Dimethyl-N'-phenylurea; N-Phenyl-N',N'-dimethylurea; Omicure 94; PUD; PUD (herbicide); Quintex; Red; Urea, 1,1-dimethyl-3-phenyl-; Urea, N,N-dimethyl-N'-phenyl-; [ChemIDplus]

Category

Herbicides, Urea Derivative

Description

White or colorless solid; [HSDB] Off-white powder; [MSDSonline]

Sources/Uses

Used as herbicide to control woody plants and perennial weeds (especially on non-crop land); [HSDB]

Comments

Urea-derived herbicides have low toxicity in animal feeding studies; May induce methemoglobinemia; After daily doses of 150 mg/kg for 10 months, guinea pigs had anemia, hypothyroidism, and injury to the liver, kidneys, and heart; No effects in rats fed 500 ppm for 90 days; [HSDB] Systemic toxicity unlikely unless large amounts ingested; [EPA Pesticides, p. 122] May be hydrolyzed to aniline causing methemoglobinemia; [Merck Index] May cause irritation; May induce methemoglobinemia; [MSDSonline]

Biomedical References

3.75E-05 mm Hg

MetHgb is secondary toxic effect

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Processes

Industrial Processes with risk of exposure:

• Farming (Pesticides)