Agent Name

Tebuthiuron

CAS Number

34014-18-1

Formula

C9-H16-N4-O-S

Major Category

Pesticides

Synonyms

1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea; 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-3-dimethylharnstoff [German]; Brulan; Brush bullet; EL-103; Graslan; Graslan 250 brush bullets; N-(5-(1,1-Dimethylaethyl)-1,3,4-thiadiazol-2-yl)-N,N'-dimethylharnstoff [German]; N-(5-(1,1-Dimethylethyl)-1,3,4-thiadiazol-2-yl)-N,N'-dimethylurea; Perflan; Prefmid; SHA 105501; Spike; Spike 80W; Tebulan; Tebuthiuron; Tiurolan; Urea, 2-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethyl- (8CI); Urea, N-(5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl)-N,N'-dimethyl-(9CI); [ChemIDplus]

Category

Herbicides, Urea Derivative

Description

Off-white crystals with a pungent odor formulated for spray, granules or pellets; [EXTOXNET]

Sources/Uses

Used as a broad-spectrum herbicide in non-farm areas; [EXTOXNET]

Comments

Urea-derived herbicides have low toxicity in animal feeding studies; [HSDB] Systemic toxicity unlikely unless large amounts ingested; [EPA Pesticides, p. 122] It has low toxicity by ingestion and skin absorption when tested in experimental animals. The oral LD50 in rats is 644 mg/kg. [EXTOXNET]

Reference Link

EXTOXNET PIP - TEBUTHIURON

Exposure Assessment
Vapor Pressure

2.0E-6 mm Hg

Lethal Concentration

LC50 (rat) >3696 mg/m3

Reference Link

EPA Pesticide Chemical Search

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: