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Tebuthiuron

Identification

Synonyms:1-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea (IUPAC)
CAS No.: 34014-18-1 EC No.: 251-793-7
Molecular Weight: 228.3116
Molecular Formula: C9H16N4OS
Structural Formula:Tebuthiuron
Form Colourless, odourless solid.
M.p. 162.85 °C B.p.
Decomp. c. 275 °C
V.p. 0.04 mPa (25 °C, gas saturation method)
Solubility: water 2.5 g/l (20 °C). benzene 3.7, hexane 6.1, 2-methoxyethanol 60, acetonitrile 60(all in g/l, 25 °C).
Stability Stable at 52°C (highest storage temperature tested). Stable in aqueous media between pH 5 and 9. On hydrolysis, DT50 (25°C) >64d.

Application

Tebuthiuron is a photosynthetic electron transport inhibitor at the photosystem II receptor site. Mode of action Systemic soil herbicide with low selectivity, absorbed mainly by the roots, with ready translocation. Used as broad-spectrum herbicide for control of herbaceous and woody plants, annual weeds, and many perennial grass and broad-leaved weeds. Uses include total control of vegetation in non-crop areas, undesirable woody plants in pastures and rangeland, and grass and broad-leaved weeds in sugar cane. Phytotoxicity Not to be applied near desirable trees or plants.

Specification*

95% TC and various WP, WG formulations

Standard Packaging

Pouch, bag, drum

Packaging photos coming soon

Risks and Safety Information

Class 6, Toxic

Oral Acute oral LD50(male rats) 477mg/kg, (female rats) 387. Skin and eye Dermal LD50(rabbits) >5000mg/kg. Not a skin or eye irritant. Not a skin sensitiser. Birds Acute oral LD50(chickens, bobwhite quail and mallard ducks) >500mg/kg. Fish LC50 (96h for rainbow trout) 144

Warning! Toxic

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