Tebuthiuron

1 - (5 -tert-butyl -1 ,3,4- thiadiazol- 2-yl ) -1,3- dimethylurea

Colorless solid

Fixed

1.1 g · cm -3 ( bulk density )

From 161.5 to 164 ° C ( decomposition)

3.6 hPa ( 20 ° C)

• Sparingly soluble in water (2.3 g · l-1 at 25 ° C)
• Soluble in acetone and methanol,

Attention

• 644 mg · kg -1 ( LD50, rat, oral)
• 5000 mg · kg -1 ( LD50, rat, transdermal)

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Tebuthiuron is a chemical compound from the group of urea derivatives.

Production and representation

Can tebuthiuron by a multistage reaction of methyl -2 ,2- dimethylpropionate are obtained with hydrazine, methylthiourea, sulfuric acid and methyl isocyanate.

Properties

Tebuthiuron is a colorless solid, which decomposes when heated before reaching the melting point and is sparingly soluble in water.

Use

Tebuthiuron is a relatively non-selective, activated in the soil herbicide that acts by inhibiting photosynthesis. It is used for control of weeds, grasses and shrubs on pastures and a variety of industrial sites including airports, industrial areas, non- agricultural land such as roads and sidewalks. Primary applications include pastures, railways and other industrial plants. It was approved in the U.S. in 1974. In Germany it was approved between 1982 and 1986.

Tebuthiuron is not a valid crop protection agent in the European Community. In Germany, Austria and Switzerland, no plant protection products containing this active ingredient are allowed.