Dimethylurea

Colorless to white solid with an amine-like odor

Fixed

1.14 g · cm -3

105-108 ° C

268-270 ° C

6 hPa ( at 115 ° C)

Slightly soluble in water ( 765 g · l-1 at 21.5 ° C)

4000 mg · kg -1 ( LD50, rat, oral)

-312.1 KJ / mol

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N, N'- dimethylurea is a chemical compound from the group of urea derivatives.

Production and representation

N, N'- dimethyl urea is produced in addition to carbon dioxide in the hydrolysis of methyl isocyanate.

The synthesis of dimethyl possible also by a substitution reaction in which urea and ammonia and methylamine are used as a by- product.

Properties

N, N' -dimethylurea is a flammable, colorless to white solid with an amine-like odor. It is hygroscopic, readily soluble in water and its aqueous solution is alkaline. Technical N, N'- dimethylurea contains minor amounts of methyl urea and Trimethylharnstoffen as an impurity.

Use

N, N'- dimethylurea is used ( by Traub ash synthesis), theophylline, drugs, textile additives, herbicides and other compounds for the preparation of caffeine. In the textile industry, it is used as intermediate for the preparation of formaldehyde-free finishing agents for textiles. The global production of dimethylurea is estimated to be less than 25,000 tonnes in 2001.

Related compounds

• N, N- dimethyl (1,1- dimethyl )