Carbonic acid-guanidine (1:1) → HCID 21806735, compound

Participants

Reaction Steps

600 g of water and 432 g (3 mol) of thiobarbituric acid (Merck) were heated to 90° C. and 270 g (1.5 mol) of guanidine carbonate (Chemie Linz) were added while stirring. After stirring for a further 2 hours at the boiling point while refluxing, the guanidine thiobarbiturate formed was suction filtered, washed twice with cold water, and dried overnight at 105° C. in a drying cabinet. Guanidine thiobarbiturate was obtained in a yield of 80%. The melting point was 320°-325° C., and the decomposition temperature was above 450° C. The compound was identified by means of its IR spectrum.

Provenance & Evidence