Method for manufacturing hydrazodicarbonamide

Details Method for manufacturing hydrazodicarbonamide Method for manufacturing hydrazodicarbonamide

1972-06-23

1977-09-20

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260239AA, 260566B, 423407, C07C13302, C01B 2116

Patent

active

040497127

ABSTRACT:
This invention relates to a method for preparing hydrazodicarbonamide ##STR1## which comprises reacting urea, sulfuric acid, water and an azine or a solution containing an azine of the formula ##STR2## wherein R.sub.1 is hydrogen and R.sub.2 or R.sub.1 and R.sub.2 each is a straight or branched alkyl radical or cycloalkyl radical of up to 6 carbon atoms or R.sub.1 and R.sub.2 of both the >C=N-- moieties together form a straight or branched chain alkylene radical of from 3 to 5 carbon atoms and recovering the hydrazodicarbonamide from the reaction medium.

REFERENCES:
patent: 2692281 (1954-10-01), Newby et al.
patent: 2801195 (1957-07-01), Doerr
patent: 3227753 (1966-01-01), Mehr et al.
patent: 3415882 (1968-12-01), Jenkins et al.
patent: 3527753 (1970-09-01), Needham et al.
Curtius et al., Journal F. Prakt. Chemie, Band 44, No. 2, pp. 199-200, (1891).

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