Chemistry of inorganic compounds – Nitrogen or compound thereof – Oxygen containing
Patent
1978-03-08
1979-01-09
Vertiz, O. R.
Chemistry of inorganic compounds
Nitrogen or compound thereof
Oxygen containing
C01B 2154
Patent
active
041338707
ABSTRACT:
Ammonium sulfamate is prepared by introducing sulfur trioxide and ammonia into a pressure vessel that contains a melt essentially consisting of ammonium sulfonate and ammonium imido disulfonate using a molar ratio of NH.sub.3 to SO.sub.3 of 1.5 to 1.99:1. The gases that accumulate on top of the molten phase are not removed from the pressure vessel.
REFERENCES:
patent: 3404950 (1968-10-01), Sasaki et al.
patent: 3484193 (1969-12-01), Azakami et al.
patent: 3661516 (1972-05-01), Hofmeister
Hoechst Aktiengesellschaft
Roy Thomas W.
Vertiz O. R.
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