NEW DOUBLE SALT OF SULFAMIC ACID AND POTASSIUM SULFATE
Existence of a new double salt, potassium hydrogen sulfate sulfamate (K2SO4·2HSO3NH2) has been confirmed by the measurements of mutual solubilities of HSO3NH2 and K2SO4 in water at 30°C. [Fig. 1] The double salt is a colorless, transparent and almost non-hygroscopic crystal having a composition of HSO3NH2 52.7%, K2SO4 47.3%(2:1 in mole), [Table 1] and melting point of 161∼162°C.