On boiling their solution in caustic alkalis, ammonia is liberated.
Iron, which stands so well against aqueous alkalis, is most violently attacked by the fused reagents.
It is a crystalline solid, which melts at 30° C. and boils at 190 8° C. Fusion with alkalis converts it into salicylic acid.
The alkalis are used almost exclusively in the condition of caustic lyessolutions of their respective hydrates in water.
Alcoholic solutions of the alkalis also produce much nitrite along with some formate and acetate.