1. In a dry environment at room temperature, sulfamic acid is relatively stable, as long as it is kept out of contact with water, the solid does not absorb moisture. It decomposes at high temperature and emits toxic gases such as nitrogen and sulfur oxides. Sulfamic acid and its salts and various metal compounds can generate soluble salts. Decomposes at 260°C. Soluble in water, liquid ammonia, slightly soluble in methanol, insoluble in ethanol, ether organic solvent and carbon disulfide, liquid sulfurous acid. Aqueous solutions are highly ionized species. strong acid. The reactivity to organic matter is weak, and its salts are easily soluble in water (except for alkaline mercury salts). When its aqueous solution is boiled, it is hydrolyzed to ammonium sulfate. poisonous! It is neither volatile nor hygroscopic and stable at room temperature. Soluble in water, the aqueous solution is acidic. Hydrolysis in boiling water produces NH+4 and HSO-4.