The nature and stability of sulfamic acid
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. Decomposes at high temperatures, releasing toxic gases such as nitrogen and sulfur oxides. Sulfamic acid and its salts and various metal compounds can form 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. The aqueous solution is a high ionizer. strong acid. It is weakly reactive to organic matter, and its salts are easily soluble in water (except alkaline mercury salts). When the aqueous solution is boiled, it is hydrolyzed to ammonium sulfate. poisonous! It is non-volatile and non-hygroscopic and stable at room temperature. Soluble in water, the aqueous solution is acidic. Hydrolysis in boiling water to form NH+4 and HSO-4.
2. Sulfamic acid does not absorb moisture in the air and can be stored for a long time at room temperature and in a dry environment. It is chemically stable and its aqueous solution is highly acidic and corrosive to metals.
3. Solubility: soluble in water, liquid ammonia, slightly soluble in ethanol and methanol, slightly soluble in acetone and insoluble in ether. Do not dissolve in organic solvents. Soluble in nitrogen-containing lye and liquid nitrogen; also soluble in nitrogen-containing organic reagents such as pyridine; insoluble in ethanol and methanol. It dissolves moderately in water and is difficult to mix with common non-polar solvents such as THF or toluene.
4. Stability: Stable
5. Incompatible materials: strong oxidants, strong bases
6. Conditions to avoid: Heating
7. Polymerization hazard: no polymerization
8. Decomposition products: sulfur oxides, nitrogen oxides
