- Crystal system: orthorombic
- Crystal shape: flat tablets. Fast growing by cooling produces elongated crystals, slow evaporation gives shorter rectangular tables, resembling its aprent compound sulfamic acid.
- Color: transparent, colorless.
- Stability on air: stable on air
Reaction of sulfamic acid with potassium carbonate K2CO3 or hydroxide KOH:
K2CO3 + 2H3NSO3 → 2KSO3NH2 + H2O + CO2,
KOH + H3NSO3 → KSO3NH2 + H2O.
Solubility of this compound is big, and increases quickly with temperature. 100 ml of water dissolve 45.86 g of this salt at 9°C, 77.75 g at 25°C and 129.36 g at 45°C.
Crystals on the photo grew in one day from hot saturated solution after it was cooled to room temperature..
The compound is generally safe.
- DOI: 10.1002/crat.201000135: an article with information on crystal structure