CAS Number: 16721-80-5 Molecular Formula: HNaS Molecular Weight: 56.06 EINECS Number: 240-778-0 Solubility: Soluble in H2O, EtOh, ether Form: Solid Color: off white Odor: Rottengegsodor Water Solubility: 620g/L (20Chemicalbook º C) Sensitivity: Moisture Sensitive&Hygroscopic Stability: Stable, but hygroscopic. Flammable solid. May spontaneously ignite in air.