Calcium Sulfide CAS#20548-54-3
Calcium sulfide features low water solubility and is insoluble in alcohol. Upon contact with acids, it produces hydrogen sulfide gas. This solid substance ranges in color from pale yellow to light gray and carries a bitter taste. It is hygroscopic; when exposed to humid air, it emits the characteristic odor of hydrogen sulfide.
CALCIUM SULFIDE Chemical Properties
| Melting point | 2000 °C |
| Density | 2.6 |
| Refractive index | 2.12 |
| Solubility | Slightly soluble in H2O; insoluble in ethanol |
| Form | Powder |
| Specific Gravity | 2.5 |
| Color | White |
| Water Solubility | Slightly soluble in water. Insoluble in alcohol. |
| Sensitive | Moisture Sensitive |
| Crystal Structure | NaCl type |
| Crystal system | Cube |
| Merck | 14,1707 |
| Space group | Fm3m |
| Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.569080.569080.569089090900.1843 |
| CAS DataBase Reference | 20548-54-3(CAS DataBase Reference) |
| EPA Substance Registry System | Calcium sulfide (CaS) (20548-54-3) |
Product Application of Calcium Sulfide
Calcium sulfide is employed to manufacture luminous paints and thiourea. It also finds use as a food preservative, lubricant filler, and depilating agent for the leather sector. Besides, it can act as an analytical reagent and raw material for phosphor products. High‑purity grades are widely adopted within the electronics industry.
