Product Description
Sodium Sulfide (Na₂S) is an inorganic chemical compound commonly supplied as flakes, granules, or solid pieces. Depending on its grade and purity, it may appear yellow to reddish-brown. It is widely used in leather processing, mineral beneficiation, chemical manufacturing, and selected wastewater treatment applications.
Sodium sulfide provides sulfide ions that participate in various industrial chemical reactions. Commercial products may differ in sodium sulfide content, iron content, moisture, and physical form according to the intended application.
Sodium sulfide Chemical Properties |
Melting point | 950 °C(lit.) |
density | 1.86 g/mL at 25 °C(lit.) |
storage temp. | Refrigerator (+4°C) |
solubility | H2O: 0.1 g/mL, clear, colorless |
form | flakes |
color | Yellow |
Specific Gravity | 1.856 |
Water Solubility | 186 g/L (20 ºC) |
Sensitive | Hygroscopic |
Crystal Structure | Reverse CaF2 type |
crystal system | Cube |
Merck | 14,8681 |
Space group | Fm3m |
Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.6540.6540.6549090900.2797 |
Dielectric constant | 5.0（Ambient） |
Stability: | Spontaneously flammable. Incompatible with acids, metals, oxidizing agents. Contact with acid liberates toxic gas. Fine dust/air mixtures are explosive. Hygroscopic. |
InChIKey | CXPWOVUZRAFMDA-UHFFFAOYSA-N |
CAS DataBase Reference | 1313-82-2(CAS DataBase Reference) |
NIST Chemistry Reference | Sodium sulfide(1313-82-2) |
EPA Substance Registry System | Sodium sulfide (1313-82-2) |
Safety Information |
Hazard Codes | C,N,Xn |
Risk Statements | 31-34-50-22 |
Safety Statements | 26-45-61-36/37/39 |
RIDADR | UN 1849 8/PG 2 |
WGK Germany | 2 |
RTECS | WE1905000 |
F | 3-8-9-23 |
TSCA | Yes |
HazardClass | 4.2 |
PackingGroup | II |
HS Code | 28301010 |
Hazardous Substances Data | 1313-82-2(Hazardous Substances Data) |
Safety and Storage
Sodium sulfide is corrosive and can release highly toxic hydrogen sulfide gas (H₂S) when it contacts acids or certain acidic materials. Avoid contact with acids, moisture where inappropriate, and incompatible chemicals. Handle only with suitable ventilation and appropriate protective equipment.
Store in tightly sealed, corrosion-resistant packaging in a cool, dry, well-ventilated area. Protect the product from moisture and keep it separated from acids and incompatible substances. Consult the product-specific Safety Data Sheet (SDS) before handling.
