Na₂SO₄Na2SO4142.0400 g·mol⁻¹
Molar mass142.040 g·mol⁻¹calc 142.036 • Atomic weights: CIAAW 2021 (conventional atomic weights)
FormulaNa₂SO₄Na2SO4
Classsalt • ionicsolid
| Element | Count | Mass (g/mol) | Mass % |
|---|---|---|---|
| Na | 2 | 45.980 | 32.37% |
| S | 1 | 32.060 | 22.57% |
| O | 4 | 63.996 | 45.06% |
Physical properties
- State at STP
- solid
- Density
- 2.66 g·cm⁻³ (solid at 20 °C, 1 atm)
- Melting point
- 1157 K (1 atm)
- Boiling point
- 1708 K (decomposes)
Structure & bonding
2 Na+ with tetrahedral SO42-. Decahydrate (Glauber salt) with water.
Occurrence & preparation
Natural mineral thenardite; by-product of rayon manufacture.
Uses
- Paper pulping
- Glass
Safety
Low hazard; dust irritates.
Consult current SDS. — consult current SDS before handling.