H₂SO₄H2SO498.0790 g·mol⁻¹
Molar mass98.079 g·mol⁻¹calc 98.072 • Atomic weights: CIAAW 2021 (conventional atomic weights)
FormulaH₂SO₄H2SO4
Classacid • covalentliquid
| Element | Count | Mass (g/mol) | Mass % |
|---|---|---|---|
| H | 2 | 2.016 | 2.06% |
| S | 1 | 32.060 | 32.69% |
| O | 4 | 63.996 | 65.25% |
Physical properties
- State at STP
- liquid
- Density
- 1.84 g·cm⁻³ (liquid (98%) at 20 °C, 1 atm)
- Melting point
- 283.15 K (1 atm (98%))
- Boiling point
- 610 K (1 atm (azeotrope ~98%))
Structure & bonding
Tetrahedral sulfate core with two OH groups. Strong diprotic acid; dehydrating.
Occurrence & preparation
Contact process: sulfur to SO3 then hydration.
Uses
- Fertilizer production
- Lead-acid batteries
Safety
Highly corrosive — causes severe burns. Always add acid to water.
Consult current SDS. — consult current SDS before handling.