KNO₃KNO3101.1030 g·mol⁻¹
Molar mass101.103 g·mol⁻¹calc 101.102 • Atomic weights: CIAAW 2021 (conventional atomic weights)
FormulaKNO₃KNO3
Classsalt • ionicsolid
| Element | Count | Mass (g/mol) | Mass % |
|---|---|---|---|
| K | 1 | 39.098 | 38.67% |
| N | 1 | 14.007 | 13.85% |
| O | 3 | 47.997 | 47.47% |
Physical properties
- State at STP
- solid
- Density
- 2.11 g·cm⁻³ (solid at 20 °C, 1 atm)
- Melting point
- 607 K (1 atm)
- Boiling point
- 673 K (decomposes)
Structure & bonding
K+ with planar NO3-. Oxidizer due to nitrate.
Occurrence & preparation
Mined as niter; produced by reaction of KCl with NaNO3.
Uses
- Fertilizer
- Food preservation (regulated)
Safety
Oxidizer — keep away from combustibles.
Consult current SDS. — consult current SDS before handling.