Cryolite (Na₃AlF₆)
| Property | Unit | Typical | Specification / Limit |
|---|---|---|---|
| Na₃AlF₆ | % | 98 | Min |
| F | % | 53 | Min |
| Ratio (3NaF/AlF₃) | – | – | 1.4 – 1.5 |
| SiO₂ | % | – | Max 0.20 |
| Fe₂O₃ | % | – | Max 0.05 |
| CaO | % | – | Max 0.15 |
| SO₃ | % | – | Max 0.07 |
| Na₂O | % | – | Max 0.35 |
| Al₂O₃ | % | – | Max 0.01 |
| P₂O₅ | % | – | Max 0.40 |
| L.O.I at 550 °C (1 hr) | % | – | Max 0.20 |
| Moisture (105–120 °C, 1 hr) | % | – | Max 20 |
| Size 10–4 mm | % | – | Max 70 |
| Size 4–1 mm | % | – | Max 10 |
| Size <1 mm | % | – | – |