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Sodium pyrophosphate
Molecular formula: Na4P2O7
Properties: white powder. Soluble in water, insoluble in ethanol.
Density: 2.45
mp: 890°C
pH (1% aq. solution): 9.9-10.7
| Purity ≥ | 99.0% |
| Solution reaction | pass |
| Clarifying degree test | pass |
| Non-volatile substances % ≤ | 0.005 |
| Chloride(Cl) % ≤ | 0.001 |
| Sulfate(SO4) % ≤ | 0.025 |
| Phosphate(PO4) % ≤ | 0.3 |
| Fe % ≤ | 0.001 |
| Heavy metal(Pb) % ≤ | 0.001 |
| As % ≤ | 0.00005 |
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