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Sodium stannate
Molecular formula: NaSnO3•3H2O Molecular weight: 266.73
white crystal or powder.
Uses: as fire retardant, weighting agent and mordant of textiles, also can be used for making glass, ceramic, plating of alkaline tin, copper tin alloy and zinc tin alloy, etc.
| Standard quality of product | ||||||
| Standard name | Sn | Free alkali | Chloride | Water-insolubles | Pb | As |
| Standard values (%) | ≥42 | ≤3.0 | ≤0.01 | ≤0.05 | ≤0.001 | ≤0.001 |