Sodium stannate Na2SnO3·3H2O
Name: Sodium stannate
CAS No.: 12058-66-1
Molecular formula: Na2SnO3·3H2O
Molecular weight: 266.72
Putity: Sn-42 and Sn-36.5
Use: It is used for alkaline tin plating, copper plating, tin-aluminum alloy plating, etc., as a fire retardant, weighting agent and mordant for textiles. It can also be used in the glass and ceramic industries.
Properties
Appearance: Colorless crystal or white powder;
Stability: It is stable and does not decompose easily at room temperature;
Solubility: Soluble in water, the solution is alkaline;
Density: The density is relatively high, about 3.95 g/cm³;
Melting point: About 1000°C
Specification
Name | Specification | Sn≥ | Impurities，≤ | ||||||
Pb | Sb | As | Fe | Free base(NaOH) | Nitrate (NO₃) | Alkali insoluble matter | |||
Na2SnO3.3H₂O | Sn-42 | 42 | 0,0020 | 0,0025 | 0,0010 | 0.02 | 3.5 | 0.1 | 0.1 |
Na2SnO3.3H₂O | Sn-36.5 | 36.5 | 0.0020 | 0.0020 | 0.0020 | 0.02 | 4.5 | 0.2 | 0.2 |