Basic Information
Chemical Name: Sodium Stannate Trihydrate
Chemical Formula：Na2SnO3·3H2O
Molecular Weight：266.73
Appearance: White powder. Soluble in water, insoluble in alcohol and acetone.
Uses
Applications：Primarily used in the electroplating industry for alkaline tin and copper plating, as well as electroplating and electroless plating of tin alloys, zinc-tin alloys, and aluminum alloys.
In the textile industry, it serves as a flame retardant and weighting agent.
In the dyeing and printing industry, it acts as a mordant.
It is also utilized in the glass and ceramic industries.
Uses
Item | High-purity grade | Industry-grade(Sn-42) | |
Appearance | White powder or crystal | White powder or crystal | |
Sn, w/% | ≥ | 43.2 | 42 |
Pb, w/% | ≤ | 0.002 | 0.002 |
Sb, w/% | ≤ | 0.0025 | 0.0025 |
As, w/% | ≤ | 0.001 | 0.001 |
Fe, w/% | ≤ | 0.005 | 0.01 |
Free alkali (OH-), w/% | ≤ | 3.5 | 3.5 |
Nitrate(NO3-), w/% | ≤ | 0.1 | 0.1 |
Alkali intolerance, w/% | ≤ | 0.1 | 0.1 |
Sulfate(SO42-), w/% | ≤ | 0.01 | 0.02 |
Chloride(Cl-), w/% | ≤ | 0.02 | 0.02 |
