Stannous sulfate
CAS 7488-55-3
EC 231-302-2
Formula H2O4S.Sn
MW 214.77 g/mol
Salts & Minerals ElectronicsPrinting & PackagingTextile, Leather & PaperPlastics & PolymersMining & Metals CatalysisSurface Modification & Wetting
Description
Stannous sulfate (CAS 7488-55-3, EC 231-302-2), also known as tin(II) sulfate or tin sulphate, is an inorganic tin salt with the formula SnSO4. It carries no E-code designation and is not classified as a food additive. It is commercially available under several trade names across European chemical markets.
In electroplating, stannous sulfate serves as the primary tin ion source in acid sulfate bath formulations, depositing uniform tin coatings onto metal substrates for electronics and packaging applications. In textile and leather processing, it acts as a mordant and surface modifier, anchoring dyes and treatment agents to fibres through coordination with functional groups on the substrate surface.
Stannous sulfate is supplied as an off-white solid in technical and high-purity grades, with packaging typically ranging from 25 kg bags to bulk quantities. It falls under HS code 28332990 and is subject to REACH registration requirements within the European Union. Buyers should request a current SDS and certificate of analysis confirming tin content and sulfate purity.
In electroplating, stannous sulfate serves as the primary tin ion source in acid sulfate bath formulations, depositing uniform tin coatings onto metal substrates for electronics and packaging applications. In textile and leather processing, it acts as a mordant and surface modifier, anchoring dyes and treatment agents to fibres through coordination with functional groups on the substrate surface.
Stannous sulfate is supplied as an off-white solid in technical and high-purity grades, with packaging typically ranging from 25 kg bags to bulk quantities. It falls under HS code 28332990 and is subject to REACH registration requirements within the European Union. Buyers should request a current SDS and certificate of analysis confirming tin content and sulfate purity.
Physical Properties
| Melting Point | 360 °C (decomp) |
| Density | 1.35 g/cm³ |
| Appearance | off-white solid |
| Color | White to off-white |
| Odor | Odorless |
| Form | Solid |
| Water Solubility | 330 g/L (20 ºC) |
| Vapor Pressure | 0Pa at 20℃ |
| pH | 1.6 (50g/l, H2O, 20℃) |
Trade & Regulatory
| HS Code | 28332990 |
| UN Number | 3260 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 8A - Combustible corrosive hazardous materials |
Other Names
Tin(II) sulfateTin sulphatesulfated’etainTIN(+2)SULFATEsulfatestanneuxTin(2+) sulfateTIN(II) SULPHATE
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Raw Materials
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