Stannous Oxide
Tin(II) Oxide, Tin Monoxide, SnO.
- CAS
- 21651-19-4
- EC
- 244-499-5
- Sectors
- Electronics & Solar PV, Automotive
Stannous Oxide (CAS 21651-19-4) is an inorganic metal oxide supplied as a blue-black or black powder, available in Electronic Grade and Technical Grade at 99% purity, and used as a precursor for tin-based industrial salts, lithium-ion battery electrodes, and glass surface treatments. It is insoluble in water but highly reactive with acids, serving as a critical precursor for various tin-based industrial salts.
The material boasts a high Purity of 99%, making it essential for the manufacturing of lithium-ion battery electrodes and glass surface treatments. Its controlled Particle Size ensures optimal dispersion in ceramic and electronic paste formulations.
As a functional pigment and coating agent, it provides superior thermal stability and electrical conductivity in specialized industrial applications. It is a vital component in the production of Specialty Chemicals used in the plating and glass industries.
Typical Properties
| Molecular formula | OSn |
|---|---|
| Molecular weight | 134.71 g/mol |
| Appearance | black crystals with a characteristic odour |
| Form | powder |
| Color | Blue-black |
| Melting point | 1080 °C |
| Density | 6.45 g/cm³ |
| Water solubility | Insoluble in water, and alcohol. |
| GHS signal word | Danger · Irritant / harmful, Health hazard |
| HS code | 28259085 |
| Grades available | Electronic Grade, Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Stannous Oxide
Applications
- Electroplating: Used as a primary source of tin in acidic electroplating baths for the electronics and automotive sectors.
- Battery Technology: Employed as an anode material component in advanced rechargeable batteries to improve energy density.
- Glass & Ceramics: Acts as an opacifier and surface treatment agent to enhance the optical and structural properties of glass.
Safety & Risks
Classified as STOT RE 2 (Lungs) and Aquatic Chronic 4. Ensure use of N95 Respirator and Chemical Goggles to prevent dust inhalation.
Packaging
25 kg Steel Drums, 50 kg Fiber Drums, and small-batch vacuum packaging.