Silver II sulfate
| Formula | Ag2O4S |
| Chemical formula | Ag2SO4 |
| Density | ~ 5.45g/cm3 |
| Molar mass | 311.79 g/mol |
| HS code | 28432900 |
| EC number | 233-653-7 |
| Storage | without limitation |
| CAS number | 10294-26-5 |
| SDS | available |
| R phrase | R 41 |
| S phrase | S 22-26-39 |
| Odour | odourless |
| Form | powder |
| Color | white |
| p H | 5 – 6 (5 g/l 25 °C) |
| Solubility in water | 8 g/l ( 25 °C ) |
| Melting point | 655°C |
| Thermal decomposition | >1000°C |
| Assay | ≥ | 98.5 | % |
| Description | Conforms | ||
| Solubility | Conforms | ||
| Identification | Conforms | ||
| Insoluble matter & silver chloride | 0.02 | % | |
| Substances not precipitated by | ≤ | 0.03 | % |
| hydrochloric acid | ≤ | 0.001 | % |
| Chloride | ≤ | 0.001 | % |
| Nitrate | ≤ | 0.0005 | % |
| Iron | ≤ | 0.001 | % |
Silver(II) sulfate is a rare, dark brown to black inorganic compound containing silver in the +2 oxidation state, known for its strong oxidizing properties and instability.
🏭⚗️ Production
It is prepared under controlled lab conditions by oxidizing silver(I) salts with sulfuric acid or electrochemical methods, requiring low temperatures and inert atmosphere to prevent decomposition.
🔬 Properties
The formula is AgSO₄ with molar mass ~204 g/mol. It is poorly soluble in water, sensitive to light, moisture, and heat, and decomposes to silver(I) sulfate and oxygen when heated.
🧪 Applications
Used mainly in research on high-valence silver chemistry, oxidative catalysis, and experimental battery materials due to its strong oxidizing ability, though limited by instability.
⚠️ Safety
Highly reactive and a strong oxidizer, it can cause irritation and release toxic silver fumes upon decomposition. Requires careful handling with protective gear and storage away from heat, light, and organics.
