Cadmium Sulphate
| Formula | Cd3O12S3*8H2O |
| Chemical formula | 3CdSO4*8H2O |
| Molar mass | 769.51 g/mol |
| CAS number | 7790-84-3 |
| HS Code | 28332910 |
| EC number | 233-331-6 |
| Storage | Without limitation |
| RTECS | EV2850000 |
| SDS | available |
| R phrase | R 45-46-60-61/E25-E26 |
| S phrase | S 53-45-60-61 |
| Odour | odourless |
| Form | solid |
| Color | colourless to white |
| p H value | 3.0-6.0 (50 g/l 20°c) |
| Assay | 98.0 – 102.0 | % | |
| Description | Conforms | ||
| Identification | Conforms | ||
| Insoluble matter | ≤ | 0.005 | % |
| p H value | 3.0 – 6.0 | ||
| Chloride | 0.001 | % | |
| Total nitrogen | ≤ | 0.001 | % |
| Calcium | ≤ | 0.005 | % |
| Copper | ≤ | 0.001 | % |
Cadmium sulphate is an inorganic compound that appears as a white crystalline solid and is commonly used in electroplating, pigments, and laboratory reagents. It is known for its toxicity and its applications in specific industrial processes.
🏭⚗️ Production
Cadmium sulphate is typically produced by dissolving cadmium metal, cadmium oxide, or cadmium carbonate in dilute sulfuric acid. The resulting solution is then evaporated to crystallize cadmium sulphate in its hydrated form.
🔬 Properties
Cadmium sulphate is a white, water-soluble crystalline compound with the chemical formula CdSO₄. Its molar mass is approximately 208.47 g/mol (anhydrous form). It commonly exists as a monohydrate or octahydrate. The compound is stable under normal conditions but decomposes when strongly heated, releasing toxic cadmium fumes.
🧪 Applications
Cadmium sulphate is primarily used in electroplating baths for cadmium metal coatings, which provide corrosion resistance. It is also used as a precursor for cadmium-based pigments, in fluorescence screens, and in some types of batteries. In analytical chemistry, it serves as a reagent in specific tests and syntheses.
⚠️ Safety
Cadmium sulphate is highly toxic and classified as a carcinogen. Inhalation, ingestion, or prolonged skin contact can cause serious health effects, including kidney damage and cancer. It should be handled with extreme care using protective equipment and under proper ventilation. Waste containing cadmium must be disposed of following hazardous material regulations.
