calcium thiosulphate
- CAS NO.：10124-41-1
- Empirical Formula: Ca.H2O3S2
- Molecular Weight: 154.22
- MDL number: MFCD00049865
- EINECS: 233-333-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-12 09:13:37
What is calcium thiosulphate?
Chemical properties
tricl crystal(s); when dry, decomposes on standing to form a yellow crust on the surface; spontaneously decomposed at 43°C–49°C; used to treat dermatitis and jaundice caused by arsphenamine [MER06]
Purification Methods
Recrystallise it from water below 60o in a N2 atmosphere, followed by drying with EtOH and Et2O. Store it in a refrigerator. The hexahydrate can decompose spontaneously at 43-49o. Store it in a cool closed container. [Pethybridge & Taba J Chem Soc, Faraday Trans 1 78 1331 1982.]
Properties of calcium thiosulphate
| Melting point: | decomposes [CRC10] |
| Density | 1.870 |
| solubility | soluble in H2O; insoluble in ethanol |
| form | triclinic crystals |
| color | triclinic crystals, crystalline |
| Water Solubility | 100g/100mL H2O (3°C), decomposed by hot water; insoluble alcohol [MER06] [CRC10] |
| EPA Substance Registry System | Calcium thiosulfate (10124-41-1) |
Safety information for calcium thiosulphate
Computed Descriptors for calcium thiosulphate
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