Calcium sulfite CAS 10257-55-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 10257-55-3 |
| Molecular Formula | H2O3S Ca |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Calcium sulfite (CAS 10257-55-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: H2O3S Ca. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | H2O3S Ca |
| Molecular Weight | 122.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1959 |
| Sulfur Atoms | 1 |
Related Calcium Standards
Recommended Standards
- 5-Fluoro-2-azaspiro[3.3]heptane (CAS 1330766-18-1)
- Bromoethane-1,1-d2 (CAS 3652-84-4)
- 2-(3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazin-2-yl)acetohydrazide (CAS 175202-65-0)
- Reversan (CAS 313397-13-6)
- N-(4-Methylthiazol-2-yl)-4-(1H-pyrrol-1-yl)butanamide (CAS 1257548-53-0)
- 2-(Difluoromethyl)-4-methoxy-6-methylpyridine-3-sulfonamide (CAS 1805198-92-8)
- Semaglutide impurity 97 (CAS CATO-C4X-222697)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com