Sodium Metabisulfite CAS 7681-57-4
Purity >95%In StockPharmaceutical Standards
| CAS No. | 7681-57-4 |
| Molecular Formula | O5S2 2*Na |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Sodium Metabisulfite (CAS 7681-57-4), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: O5S2 2*Na. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | O5S2 2*Na |
| Molecular Weight | 167.11 g/mol |
| Purity | >95% |
| 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 | 2 |
Related Sodium Standards
Recommended Standards
- 2-Bromo-1-[2-(methylsulfanyl)phenyl]ethan-1-one (CAS 22165-36-2)
- N-(Piperidin-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 1073354-35-4)
- 6-Oxopiperidine-3-carboxylic Acid (CAS 22540-50-7)
- Amoxicillin EP Impurity F (CAS 126247-63-0)
- (S)-5-Amino-2-((S)-2,6-diaminohexanamido)pentanoic acid (CAS 788121-81-3)
- 2,4,5-Trifluorobenzotrifluoride (CAS 112290-07-0)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
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