Calcium oxalate hydrate CAS 5794-28-5
| CAS No. | 5794-28-5 |
| Molecular Formula | C2O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Calcium oxalate hydrate.
Calcium oxalate hydrate (CAS 5794-28-5) is a high-purity analytical reference standard with the molecular formula C2O4CaH2O and a molecular weight of 146.11 g/mol.
Calcium oxalate hydrate (C2O4CaH2O) contains a carboxylic acid group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C2O4 Ca H2O |
| Molecular Weight | 146.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
Related Calcium Standards
Recommended Standards
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- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
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