| CAS No. | 22798-10-3 |
| Molecular Formula | C4H4O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
CATO supplies Disodium DL-malate hydrate (CAS 22798-10-3), a certified reference material (molecular formula C4H4O5NaH2O, MW 173.08 g/mol) for analytical method development and quality control.
Owing to a carbohydrate-derived structure, Disodium DL-malate hydrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 173.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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.
| Molecular Formula | C4H4O5 2*Na H2O |
| Molecular Weight | 173.08 g/mol |
| Purity | >95% |
| 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.) | 1963 |