| CAS No. | 38785-33-0 |
| Molecular Formula | HO7Si2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including monoSodium bissilicate dihydrate.
monoSodium bissilicate dihydrate (CAS 38785-33-0), molecular formula HO7Si2NaH2O and molecular weight 210.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an inorganic composition, monoSodium bissilicate dihydrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 210.18 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 | HO7Si2 5*Na H2O |
| Molecular Weight | 210.18 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1968 |