| CAS No. | 4672-40-6 |
| Molecular Formula | C3H10O6P2 |
| Molecular Weight | 204.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
(1-methyl-1,2-ethanediyl)bis-Phosphonic acid (C3H10O6P2) contains a phosphate ester group, 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.
(1-methyl-1,2-ethanediyl)bis-Phosphonic acid (CAS 4672-40-6), molecular formula C3H10O6P2 and molecular weight 204.06 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C3H10O6P2 |
| Molecular Weight | 204.06 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | -1.0 |
| CAS Registry Year (est.) | 1958 |