Potassium 2-hydroxyethanesulfonate CAS 1561-99-5
| CAS No. | 1561-99-5 |
| Molecular Formula | C2H5O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a sulfone group, a carboxylic acid group, an ether linkage, Potassium 2-hydroxyethanesulfonate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
Potassium 2-hydroxyethanesulfonate (CAS 1561-99-5), molecular formula C2H5O4SK and molecular weight 164.22 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C2H5O4S K |
| Molecular Weight | 164.22 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) | 0.5 |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
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