308103-66-4 4,4 inverted exclamation marka-(Phenylphosphinidene)bis-benzenesulfonic acid dipotassium salt Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt CAS 308103-66-4
| CAS No. | 308103-66-4 |
| Molecular Formula | C18H31O6PS2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
308103-66-4 4,4 inverted exclamation marka-(Phenylphosphinidene)bis-benzenesulfonic acid dipotassium salt Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt (CAS 308103-66-4), molecular formula C18H31O6PS2KH2O and molecular weight 495.65 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, 308103-66-4 4,4 inverted exclamation marka-(Phenylphosphinidene)bis-benzenesulfonic acid dipotassium salt Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 495.65 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.
As a certified reference material (CRM), 308103-66-4 4,4 inverted exclamation marka-(Phenylphosphinidene)bis-benzenesulfonic acid dipotassium salt Bis(p-sulfonatophenyl)phenylphosphine dihydrate dipotassium salt meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H31O6PS2 2*K H2O |
| Molecular Weight | 495.65 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 2 |
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