Metaphosphoric Acid Potassium Salt CAS 7790-53-6
| CAS No. | 7790-53-6 |
| Molecular Formula | O3P |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Metaphosphoric Acid Potassium Salt (CAS 7790-53-6), molecular formula O3PK and molecular weight 118.07 g/mol, is a CATO reference standard with documented purity and traceability.
Metaphosphoric Acid Potassium Salt (O3PK) contains a phosphonate group. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
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.
As a certified reference material (CRM), Metaphosphoric Acid Potassium 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 | O3P K |
| Molecular Weight | 118.07 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1959 |
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Why CATO?
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