4409-98-7 Dipotassium phthalate 1,2-Benzenedicarboxylic acid, potassium salt (1:2) 1,2-Benzenedicarboxylic acid, dipotassium salt EINECS 224-561-8 Phthalic acid, dipotassium salt CAS 4409-98-7
| CAS No. | 4409-98-7 |
| Molecular Formula | C8H10O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4409-98-7 Dipotassium phthalate 1,2-Benzenedicarboxylic acid, potassium salt (1:2) 1,2-Benzenedicarboxylic acid, dipotassium salt EINECS 224-561-8 Phthalic acid, dipotassium salt (CAS 4409-98-7), molecular formula C8H10O4K and molecular weight 209.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4409-98-7 Dipotassium phthalate 1,2-Benzenedicarboxylic acid, potassium salt (1:2) 1,2-Benzenedicarboxylic acid, dipotassium salt EINECS 224-561-8 Phthalic acid, dipotassium salt (C8H10O4K) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 209.26 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 4409-98-7 Dipotassium phthalate 1,2-Benzenedicarboxylic acid, potassium salt (1:2) 1,2-Benzenedicarboxylic acid, dipotassium salt EINECS 224-561-8 Phthalic acid, 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 | C8H10O4 2*K |
| Molecular Weight | 209.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Dipotassium Standards
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- 22387-03-7 Dipotassium hydrogen (~2~H)phosphate DTXSID90628414 (CAS 22387-03-7)
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