4-hydroxybenzene-1-sulfonic acid dihydrate CAS 2060026-75-5
| CAS No. | 2060026-75-5 |
| Molecular Formula | C6H6O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-hydroxybenzene-1-sulfonic acid dihydrate (CAS 2060026-75-5) is a high-purity analytical reference standard with the molecular formula C6H6O4SH2O and a molecular weight of 192.19 g/mol.
The molecular framework of 4-hydroxybenzene-1-sulfonic acid dihydrate (C6H6O4SH2O) is characterized by a carbohydrate-derived structure, a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 4-hydroxybenzene-1-sulfonic acid dihydrate 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 | C6H6O4S 2*H2O |
| Molecular Weight | 192.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Sulfur Atoms | 1 |
Related hydroxybenzene Standards
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- 5-Acetyl-2-hydroxybenzene-1-sulfonyl chloride (CAS 66264-54-8)
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