4-Nitrophenol Sodium Salt Dihydrate CAS 66924-59-2
| CAS No. | 66924-59-2 |
| Molecular Formula | C6H4NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Nitrophenol Sodium Salt Dihydrate (CAS 66924-59-2), a certified reference material (molecular formula C6H4NO3NaH2O, MW 179.11 g/mol) for analytical method development and quality control.
The molecular framework of 4-Nitrophenol Sodium Salt Dihydrate (C6H4NO3NaH2O) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 4-Nitrophenol Sodium Salt 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 | C6H4NO3 Na 2*H2O |
| Molecular Weight | 179.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Related Nitrophenol Standards
- 5-Ethyl-2-nitrophenol (CAS 101664-28-2)
- 4-Nitrophenol 15N (CAS 103427-15-2)
- 4-Methyl-2-Nitrophenol (CAS 119-33-5)
- 3-Methyl-5-nitrophenol (CAS 127818-58-0)
- 2-Methyl-6-nitrophenol (CAS 13073-29-5)
- 3-Methyl-4-Nitrophenol (CAS 2581-34-2)
- 2-Ethyl-4-nitrophenol (CAS 34105-70-9)
- 4-Benzyl-2-nitrophenol (CAS 37021-63-9)
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