Essential details
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Product Introduction
| Parameter Category | Parameter Name | English Value/Specification |
|---|---|---|
| Basic Identification | Chemical Name | 1,2,4-Benzenetriol; Benzene-1,2,4-triol; Hydroxyhydroquinone; 4-Hydroxycatechol |
| Abbreviation | 1,2,4-BTO; HTQ | |
| CAS Registry Number | 533-73-3 | |
| EINECS/EC Number | 208-575-1 | |
| Molecular Formula | C₆H₆O₃ | |
| Molecular Weight | 126.11 g/mol | |
| IUPAC Name | 1,2,4-Trihydroxybenzene | |
| Chemical Structure | Benzene ring with hydroxyl (-OH) groups at positions 1, 2, and 4 | |
| Physicochemical Properties | Appearance | White to light brown crystalline powder or needles |
| Melting Point | 140-143 °C (sublimes at this temperature) | |
| Boiling Point | 309-334.5 °C at 760 mmHg | |
| Density (20 °C) | 1.45-1.488 g/cm³ | |
| Water Solubility (25 °C) | Freely soluble (400 g/L) | |
| Solubility in Organic Solvents | Soluble in ethanol, methanol, ether, DMSO (sparingly); insoluble in chloroform, carbon disulfide | |
| pH Value (1% Aqueous Solution) | Acidic (approximately 3-4) | |
| pKa Value | 9.58 ± 0.10 (predicted) | |
| Vapor Pressure (25 °C) | ~0.000361 mmHg | |
| Refractive Index | 1.5627 (estimated) | |
| Flash Point | 164.3 °C | |
| Stability | Air-sensitive; light-sensitive; should be stored in dark, inert atmosphere |
