| 7213 |
2,4-Dihydroxybenzaldehyde is an aromatic compound featuring a benzene ring substituted with two hydroxyl groups at the 2- and 4-positions and an aldehyde functional group. It is commonly used as an intermediate in organic synthesis, pharmaceuticals, dyes, and fine chemical research. The compound is typically a solid with yellow to light brown colouration and is valued for its reactivity in forming Schiff bases, phenolic derivatives, and other functionalized aromatic molecules.
Synonym: beta-resorcylaldehyde, 4-hydroxysalicylaldehyde, 4-formylresorcinol, beta-resorcaldehyde, benzaldehyde, 2,4-dihydroxy, beta-resorcinaldehyde, beta-resorcylic aldehyde, 2,4-dihydroxybenzenecarbonal, salicylaldehyde, 4-hydroxy, 4-hydroxysalicyladehyde
| Appearance | White to beige/cream solid powder or crystalline solid |
| Melting Point | ~133–138 °C (clear melt) |
| pH of Liquid, Typical (10% soln) | Not routinely specified for this solid (aqueous pH not standard) |
| Specific Gravity Approx | ~1.26–1.40 g/cm³ (solid density estimate) |
| Odor | Characteristic slight phenolic odor (not typically specified) |
| Color | White to beige/light cream (occasionally pale pink to pale brown) |
| Linear Formula | (HO)₂C₆H₃CHO |
| IUPAC Name | 2,4‑dihydroxybenzaldehyde |
| Formula Weight | 138.12 g/mol |
| percent purity | Typically ≥ 97.5–98 % |
| Physical Form | Solid (powder or crystalline) |
| Chemical Name or Material | 2,4‑Dihydroxybenzaldehyde (a dihydroxy substituted benzaldehyde) |
| Content / Assay Percent Range | ≥ 97.5 % (GC) |
Classification of the substance or mixture
GHS Label elements, including precautionary statements
Yes
Hazards not otherwise classified (HNOC) or not covered by GHS
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS). For the full text of the H-Statements mentioned in this Section, see Section 16.
Yes
Signal word :
Warrning
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