3,5-Dihydroxybenzoic acid (α-resorcylic acid) is a dihydroxybenzoic acid. It is a colorless solid.
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| Names | |
|---|---|
| Preferred IUPAC name 3,5-Dihydroxybenzoic acid | |
| Other names α-Resorcylic acid | |
| Identifiers | |
3D model (JSmol) | |
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.002.482 |
| EC Number |
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PubChem CID | |
| UNII | |
CompTox Dashboard (EPA) | |
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| Properties | |
| C7H6O4 | |
| Molar mass | 154.121 g·mol−1 |
| Melting point | 235.3 °C (455.5 °F; 508.4 K)[2] |
| Acidity (pKa) | 4.04[1] |
| Hazards | |
| GHS labelling: | |
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| Warning | |
| H315, H319, H335 | |
| P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |
| Related compounds | |
Related compounds | Gallic acid; 4-Hydroxybenzoic acid; Phloroglucinol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Preparation and occurrence
It is prepared by disulfonation of benzoic acid followed by hydrolysis of the disulfonate.[3]
It is a metabolite of alkylresorcinols, first identified in human urine[4] and can be quantified in urine[5] and plasma,[6] and may be an alternative, equivalent biomarker of whole grain wheat intake.[7]
References
Cited sources
- Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. ISBN 9781498754293.