Benzoic Acid = Asam benzoat
AdvertisementBenzoic acid, C7H6O2 (or C6H5COOH), is a colorless crystalline solid and the simplest aromatic carboxylic acid. The name derived from gum benzoin, which was for a long time the only source for benzoic acid. This weak acid and its salts are used as a food preservative. Benzoic acid is an important precursor for the synthesis of many other organic substances.
| Other names | Carboxybenzene, E210, dracylic acid |
| Identifiers | |
|---|---|
| CAS number | 65-85-0 |
| PubChem | |
| KEGG | |
| MeSH | |
| ChEBI | |
| RTECS number | DG0875000 |
| SMILES | |
| InChI | |
| Beilstein Reference | 636131 |
| Gmelin Reference | 2946 |
| ChemSpider ID | |
| 3DMet | |
| Properties | |
| Molecular formula | C6H5COOH |
| Molar mass | 122.12 g/mol |
| Appearance | Colourless crystalline solid |
| Density | 1.32 g/cm3, solid |
| Melting point | 122.4 °C (395 K) |
| Boiling point | 249 °C (522 K) |
| Solubility in water | Soluble (hot water) 3.4 g/l (25 °C) |
| Solubility in THF, ethanol, methanol | THF 3.6 M, ethanol 2.4 M, methanol 2.9 M [1] |
| Acidity (pKa) | 4.21 |
| Structure | |
| Crystal structure | Monoclinic |
| Molecular shape | planar |
| Dipole moment | 1.72 D in Dioxane |
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