| Valeric acid[1] | |
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Pentanoic acid |
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Other names
Valeric acid |
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| Identifiers | |
| CAS number | 109-52-4 |
| ChEMBL | CHEMBL268736 |
| RTECS number | YV6100000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C5H10O2 |
| Molar mass | 102.13 g/mol |
| Appearance | Colorless liquid |
| Density | 0.930 g/cm³, liquid |
| Melting point |
−34.5 °C |
| Boiling point |
186–187 °C |
| Solubility in water | 4.97 g/100 ml (25 °C) |
| Acidity (pKa) | 4.82 |
| Hazards | |
| R-phrases | R34 R52/53 |
| S-phrases | S26 S36 S45 S61 |
| Main hazards | irritant |
| Flash point | 86 °C |
| Related compounds | |
| Related compounds | Butyric acid Ethyl valerate Pentyl pentanoate |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Valeric acid, or pentanoic acid, is a straight-chain alkyl carboxylic acid with the chemical formula C5H10O2. Like other low-molecular-weight carboxylic acids, it has a very unpleasant odor. It is found naturally in the perennial flowering plant valerian (Valeriana officinalis), from which it gets its name. Its primary use is in the synthesis of its esters. Volatile esters of valeric acid tend to have pleasant odors and are used in perfumes and cosmetics. Ethyl valerate and pentyl valerate are used as food additives because of their fruity flavors.
Valeric acid has a similar structure to both GHB and the neurotransmitter GABA. It differs from valproic acid simply by lacking a 3-carbon side-chain.
Valeric acid can cause irritation if it comes into contact with the skin, eyes, or mucous membranes, but otherwise causes little harm because it tends not to vaporize at room temperature unless it is in its pure glacial form. It is, however, toxic to aquatic life and so should not be disposed of into drains without first diluting the acidic solution.
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