4-Methylbenzoic acid
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| 4-Methylbenzoic acid | |
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| Chemical name | 4-Methylbenzoic acid |
| Chemical formula | CH3C6H4COOH |
| Molecular mass | 136.15 g/mol |
| Melting point | 177-180 °C |
| Boiling point | 274-275 °C |
| Density | ? g/cm³ |
| CAS number | [99-94-5] |
| EINECS number | 202-803-3 |
| SMILES | CC1=CC=C(C=C1)C(=O)O |
| Thermodynamic data | |
| Standard enthalpy of formation ΔfH°solid |
-429 kJ/mol |
| Standard enthalpy of combustion ΔcH°solid |
3862 kJ/mol |
| Heat capacity Cp | 169.0 J.K–1.mol–1 |
| Disclaimer and references | |
4-Methylbenzoic acid, also known as p-toluic acid or crithminic acid (obsolete) is a substituted benzoic acid. It is an intermediate in some industrial processes for the oxidation of p-xylene to terephthalic acid which is used in the manufacture of PET. It is a white crystalline solid that is practically insoluble in water, but soluble in acetone.
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