p-Toluic acid
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| Names | |||
|---|---|---|---|
| Preferred IUPAC name
4-Methylbenzoic acid | |||
| Other names
para-toluic acid p-toluic acid para-methylbenzoic acid p-methylbenzoic acid toluene-4-carboxylic acid crithminic acid | |||
| Identifiers | |||
99-94-5  | |||
| 3D model (Jmol) | Interactive image | ||
| ChEBI | CHEBI:36635 | ||
| ChEMBL | ChEMBL21708 | ||
| ChemSpider | 7190 | ||
| ECHA InfoCard | 100.002.549 | ||
| EC Number | 202-803-3 | ||
| KEGG | C01454 | ||
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| Properties | |||
| C8H8O2 | |||
| Molar mass | 136.15 g·mol−1 | ||
| Appearance | Crystalline solid | ||
| Density | 1.06g/mL | ||
| Melting point | 180 to 181 °C (356 to 358 °F; 453 to 454 K)[1] | ||
| Boiling point | 274 to 275 °C (525 to 527 °F; 547 to 548 K)[1] | ||
| Sparingly soluble in hot water | |||
| Thermochemistry | |||
| Std enthalpy of formation (ΔfH |
-429 kJ/mol | ||
| Std enthalpy of combustion (ΔcH |
3862 kJ/mol | ||
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
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| Infobox references | |||
p-Toluic acid (4-methylbenzoic acid) is a substituted benzoic acid with the formula CH3C6H4COOH. It is an intermediate in some industrial processes for the oxidation of p-xylene to terephthalic acid which is used in the manufacture of polyethylene terephthalate. It is a white crystalline solid that is practically insoluble in water, but soluble in acetone.
See also
References
- 1 2 Merck Index, 12th Edition, 9673
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