p-Toluic acid
Names | |
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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 | |
ChEBI | CHEBI:36635 |
ChEMBL | ChEMBL21708 |
ChemSpider | 7190 |
EC number | 202-803-3 |
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Jmol-3D images | Image |
KEGG | C01454 |
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Properties | |
Molecular formula |
C8H8O2 |
Molar mass | 136.15 g·mol−1 |
Appearance | Crystalline solid |
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 noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
verify (what is: / ?) | |
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
- ↑ 1.0 1.1 Merck Index, 12th Edition, 9673