- p-Toluic acid
-
p-Toluic acid 
4-Methylbenzoic acidOther namespara-toluic acid
p-toluic acid
para-methylbenzoic acid
p-methylbenzoic acid
toluene-4-carboxylic acid
crithminic acidIdentifiers CAS number 99-94-5 
ChemSpider 7190 EC number 202-803-3 KEGG C01454 ChEMBL CHEMBL21708 Jmol-3D images Image 1 - O=C(O)c1ccc(cc1)C
- InChI=1S/C8H8O2/c1-6-2-4-7(5-3-6)8(9)10/h2-5H,1H3,(H,9,10)
Key: LPNBBFKOUUSUDB-UHFFFAOYSA-N
InChI=1/C8H8O2/c1-6-2-4-7(5-3-6)8(9)10/h2-5H,1H3,(H,9,10)
Key: LPNBBFKOUUSUDB-UHFFFAOYAB
Properties Molecular formula C8H8O2 Molar mass 136.15 g mol−1 Appearance Crystalline solid Melting point 180-181 °C, 453-454 K, 356-358 °F ([1])
Boiling point 275 °C, 548 K, 527 °F ([1])
Solubility in water Sparingly soluble in hot water Thermochemistry Std enthalpy of
formation ΔfHo298-429 kJ/mol Std enthalpy of
combustion ΔcHo2983862 kJ/mol 
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)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
- ^ a b Merck Index, 12th Edition, 9673
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