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4-Methylbenzoic acid

4-Methylbenzoic acid
IUPAC name 4-Methylbenzoic acid
Identifiers
CAS number [99-94-5]
EINECS number 202-803-3
SMILES CC1=CC=C(C=C1)C(=O)O
Properties
Molecular formula CH3C6H4COOH
Molar mass 136.15 g/mol
Melting point

177-180 °C
Boiling point

274-275 °C
Thermochemistry
Std enthalpy of
formation ΔfHo298		 -429 kJ/mol
Std enthalpy of
combustion ΔcHo298		 3862 kJ/mol
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox 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.

See also

References


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