4-Methylbenzoic acid

Chembox new
Name = 4-Methylbenzoic acid
ImageFile = 4-Methylbenzoic_acid.png ImageSize = 80px
ImageName = 4-Methylbenzoic acid
IUPACName = 4-Methylbenzoic acid
Section1 = Chembox Identifiers
CASNo = 99-94-5
EINECS = 202-803-3
SMILES = CC1=CC=C(C=C1)C(=O)O
Section2 = Chembox Properties
Formula = CH₃C₆H₄COOH
MolarMass = 136.15 g/mol
MeltingPt = 177-180 °C
BoilingPt = 274-275 °C
Density =
Section4 = Chembox Thermochemistry
DeltaHf = -429 kJ/mol
DeltaHc = 3862 kJ/mol

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.

ee also

*o-Toluic acid
*m-Toluic acid

References