p-Toluic acid

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p-Toluic acid
Skeletal formula of p-toluic acid
Ball-and-stick model of the p-toluic acid molecule
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
3D model (Jmol)
ChEBI
ChemSpider
ECHA InfoCard 100.002.549
EC Number 202-803-3
KEGG
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
-429 kJ/mol
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[edit]

References[edit]

  1. ^ a b Merck Index, 12th Edition, 9673