Toluic Acid
Title: Toluic Acid
CAS Name: Methylbenzoic acid
Molecular Formula: C8H8O2
Molecular Weight: 136.15
Percent Composition: C 70.57%, H 5.92%, O 23.50%
Literature References: Prepn of m- and o-forms by oxidation of corresponding xylene: Toland, US 2903480 (1959 to California Res. Corp.); Hay et al., J. Org. Chem. 25, 616 (1960). Prepn of p-form by reaction of p-tolyldiazonium tetrafluoroborate with nickel carbonyl and acetic acid: Clark, Cookson, J. Chem. Soc. 1962, 686; by oxidation of p-xylene: Taves, US 3030413 (1962 to Hercules Powder). Manuf of p-form from toluene: Braunworth, US 3046305 (1962 to Pure Oil).
Derivative Type: m-Toluic acid
Properties: Prisms from water, mp 111-113°, bp 263°. Sublimes. Sol in 1170 parts water at 15°, 60 parts boiling water; very sol in alcohol, ether.
Melting point: mp 111-113°
Boiling point: bp 263°
Derivative Type: o-Toluic acid
Properties: Crystals, mp 107-108°; bp 258-260°; volatile with steam. Slightly sol in cold water; sol in 35 parts boiling water; very sol in alcohol.
Melting point: mp 107-108°
Boiling point: bp 258-260°
Derivative Type: p-Toluic acid
Properties: Crystals, mp 180-181°; bp 274-275°. Sparingly sol in hot water; very sol in alcohol, ether, methanol.
Melting point: mp 180-181°
Boiling point: bp 274-275°

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