9931. Vanillic Acid

Nomenclature

CAS number: 121-34-6
4-Hydroxy-3-methoxybenzoic acid.
C8H8O4; mol wt 168.15.
C 57.14%, H 4.80%, O 38.06%.

Description and references

Obtained from vanillin by oxidation with silver oxide or by controlled caustic fusion: Pearl, Org. Synth. 30, 101 (1950).

Chemical structure

Properties

White, odorless needles. mp 210°. Sublimes undecomposed. Sol in 860 parts water; very sol in alc; sol in ether. Not colored by FeCl3. Its salts are freely sol in water.