4812. p-Hydroxybenzoic Acid

Nomenclature

CAS number: 99-96-7
C7H6O3; mol wt 138.12.
C 60.87%, H 4.38%, O 34.75%.

Description and references

Prepn from p-bromophenol: Gilinan, Arntzen, J. Am. Chem. Soc. 69, 1537 (1947); from p-hydroxybenzaldehyde: Pearl, J. Org. Chem. 12, 85 (1947); from phenol + potassium ethyl carbonate: Jones, Chem. Ind. (London) 1958, 228; from potassium phenolate + CO2: GB 942418 (1963 to Inventa). A metabolic product of Penicillium patulum: Tanenbaum, Bassett, Biochim. Biophys. Acta 28, 21 (1958).

Chemical structure

Properties

Crystals, mp 213-214°. d 1.46. Soluble in about 125 parts water, freely in alcohol, slightly in chloroform; sol in ether, acetone. Practically insol in carbon disulfide. Ferric chloride does not color its aq soln.

Use

In org. syntheses; intermediate for dyes, fungicides.