1584. Butylparaben

Nomenclature

CAS number: 94-26-8
4-Hydroxybenzoic acid butyl ester; n-butyl p-hydroxybenzoate; Butyl Chemosept; Butyl Parasept; Tegosept B.
C11H14O3; mol wt 194.23.
C 68.02%, H 7.27%, O 24.71%.

Description and references

Prepn of calcium and magnesium salts: Engels, Weijlard, US 2046324 and US 2056176 (both 1936 to Merck & Co.). Prepn of analogous derivatives: See ethyl-, methyl- and propylparaben.

Chemical structure

Properties

Crystalline powder, mp 68-69°. Very slightly soluble in water (1:6500), glycerin; freely sol in acetone, alc, ether, chloroform, propylene glycol. Preserve in well-closed containers.

Derivative

Calcium salt.
C22H26CaO6; mol wt 426.52.
C 61.95%, H 6.14%, Ca 9.40%, O 22.51%.

Properties

Cryst powder. Soly in water: approx 1:125.

Derivative

Magnesium salt.
C22H26MgO6; mol wt 410.74.
C 64.33%, H 6.38%, Mg 5.92%, O 23.37%.

Properties

Cryst powder. Soly in water: approx 1:110.

Use

Pharmaceutic aid (antifungal). Preservative in foods.