title: Esters of para-aminobenzoic acid in cosmetics. Identification and dosage within sun-creams.
abstract: Synopsis A method is presented for the identification and determination by T.L.C. and G.L.C. of esters of para-aminobenzoic acid with a free amine function and of local anaesthetics, prohibited in cosmetic products, in accordance with the cosmetic directive 76/768/EEC. In a commercial product, nominally supplied as para-aminobenzoic monoglyceryl ester (authorised in sun-creams in accordance with the EEC directive) other phenyl groups with para substitution were identified by means of T.L.C. and N.M.R. spectroscopy; among them, the para-aminobenzoic ethyl ester. G.L.C. enables a quantitative determination of these substances.
authors.affiliation: Ministère de la Santé publique, Institut d'Hygiène et d'Epidémiologie, Departement Pharmatoxicologie, 14 rue J. Wytsman 1050, Bruxelles.
authors.forename: M O
authors.initials: MO
authors.lastname: Schmitz-Masse
authors.forename: M
authors.initials: M
authors.lastname: Herpol-Borremans
authors.forename: F
authors.initials: F
authors.lastname: Parmentier