SODIUM-PHENOL-WATER ORTHOHYDROXYMANDELATE COMPLEX, PREPARATION METHOD AND USE FOR ISOLATION OF SODIUM ORTHOHYDROXYMANDELATE

摘要

P A crystallized sodium-phenol-water orthohydroxymandelate complex, its preparation process in which phenol (P2) is introduced into an aqueous solution S at a pH between 7 and 9.5 to obtain the expected product crystallized, the aqueous solution S being such that resulting from the reaction of phenol (P1) on glyoxylic acid in the presence of a tertiary amine and a trivalent cation, then treatment using a solution d 'an alkali hydroxide, application of this complex to the preparation of sodium orthohydroxymandelate (OHMNa), process for the preparation of the latter from the starting complex. /P