Patent ID: 6800263
Filing Date: 2004-10-05
Classification: C01D

Abstract:
Non-caking salt compositions wherein the salt is predominantly sodium chloride comprising at least one metal complex of mesotartaric acid or a mixture of hydroxypolycarboxylic acids wherein at least 5% by weight of the hydroxypolycarboxylic acids is mesotartaric acid and wherein the metal is iron, titanium, and/or chromium, and wherein the compositionsare essentially nitrogen-free, comprise an effective amount of the metal complexes of mesotartaric acid or of a mixture of hydroxypolycarboxylic acids wherein at least 5% by weight of the hydroxypolycarboxylic acid is mesotartaric acid, with the molar ratio between metal and hydroxypolycarboxylic acid being from 0.2 to 10, and have a pH of 1 to 10, and optionally contain a pH buffering agent.