Usage:DL-Malic acid can be used as an acidulant in cool drinks (including lactobacillus drinks, milk drinks, carbonated drinks, cola), frozen foods (including sherbet and ice cream), processed foods (including wine and mayonnaise). Specification: Items tested Standard Appearance White crystalline or crystalline powder Assay 99-100.5% min Heavy metal as Pb 10 ppm max As 4 ppm max Fumaric Acid 1.0% max Maleic Acid 0.05% max Water insolubles 0.10% max Residue on ignition 0.1% max