... .Trimethyl Amine,%: 0.10 max.Loss on drying,%: 0.5 max.Residue on ignition,%: 0.20 max.Heavy metals,ppm: ... ,4-dioxan: passFormulation: 75% Liquid, 60% powder is availableApplications: Choline is one kind of vitamin B group, it is helpful to the lipometabolism ... and direct sunlight. Store in cool, dry and ventilated place. Choline Chloride