Magnesium Citrate, E345, CAS no.7779-25-1, the Magnesium salt of Citric Acid, white powder, soluble in water. Magnesium Citrate manufacturing process via chemical synthesis, magnesium carbonate and citric acid as raw materials. Along with other citrics, such as Sodium Citrate, Calcium Citrate and Potassium Citrate, used as acidity regulator and preservative in food and beverage. Magnesium Citrate is also a source of magnesium used in food, beverage, and in nutritional supplement applications. Magnesium Citrate also used as a pore cleanser in skin care products and a fertilizer in plant food.
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Magnesium Citrate powder Specification
Appearance White or almost white, fine, slightly hygroscopic powder
Solubility Soluble in water, practically insoluble in ethanol (96 %). It dissolves in dil. HCl.
Identification :
A. Reaction of citrates
B. Reaction of magnesium
C. pH
D. Loss on drying Shall pass the test
Shall pass the test
7.0 â?? 8.5
Max. 3.5 %
Appearance of solution Clear and not more intensely coloured than reference solutions Y7 or BY6
pH 6.0 8.5
Oxalates Max. 280 ppm
Sulphates Max. 0.2 %
Calcium Max. 0.2 %
Iron Max. 100 ppm
Heavy metals Max. 10 ppm
Loss on drying Max. 3.5 %
Assay as Magnesium (On dried substance) 15.0 % 16.5 %
