Calcium Citrate Tetrahydrate

Calcium citrate tetrahydrate is the tricalcium salt of citric acid carrying four molecules of water of crystallisation, supplied by Nustras as a white to off-white powder, a micronised grade and a direct-granulation granular grade. It is the pharmacopoeial form of calcium citrate and a widely used source of the mineral calcium for supplements, fortification and food applications.

Calcium citrate tetrahydrate is formulated into calcium and multimineral supplements in tablets, capsules, chewables and powders, into nutritional premixes, into fortified foods, dairy alternatives and beverages, and into food applications where calcium citrate also serves as an acidity regulator, firming agent or sequestrant.

The material is a white or off-white powder. CAS number 5785-44-4, molecular formula C12H10Ca3O14·4H2O, molecular weight 570.5. Identity is confirmed by infrared spectroscopy and calcium is assayed by complexometric titration; the material is standardised to specification. Heavy-metal and microbial limits are supplied to specification and confirmed on each lot's certificate of analysis.

Nustras supplies calcium citrate tetrahydrate in bulk commercial quantities, in food-grade bags and fibre drums, to manufacturers and formulators internationally, with a certificate of analysis, specification sheet and country-of-origin documentation on every lot. Calcium citrate is a permitted calcium source and food additive in major markets; buyers confirm the permitted level for their application. Contact us for grade, pricing per kilogram and lead time.