1661. Calcium Citrate

Nomenclature

CAS number: 813-94-5
2-Hydroxy-1,2,3-propanetricarboxylic acid calcium salt (2:3).
C12H10Ca3O14; mol wt 498.43.
C 28.92%, H 2.02%, Ca 24.12%, O 44.94%.
Ca3(C6H5O7)2.

Description and references

Prepn from citrus fruit: Cole, US 2389766 (1945 to California Fruit Growers Exchange). Use in foods: R. Labin-Goldscher, S. Edelstein, Food Technol. 50, 96 (1996). Bioavailability compared with calcium carbonate: K. Sakhaee et al., Am. J. Ther. 6, 313 (1999). Clinical effect on bone density: L. A. Ruml et al., ibid. 303; on serum lipid concentrations: I. R. Reid et al., Am. J. Med. 112, 343 (2002).

Derivative

Tetrahydrate.

Nomenclature

CAS number: 5785-44-4
Calcimax (Gador); Citracal (Mission Pharmacal).

Properties

Odorless powder. Loses most of its water at 100° and all at 120°. Sol in 1050 parts cold water; somewhat more sol in hot water. Insol in alcohol.

Use

In foods as calcium fortifier; as anticaking agent in dry mixes.

Therapeutic Category

Calcium supplement.

Keywords

Replenishers/Supplements; Calcium