Calcium citrate
CAS 813-94-5
EC 212-391-7
Formula C6H8O7.3/2Ca
MW 498.43 g/mol
Salts & Minerals Food & NutritionPersonal Care & CosmeticsPharmaceuticals & Healthcare Chelation & SequestrationpH Regulation & BufferingAntioxidant & StabilizerPreservation & Biocide
Description
Calcium citrate (CAS 813-94-5) is the calcium salt of citric acid, commercially known under trade names such as Citracal and Acicontral. It is registered under EC number 212-391-7 with the molecular formula C6H8O7.3/2Ca. No E-number designation applies to this substance in EU food additive legislation.
In food and pharmaceutical manufacturing, calcium citrate functions as a pH buffer by neutralising excess acidity through its salt-forming equilibrium, maintaining stable formulation conditions across processing temperatures. In personal care applications, it acts as a chelating agent, binding free metal ions that would otherwise catalyse oxidative degradation of active ingredients or preservative systems.
Calcium citrate is available in food-grade and pharmaceutical-grade forms, with quality benchmarks including FCC (Food Chemicals Codex) and Ph.Eur. (European Pharmacopoeia) specifications. It falls under REACH registration obligations for EU market supply. Typical packaging includes 25 kg bags, with bulk options available depending on supplier.
In food and pharmaceutical manufacturing, calcium citrate functions as a pH buffer by neutralising excess acidity through its salt-forming equilibrium, maintaining stable formulation conditions across processing temperatures. In personal care applications, it acts as a chelating agent, binding free metal ions that would otherwise catalyse oxidative degradation of active ingredients or preservative systems.
Calcium citrate is available in food-grade and pharmaceutical-grade forms, with quality benchmarks including FCC (Food Chemicals Codex) and Ph.Eur. (European Pharmacopoeia) specifications. It falls under REACH registration obligations for EU market supply. Typical packaging includes 25 kg bags, with bulk options available depending on supplier.
Physical Properties
| Appearance | white powder or white to colourless crystals |
| Odor | at 100.00?%. odorless |
| Log P | -1.721 (est) |
Trade & Regulatory
| WGK (Germany) | 1 |
Other Names
tricalcium bis(2-hydroxypropane-1,2,3-tricarboxylate)tricalcium citratecalcium citrate anhydrouscitricalCitracalAcicontral
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