Calcium citrate tetrahydrate
What is Calcium citrate tetrahydrate?
Calcium citrate tetrahydrate (CAS 5785-44-4) is a calcium salt of citric acid used as a mineral supplement, buffering agent and food additive. Also marketed as Calcium Citrate USP.
Where is Calcium citrate tetrahydrate used?
- Food and beverage: firming agent and acidity regulator
- Calcium fortification source in juices, dairy alternatives and infant formula
- Pharmaceuticals: active calcium supplement ingredient and excipient in tablet and powder dosage forms
- Water treatment: sequestering action controls scale formation and stabilises treatment chemistry
- Personal care: pH buffer and stabiliser in creams, lotions and oral care products
- It delivers bioavailable calcium while controlling pH and chelating metal ions.
Good to know: The USP designation is the most commercially prevalent and referenced in pharmaceutical and food industry procurement; the USP-grade specification supports strict compliance requirements for medicinal products.
Commercial specifications
- Bulk quantities standard for industrial buyers; smaller packaging for formulators and quality control
Other Names (Synonyms)
Calcium citrate (USP)|RefChem:1080678|tricalcium;2-hydroxypropane-1,2,3-tricarboxylate;tetrahydrate|1,2,3-Propanetricarboxylic acid, 2-hydroxy-, calcium salt (2:3), tetrahydrate|Calcium 2-hydroxypropane-1,2,3-tricarboxylate tetrahydrate|1,2,3-Propanetricarboxylic acid, 2-hydroxy-, calcium salt, hydrate (2:3:4)|Citric acid, calcium salt (2:3), tetrahydrate