In Stock
Calcium Citrate Tetrahydrate 21%
Category: Mineral Chelates & Salts
Ultrafine, micronized calcium citrate tetrahydrate meeting USP-NF monograph and food-grade requirements (EC 178/2002, 852/2004). The fine particle size gives fast dispersion and a smooth mouthfeel in powders, sachets, tablets, capsules, bars, gummies and dry blends. Produced by chemical synthesis (reaction, centrifugation, drying, micronizing, sieving and metal detection) under an ISO 22000 certified food-safety system valid to 24 August 2027; country of origin China. Free of the EU and FDA major allergens, gluten free, GMO free, BSE/TSE free and vegan, with no residual solvents, no sewage-sludge contact, and free of MSG, artificial flavours, colours, preservatives, yeast and rice. Not regulated for transport (DOT, ADR, IMDG, IATA). In stock in our Montréal warehouse for prompt delivery, in 15 kg packages (inner double-layer PE bags, on pallets). Certificate of analysis, specification sheet, MSDS, processing flow chart, product statements, ISO 22000 certificate and a retained sample available on request. For liquid or acidified formulations, request a trial sample first.
Key facts
| Chemical name | Calcium citrate tetrahydrate — tricalcium bis(2-hydroxypropane-1,2,3-tricarboxylate) tetrahydrate |
| Grade / standard | USP-NF; food grade (EC 178/2002, 852/2004) |
| Calcium content | ≥ 20.5% (as is) |
| Particle size | D50 ≤ 6 µm (laser particle size analyzer) |
| Manufacturing | Chemical synthesis — reaction, centrifugation, drying, mixing & micronizing, sieving, metal detection; three critical control points |
| Country of origin | China |
| Availability | Prompt delivery from Montréal warehouse |
| Packaging | 15 kg per package, inner double-layer PE bags, on pallets |
Technical Specifications
CAS 5785-44-4
Formula C12H10Ca3O14·4H2O
Mol. Weight 570.5
| Appearance | White or off-white powder |
Synonyms: Calcium citrate tetrahydrate, Calcium citrate (USP), Citracal, Calcium citrate (3:2) tetrahydrate, Calcium citrate tribasic tetrahydrate, Citric acid calcium salt (2:3) tetrahydrate, E333(iii)
Applications: Food Supplement Ingredients, Dietary Supplement Ingredients, Health Ingredients, Typical Medical Treatment Ingredients, Food Grade Ingredients
Specifications
| Item | Specification (USP-NF) | Test method |
|---|---|---|
| Appearance | White or off-white powder | Visual |
| Identification | Meets the requirements | USP-NF 2021 |
| Assay (as anhydrous, dried basis) | 97.5 – 100.5% | USP-NF 2021 |
| Calcium (as is) | ≥ 20.5% | Titration |
| Fluoride | ≤ 30 ppm | USP-NF 2021 |
| Acid-insoluble substances | ≤ 0.2% | USP-NF 2021 |
| Loss on drying (150 °C, 4 h) | 10.0 – 13.3% | USP-NF 2021 |
| Particle size, D50 | ≤ 6 µm | Laser particle size analyzer |
| Heavy metals | ||
| Heavy metals (total) | ≤ 20 ppm | USP <233> |
| Lead (Pb) | ≤ 3 ppm (customized: ≤ 0.2 ppm) | USP <251> / <233>, GFAAS |
| Arsenic (As) | ≤ 1 ppm | USP <211> / <233>, AFS |
| Cadmium (Cd) | ≤ 1 ppm | USP <233>, GFAAS |
| Mercury (Hg) | ≤ 0.1 ppm | USP <261> / <233>, AFS |
| Microbiology | ||
| Total plate count | ≤ 3,000 cfu/g | ISO / GB / USP |
| Yeast and mould | ≤ 300 cfu/g | ISO / GB / USP |
| E. coli | Negative /g | ISO / GB / USP |
| Salmonella | Negative /25 g | ISO / GB / USP |
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