Calcium citrate tribasic tetrahydrate

BioUltra, ≥98.0% (calc. on dry substance, KT)

Citric acid calcium salt, Tricalcium dicitrate
Linear Formula:
Ca3(C6H5O7)2 · 4H2O
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

product line


Quality Level


≥98.0% (calc. on dry substance, KT)


Insoluble matter, passes filter test


10-14% loss on drying, 180°C, 4 h


0.1 M HCl: 0.01 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤50 mg/kg
Hg: ≤0.1 mg/kg
K: ≤500 mg/kg
Li: ≤5 mg/kg
Mg: ≤1000 mg/kg
Mn: ≤50 mg/kg
Mo: ≤5 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤1 mg/kg
Sr: ≤100 mg/kg
Zn: ≤5 mg/kg


0.01 M in 0.1 M HCl

UV absorption

λ: 260 nm Amax: 0.04
λ: 280 nm Amax: 0.03

SMILES string




InChI key


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NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Ram Sudheer Adluri et al.
Molecular and cellular biochemistry, 340(1-2), 73-80 (2010-03-10)
Calcium is an essential mineral to support bone health and serves as a major therapeutic intervention to prevent and delay the incidence of osteoporosis. Many individuals do not obtain the optimum amount of calcium from diets and depend on bioavailable...
José Manuel Quesada Gómez et al.
Clinical drug investigation, 31(5), 285-298 (2011-03-17)
The combination of calcium with vitamin D (vitamin D(3) [colecalciferol]) forms the basis of preventive and therapeutic regimens for osteoporosis. A number of studies have suggested that the combination of calcium and vitamin D is effective when administered at respective...
Morton G Burt et al.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 28(2), 412-418 (2012-09-20)
Calcium supplements have been associated with an increased risk of cardiovascular events. However, the validity of these findings has been questioned. A major concern is that the mechanism underlying an increase in cardiovascular events has not been demonstrated. Calcium initiates...
Raymond W Yu et al.
Clinical transplantation, 26(2), 292-299 (2011-08-23)
Bone loss in renal transplant (RT) patients is a problem that begins during end-stage kidney disease and persists after transplantation. Suppression of parathyroid hormone (PTH) may decrease bone loss and improve fracture rate. A single-group prospective intervention study involving 30...
Harit V Desai et al.
American journal of therapeutics, 17(6), e234-e236 (2010-01-14)
Most common causes of hypercalcemia are hyperparathyroidism, malignancy, vitamin D-mediated conditions such as sarcoidosis, and vitamin D toxicity. Less commonly, hypercalcemia can be caused by drugs such as thiazide diuretics and lithium. Mild hypercalcemia is usually asymptomatic but severe hypercalcemia...

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