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21118

Sigma-Aldrich

Calcium citrate tribasic tetrahydrate

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

Synonym(s):

Citric acid calcium salt, Tricalcium dicitrate

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About This Item

Linear Formula:
Ca3(C6H5O7)2 · 4H2O
CAS Number:
5785-44-4
Molecular Weight:
570.49
Beilstein:
3924520
EC Number:
212-391-7
MDL number:
MFCD00150786
UNSPSC Code:
12161700
PubChem Substance ID:
57647903
NACRES:
NA.25

product line

BioUltra

Assay

≥98.0% (calc. on dry substance, KT)

form

powder

impurities

Insoluble matter, passes filter test

loss

10-14% loss on drying, 180°C, 4 h

solubility

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

λ

0.01 M in 0.1 M HCl

UV absorption

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

SMILES string

O.O.O.O.OC1(CC(=O)O[Ca]OC(=O)C1)C(=O)O[Ca]OC(=O)C2(O)CC(=O)O[Ca]OC(=O)C2

InChI

1S/2C6H8O7.3Ca.4H2O/c2*7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;;;/h2*13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;4*1H2/q;;3*+2;;;;/p-6

InChI key

LNIZKKFWMDARJV-UHFFFAOYSA-H

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Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

21118-VAR-F:
21118-250G-F:
21118-1KG-F:
21118-BULK-F:

Certificates of Analysis (COA)

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An in vitro model was used to simulate the intestinal permeation of calcium ions depending on the type of salt (carbonate, fumarate, citrate, or gluconate), its concentration (1.0, 2.5, 5.0, or 10 mM/l), and pH (1.3, 4.2, 6.2, or 7.5). To
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