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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/REAXYS Number:
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

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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