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27487 Sigma

Citric acid

BioUltra, anhydrous, ≥99.5% (T)

DOWNLOAD MSDS (PDF)

  • CAS Number 77-92-9

  • Linear Formula HOC(COOH)(CH2COOH)2

  • Molecular Weight 192.12

  •  Beilstein Registry Number 782061

  •  EC Number 201-069-1

  •  MDL number MFCD00011669

  •  PubChem Substance ID 24856611

Citric acid BioUltra, anhydrous, ≥99.5% (T)
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Properties

Related Categories Allium cepa (Onion), Alphabetical, Berberis sp., BioUltra Buffers, Bioactive Small Molecules,
product line   BioUltra
assay   ≥99.5% (T)
expl. lim.   8 %, 65 °F
impurities   insoluble matter, passes filter test
ign. residue   ≤0.05% (as SO4)
loss   ≤0.5% loss on drying, 110 °C
pH   1.0-2.0 (25 °C, 1 M in H2O)
pKa    (1) 3.13, (2) 4.76, (3) 6.4
mp   153-159 °C(lit.)
solubility   H2O: soluble1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤5 mg/kg
  oxalate (C2O42-): ≤500 mg/kg
  phosphate (PO43-): ≤5 mg/kg
  sulfate (SO42-): ≤20 mg/kg
  tartrate (C4H4O62-): ≤2000 mg/kg
cation traces   Al: ≤5 mg/kg
  As: ≤0.1 mg/kg
  Ba: ≤5 mg/kg
  Bi: ≤5 mg/kg
  Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤50 mg/kg
  Li: ≤5 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Mo: ≤5 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
λ   1 M in H2O
UV absorption   λ: 260 nm Amax: 0.20
  λ: 280 nm Amax: 0.10
Gene Information   human ... SRC(6714)
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Description

Other Notes

Buffer component for triple-column amino acid analysis1; Optimal buffer for dissociation of radioiodinated antibodies from viable murine tumor cells2

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 27487.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

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