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Citric acid

Catalog No. 27485 Name Sigma Aldrich
CAS Number 77-92-9 Website http://www.sigmaaldrich.com
M. F. C6H8O7 Telephone 1-800-521-8956
M. W. 192.12352 Fax
Purity ≥99.5% (T) Email
Storage Chembase ID: 3882

SYNONYMS

Title
柠檬酸
IUPAC name
2-hydroxypropane-1,2,3-tricarboxylic acid
IUPAC Traditional name
citro

DATABASE IDS

Beilstein Number 782061
MDL Number MFCD00011669
PubChem SID 24856608
CAS Number 77-92-9
EC Number 201-069-1

PROPERTIES

Antion Traces chloride (Cl-): ≤5 mg/kg
Antion Traces oxalate (C2O42-): ≤500 mg/kg
Antion Traces phosphate (PO43-): ≤5 mg/kg
Antion Traces sulfate (SO42-): ≤20 mg/kg
Antion Traces tartrate (C4H4O62-): ≤2000 mg/kg
Cation Traces Al: ≤5 mg/kg
Cation Traces As: ≤0.1 mg/kg
Cation Traces Ba: ≤5 mg/kg
Cation Traces Bi: ≤5 mg/kg
Cation Traces Ca: ≤10 mg/kg
Cation Traces Cd: ≤5 mg/kg
Cation Traces Co: ≤5 mg/kg
Cation Traces Cr: ≤5 mg/kg
Cation Traces Cu: ≤5 mg/kg
Cation Traces Fe: ≤5 mg/kg
Cation Traces K: ≤50 mg/kg
Cation Traces Li: ≤5 mg/kg
Cation Traces Mg: ≤5 mg/kg
Cation Traces Mn: ≤5 mg/kg
Cation Traces Mo: ≤5 mg/kg
Cation Traces Na: ≤50 mg/kg
Cation Traces Ni: ≤5 mg/kg
Cation Traces Pb: ≤5 mg/kg
Cation Traces Sr: ≤5 mg/kg
Cation Traces Zn: ≤5 mg/kg
Grade for luminescence
Ignition Residue ≤0.05% (as SO4)
Impurities insoluble matter, passes filter test
λ 1 M in H2O
Linear Formula HOC(COOH)(CH2COOH)2
Loss on Drying ≤0.5% loss on drying, 110 °C
Product Line BioUltra
Purity ≥99.5% (T)
Suitability in accordance for luminescence
Gene Information human ... SRC(6714)
Absorption Wavelength λ: 260 nm Amax: 0.20
Absorption Wavelength λ: 280 nm Amax: 0.10
pKa (1) 3.13, (2) 4.76, (3) 6.4
Melting Point 153-159 °C(lit.)
pH 1.0-2.0 (25 °C, 1 M in H2O)
Solubility H2O: soluble1 M at 20 °C, clear, colorless
Explode Limits 8 %, 65 °F
GHS Pictograms GHS07
GHS Signal Word Warning
GHS Hazard statements H319
European Hazard Symbols Irritant Irritant (Xi)
MSDS Link Download
Personal Protective Equipment dust mask type N95 (US), Eyeshields, Gloves
GHS Precautionary statements P305 + P351 + P338
Risk Statements 36
RTECS GE7350000
Safety Statements 26
German water hazard class 1

DETAILS

REFERENCES