Sigma-Aldrich

Citric Acid, 99.5% ACS Reagent, 2.5 kg

Part Number:
MIL-251275-25KG
Lead Time:
7-14 days
Minimum Purchase:
1 unit
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Quantity:
each
Size:
2.5 kg
Style:
chemical
DOT Rated:
HazMat Transport Fee Required
Price: $325.67

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Description

Citric Acid 99.5% ACS Reagent 2.5 Kg

  • CAS Number 77-92-9
  • Linear Formula HOC(COOH)(CH2COOH)2
  • Molecular Weight 192.12
  • Beilstein/REAXYS Number 782061
  • EC Number 201-069-1
  • MDL number MFCD00011669
  • eCl@ss 39021801
  • PubChem Substance ID 24855122
Quality Level 200
Grade ACS reagent
InChI Key KRKNYBCHXYNGOX-UHFFFAOYSA-N
Assay ≥99.5%
Expl. Lim. 8 %, 65°F
Impurities Substances carbonizable by hot sulfuric acid, passes test
ign. residue ≤0.02%
pKa (1) 3.13, (2) 4.76, (3) 6.4
mp 153-159°C (lit.)
anion traces

chloride (Cl-): ≤0.001%
oxalate (C2O42-): passes test (limit about 0.003%)
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%
cation traces

Fe: ≤3 ppm
Pb: ≤2 ppm
Gene Information human ... SRC(6714)

General description

Citric acid is an organic acid commonly used as a chelating agent, a buffering agent, for pH adjustment and derivatization.

Application

Citric acid has been used to prepare:

  • Phosphate citrate buffer for use in enzyme-linked immunosorbent assay.
  • Citrate-stabilized ceria aqueous sol, which was employed in the synthesis of cerium oxide nanoparticles.
  • Citric acid-Na2HPO4-buffered stock solution for use in the determination of fecal urease activity.
  • Anticoagulant citrate dextrose solution A (ACD-A), which is employed during the isolation of blood-derived endothelial progenitor cells.

Citric acid has also been used:

  • In a novel process which allows controlling of the particle size during the synthesis of palladium cuboctahedrons.
  • To prepare citric acid-derived carbon nanodots (CNDs) by bottom-up carbonization method.[5]
  • As a bi-component chelating agent for the synthesis of Li4Ti5O12 (lithium titanate oxide) by a novel sol–gel method.

Safety Information 

GHS07GHS07

Signal word Warning
Hazard statements H319
Precautionary statements P264-P280-P305 + P351 + P338-P337 + P313
Personal Protective Equipment dust mask type N95 (US), Eyeshields, Gloves
RIDADR NONH for all modes of transport
WGK Germany 1RTECS GE7350000

Documents 

Safety Data Sheet

Warnings

Note: These chemicals are for research & laboratory use only. Your order will not be processed if you do not work for, and ship to, a registered laboratory or research facility. Not for topical applications. An official Declaration of Use form may be required.

Most chemicals cannot be expedited.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. Prop 65 Warning

Please note: This product is not returnable.

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MPN:
251275-2.5KG