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Oxalic acid

SIAL/75688 - puriss. p.a., anhydrous, ≥99.0% (RT)

Synonym: Ethanedioic acid

CAS Number: 144-62-7
Empirical Formula (Hill Notation): C2H2O4
Molecular Weight: 90.03
EC Number: 205-634-3
MDL Number: MFCD00002573
Linear Formula: HO2CCO2H
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-75688-50G 50 g
$59.60
1/EA
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45-75688-250G 250 g
$93.80
1/EA
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anion traces chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤350 mg/kg
assay ≥99.0% (RT)
cation traces Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤35 mg/kg
  K: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg
form crystals
grade anhydrous
  puriss. p.a.
ign. residue ≤0.01% (as SO4)
impurities ≤0.001% total nitrogen (N)
  ≤1% water
InChI 1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)
InChI key MUBZPKHOEPUJKR-UHFFFAOYSA-N
mp 189.5 °C (dec.) (lit.)
Quality Level 200 
SMILES string OC(=O)C(O)=O
vapor density 4.4 (vs air)
vapor pressure <0.01 mmHg ( 20 °C)
Application: Oxalic acid may be used in the preparation of the following:
• ammonium oxalate
• calcium oxalate
• chlorine dioxide (ClO2)
• potassium hydrogenoxalate
General description: Oxalic acid is a dicarboxylic acid. It reacts with aqueous iron(II) salt solutions to afford iron(III) oxalate.
Purity ≥99.0% (RT)
mp 189.5 °C (dec.) (lit.)
UNSPSC 12352100

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