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241172

Sigma-Aldrich

Oxalic acid

ReagentPlus®, ≥99%

Linear Formula:
HO2CCO2H
CAS Number:
Molecular Weight:
90.03
Beilstein:
385686
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor density

4.4 (vs air)

Quality Level

vapor pressure

<0.01 mmHg ( 20 °C)

product line

ReagentPlus®

assay

≥99%

form

powder or crystals

mp

189.5 °C (dec.) (lit.)

solubility

water: soluble ~108 g/L at 25 °C

density

1.65 g/cm3 at 18.5 °C

SMILES string

OC(=O)C(O)=O

InChI

1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)

InChI key

MUBZPKHOEPUJKR-UHFFFAOYSA-N

Gene Information

human ... SRC(6714)

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General description

Oxalic acid is present as potential impurity in some active pharmaceutical ingredients.

Application

Oxalic acid may be used as a catalyst to synthesize:
  • 2-aryl-1-arylmethyl-1H-benzimidazoles from o-phenylenediamine and aldehydes
  • 2-aryl-4,5-diphenyl-1H-imidazoles from benzyl/benzoin, ammonium acetate and aromatic aldehydes
  • bis-compounds of indole and 2-naphthol in an aqueous medium

Oxalic acid was used:
  • in the synthesis of hemicellulose hydrolysates of yellow poplars
  • in the synthesis of three-dimensionally ordered macroporous metal oxides or carbonates via templating with polystyrene spheres
  • as supporting electrolyte in the electrochemical synthesis of polyaniline-polypyrrole composite coatings

Packaging

50 g in poly bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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