241172

Oxalic acid

ReagentPlus^®, ≥99%

• Synonym(s): Aktisal, Aquisal
• Linear Formula: HO₂CCO₂H
• CAS Number: 144-62-7
• Molecular Weight: 90.03
• Beilstein: 385686
• EC Number: 205-634-3
• MDL number: MFCD00002573
• UNSPSC Code: 12352100
• PubChem Substance ID: 24854466
• NACRES: NA.22

Properties

• vapor density: 4.4 (vs air)
• Quality Level: 200
• 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)

Description

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

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H302 + H312,H318
• Precautionary Statements: P264 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338 - P362 + P364
• 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