194131

Oxalic acid

98%

• Synonym(s): Ethanedioic acid
• 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: 24851633
• NACRES: NA.22

Properties

• vapor density: 4.4 (vs air)
• vapor pressure: <0.01 mmHg ( 20 °C)
• Assay: 98%
• 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
• functional group: carboxylic acid
• 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 a dicarboxylic acid used in dehydration, elimination, protection, deprotection, condensation, and decarboxylation reactions.

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

Application

Oxalic acid was used in determination of oxamic acid, oxalic acid, and oxamide in hydrophobic drug substance matrix by ion-exclusion chromatography. It was used in the synthesis of three-dimensionally ordered macroporous metal oxides or carbonates via templating with polystyrene spheres. It was employed as supporting electrolyte during electrochemical synthesis of polyaniline-polypyrrole composite coatings.

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