chempirical

Oxalic acid

C2H2O4CAS 144-62-790.03 g/mol

Open in Covalent MOL file
OHOOOH
Carboxylic acid

Properties

Molecular formula
C2H2O4
Molar mass
90.03 g/mol
Exact mass
89.9953 Da
Density
1.9 g/mL
Melting point
189.5 °C (decomposes)
Boiling point
200 °C (at 0.1 Torr)
pKa
1, 2
Water solubility
90 g/L (20 °C)
logP
-0.84Crippen estimate
Polar surface area
74.6 Ų
H-bond donors / acceptors
2 / 2
Rotatable bonds
0

Hazards

Warning
Irritant (GHS07)

Harmonised EU classification (CLP Annex VI), via PubChem.

Precautionary statements

P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, P501

Identifiers

CAS number
144-62-7
SMILES
O=C(O)C(=O)O
InChIKey
MUBZPKHOEPUJKR-UHFFFAOYSA-N
InChI
InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

10 names
  • Ethanedioic acid
  • Aktisal
  • Aquisal
  • NSC 132055
  • NSC 151956
  • NSC 62774
  • NSC 76990
  • Ultraplast activate S 52
  • DeerClean
  • Ethanedioic acid, conjugate acid (1:2)

Reactions

Safety data sheets

One stored sheet lists this compound in section 3, matched by the CAS number 144-62-7. Each row opens the sheet with its composition and PDF.

Open in the SDS library

Work with Oxalic acid

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Isotope patternExact mass and the mass spectrum pattern

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

Ethanedioic acid hydrate (1:2)6153-56-6Hydrate Copper oxalate814-91-5Salt Ferric ammonium oxalate14221-47-7Salt Iron(II) oxalate516-03-0Salt Silver oxalate533-51-7Salt Potassium hydrogenoxalate127-95-7Salt Tin(II) oxalate814-94-8Salt Sodium oxalate62-76-0Salt Caesium oxalate1068-63-9Salt Lead(II) oxalate814-93-7Salt Lithium oxalate553-91-3Salt Ammonium oxalate1113-38-8Salt

Similar compounds

Pyruvic acid127-17-350 % similar Oxamic acid471-47-650 % similar 2-Bromoacrylic acid10443-65-944 % similar 2-Fluoroacrylic acid430-99-944 % similar 2-Chloro-2-propenoic acid598-79-844 % similar Methacrylic acid79-41-444 % similar Bromopyruvic acid1113-59-342 % similar α-Ketobutyric acid600-18-042 % similar

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

Elsewhere

PubChem CAS Common Chemistry NIST WebBook Wikipedia