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oxalic acid

File:Oxalsäure2.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ184832· pop 69· linked from 422 articles

oxalic acid

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Also known as ethanedioic acid, H2ox, HOOCCOOH, ethane-1,2-dioic acid, oxalic acid anhydrous, ethanedionic acid, (COOH)2, dicarboxyl

chemical compound

OverviewAI-generated

Oxalic acid is a chemical compound with the formula C₂H₂O₄. It has a standard enthalpy of formation of -817.38 and a combustion enthalpy of -251.8. The substance exhibits a density of 1.90 and a solubility of 14. Its melting point is 189.5, while its boiling point is 365. The flash point is recorded as 166, and the vapor pressure is 0.001.

The compound has a pKa of 1.19 and an electric dipole moment of 0.0. Its median lethal dose (LD50) is 270. Occupational safety limits include a time-weighted average exposure limit of 1 and a short-term exposure limit of 2. The immediately dangerous to life or health concentration is 500. Oxalic acid has a mass of 89.995 and a weight of 90.03.

Synthesized by Vinony from 33 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula
C2H2O4
Molecular weight
90.03 g/mol
IUPAC name
oxalic acid
SMILES
C(=O)(C(=O)O)O
InChIKey
MUBZPKHOEPUJKR-UHFFFAOYSA-N
XLogP
-0.3
Polar surface area
74.6 Ų
H-bond donors
2
H-bond acceptors
4
Formal charge
0

via PubChem

Research

19,641 papers

via PubMed

Wikidata facts

Subclass of
diprotic acid
Has part
hydrogen
Mass
89.995
Image
Oxalic acid, anhydrous.jpg
Show 22 more facts
NIOSH Pocket Guide ID
0474
described by source
Encyclopædia Britannica 11th edition
Commons category
Oxalic acid
canonical SMILES
C(=O)(C(=O)O)O
density
1.90
immediately dangerous to life or health
500
solubility
14
vapor pressure
0.001
time-weighted average exposure limit
1
short-term exposure limit
2
chemical formula
C₂H₂O₄
standard enthalpy of formation
-817.38
found in taxon
Stemona tuberosa
electric dipole moment
0.0
combustion enthalpy
-251.8
melting point
189.5
flash point
166
boiling point
365
pKa
1.19
subject has role
primary metabolite
conjugate base
hydrogenoxalate
median lethal dose (LD50)
270
Sources (9)

via Wikidata · CC0

~15 min read

Encyclopedic overview

Oxalic acid dihydrateOxalic acid dihydrate

Names

Excerpted from Wikipedia’s “oxalic acid” article, available under the CC BY-SA 4.0 licence.

Gallery (11)

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