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194131

Sigma-Aldrich

Oxalic acid

98%

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Synonym(s):
Ethanedioic acid
Linear Formula:
HO2CCO2H
CAS Number:
Molecular Weight:
90.03
Beilstein/REAXYS Number:
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)

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

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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1 of 4

This Item
24117265853775688
vibrant-m

194131

Oxalic acid

vibrant-m

241172

Oxalic acid

vibrant-m

658537

Oxalic acid

vibrant-m

75688

Oxalic acid

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

form

powder or crystals

form

powder or crystals

form

powder or crystals

form

crystals

solubility

water: soluble 108 g/L at 25 °C

solubility

water: soluble ~108 g/L at 25 °C

solubility

water: soluble ~108 g/L at 25 °C

solubility

-

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

density

1.65 g/cm3 at 18.5 °C

density

1.65 g/cm3 at 18.5 °C

density

1.9 g/cm3 at 25 °C

density

-

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.

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Customers Also Viewed

Slide 1 of 3

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Oxalic acid solution for 1000 ml, c(C&#8322;H&#8322;O&#8324;) = 0.005 mol/l (0.01 N) Titrisol&#174;

Supelco

1.09932

Oxalic acid solution

General synthesis of periodic macroporous solids by templated salt precipitation and chemical conversion.
Yan H, et al.
Chemistry of Materials, 12(4), 1134-1141 (2000)
Characterization of polyaniline-polypyrrole composite coatings on low carbon steel: a XPS and infrared spectroscopy study.
Rajagopalan R and Iroh JO.
Applied Surface Science, 218(1), 58-69 (2003)
Oxalic Acid
Hamilton GS
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)
L Yang et al.
Journal of pharmaceutical and biomedical analysis, 22(3), 487-493 (2000-04-15)
Oxalic acid, oxamic acid and oxamide are potential impurities in some active pharmaceutical ingredients (API). The retention and separation of oxalic and oxamic acids are particularly challenging using conventional reversed-phase HPLC due to their high polarity. An ion-exclusion chromatography (IEC)
G M Gadd
Advances in microbial physiology, 41, 47-92 (1999-09-29)
The production of organic acids by fungi has profound implications for metal speciation, physiology and biogeochemical cycles. Biosynthesis of oxalic acid from glucose occurs by hydrolysis of oxaloacetate to oxalate and acetate catalysed by cytosolic oxaloacetase, whereas on citric acid

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