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241172

Sigma-Aldrich

Oxalic acid

ReagentPlus®, ≥99%

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Synonym(s):
Aktisal, Aquisal
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)

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)

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1 of 4

This Item
75688417068.16144
vibrant-m

241172

Oxalic acid

vibrant-m

75688

Oxalic acid

vibrant-m

41706

Oxalic acid

vibrant-m

8.16144

Oxalic acid

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

200

vapor pressure

<0.01 mmHg ( 20 °C)

vapor pressure

<0.01 mmHg ( 20 °C)

vapor pressure

<0.01 mmHg ( 20 °C)

vapor pressure

<1 Pa ( 25 °C)

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

mp

189.5 °C (dec.) (lit.)

mp

189 °C (decomposition)

vapor density

4.4 (vs air)

vapor density

4.4 (vs air)

vapor density

4.4 (vs air)

vapor density

-

density

1.65 g/cm3 at 18.5 °C

density

-

density

-

density

1.9 g/cm3 at 20 °C

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

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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Oxalic acid dihydrate puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., &#8805;99.5% (manganometric)

Sigma-Aldrich

33506

Oxalic acid dihydrate

Oxalic acid dihydrate for analysis EMSURE&#174; ACS,ISO,Reag. Ph Eur

Supelco

1.00495

Oxalic acid dihydrate

Oxalic acid dihydrate EMPLURA&#174;

Supelco

1.00492

Oxalic acid dihydrate

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

Oxalic acid solution for 1000 ml, c(C&#8322;H&#8322;O&#8324;) = 0.05 mol/l (0.1 N) Titrisol&#174;

Supelco

1.09965

Oxalic acid solution

One-pot efficient synthesis of 2-aryl-1-arylmethyl-1H-benzimidazoles and 2, 4, 5-triaryl-1H-imidazoles using oxalic acid catalyst
Kokare ND, et al.
Synthesis, 2007(18), 2829-2834 (2007)
Characterization of polyaniline?polypyrrole composite coatings on low carbon steel: a XPS and infrared spectroscopy study.
Applied Surface Science, 218(1), 58-69 (2003)
Oxalic acid as a catalyst for efficient synthesis of bis-(indolyl) methanes, and 14-aryl-14H-dibenzo [a, j] xanthenes in water
Kokare ND, et al.
Chinese Chemical Letters = Zhongguo Hua Xue Kuai Bao, 19(10), 1186-1189 (2008)
Ly Thi Phi Trinh et al.
Bioresource technology, 161, 280-287 (2014-04-10)
An integrated detoxification process with electrodialysis (ED) followed by adsorption was performed to remove fermentation inhibitors from hemicellulose hydrolysates. The hydrolysates were prepared by oxalic acid pretreatment of yellow poplars at different temperatures. Of fermentation inhibitors, acetic acid showed high
General synthesis of periodic macroporous solids by templated salt precipitation and chemical conversion.
Chemistry of Materials, 12(4), 1134-1141 (2000)

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