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241172

Oxalic acid

ReagentPlus®, ≥99%

Synonym(s):

Aktisal, Aquisal

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About This Item

Linear Formula:
HO2CCO2H
CAS Number:
144-62-7
Molecular Weight:
90.03
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24854466
EC Number:
205-634-3
Beilstein/REAXYS Number:
385686
MDL number:
MFCD00002573
Assay:
≥99%
Form:
powder or crystals
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vapor density

4.4 (vs air)

Quality Level

200

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

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)

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

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pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

241172-50G:4.548173122861E12

jan

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Certificates of Analysis (COA)

Lot/Batch Number
24097JJ
10608TE
06924BW
07111EE
00228ED

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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
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)
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