194131
Oxalic acid
98%
Synonym(s):
Ethanedioic acid
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About This Item
Linear Formula:
HO2CCO2H
CAS Number:
Molecular Weight:
90.03
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
205-634-3
Beilstein/REAXYS Number:
385686
MDL number:
Assay:
98%
Form:
powder or crystals
vapor density
4.4 (vs air)
Quality Level
vapor pressure
<0.01 mmHg ( 20 °C)
assay
98%
form
powder or crystals
pH
(1.3 at 9 g/l)
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 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.
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.
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signalword
Danger
hcodes
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
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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)
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)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 194131-250G | 04061835281459 |
| 194131-1KG | 04061838761071 |
| 194131-5G | 04061838761088 |