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223433

Sigma-Aldrich

Sodium oxalate

ACS reagent, ≥99.5%

Synonym(s):

Ethanedioic acid sodium salt, Oxalic acid disodium salt

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About This Item

Linear Formula:
NaOOCCOONa
CAS Number:
Molecular Weight:
134.00
Beilstein:
3631622
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NB.24

grade

ACS reagent

Quality Level

description

neutrality passes test

Assay

≥99.5%

form

powder

impurities

hot H2SO4, passes test (darkened)
≤0.005% insolubles

loss

≤0.01% loss on drying

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.002%

cation traces

Fe: ≤0.001%
K: ≤0.005%
NH4+: ≤0.002%
heavy metals (as Pb): ≤0.002%

SMILES string

[Na+].[Na+].[O-]C(=O)C([O-])=O

InChI

1S/C2H2O4.2Na/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2*+1/p-2

InChI key

ZNCPFRVNHGOPAG-UHFFFAOYSA-L

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General description

Sodium oxalate is a water soluble inorganic salt mainly used for the standardization of permanganate solution during titration.

Application

Sodium oxalate may be used as a dispersant and a coordination agent for the electrooxidation of formic acid using a palladium nanoparticle catalyst dispersed on the purified multi-walled carbon nanotubes (P-MWCNTs). In combination with sodium hydroxide, it may be used to mediate the preparation of Cu/ZrO2 catalyst from copper nitrite and zirconium nitrate solution mixture via coprecipitation method.

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Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Sodium Hydroxide-Sodium Oxalate-Assisted Co-Precipitation of Highly Active and Stable Cu/ZrO2 Catalyst in the Partial Oxidation of Methanol to Hydrogen.
Chen H, et al.
Catalysis Letters, 131(3-4), 632-642 (2009)
Electrooxidation of formic acid catalyzed by Pd nanoparticles supported on multi-walled carbon nanotubes with sodium oxalate.
Bai Z, et al.
Ionics, 19(3), 543-548 (2013)
Guillem Revilla-López et al.
Langmuir : the ACS journal of surfaces and colloids, 35(36), 11912-11922 (2019-08-03)
Biominerals formed by DNA and calcium oxalate (CaOx) or hydroxyapatite (HAp), the most important and stable phase of calcium phosphate) have been examined and compared using a synergistic combination of computer simulation and experimental studies. The interest of this comparison
The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals
Royal Society of Chemistry null
Lu Gao et al.
International journal of phytoremediation, 15(4), 307-319 (2013-03-16)
Phytolacca americana L. can accumulate large amounts of heavy metals in its aerial tissues, especially cadmium (Cd) and manganese (Mn). It has great potential for use in phytoextraction of metals from multi-metal-contaminated soils. This study was conducted to further investigate

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