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Sigma-Aldrich

Sodium oxalate

puriss. p.a., ACS reagent, ≥99.5% (RT)

Synonym(s):

Ethanedioic acid sodium salt, Oxalic acid disodium salt

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About This Item

Linear Formula:
NaOOCCOONa
CAS Number:
62-76-0
Molecular Weight:
134.00
Beilstein:
3631622
EC Number:
200-550-3
MDL number:
MFCD00012465
UNSPSC Code:
12352300
eCl@ss:
39021701
PubChem Substance ID:
329763542
NACRES:
NB.24
form:
powder or crystals
Pricing and availability is not currently available.

grade

ACS reagent
puriss. p.a.

Quality Level

200

Assay

≥99.5% (RT)

form

powder or crystals

impurities

≤0.002% ammonium (NH4)

loss

≤0.01% loss on drying, 105 °C

pH

7-8.5 (25 °C, 2.5% in H2O)

anion traces

chloride (Cl-): ≤20 mg/kg
sulfate (SO42-): ≤20 mg/kg

cation traces

Ca: ≤100 mg/kg
Cd: ≤10 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤10 mg/kg
K: ≤50 mg/kg
Mg: ≤10 mg/kg
Mn: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

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 sodium salt of oxalic acid consisting of sodium and oxalate ions. It is used as a reducing agent in chemical synthesis. Additionally, it also acts as a surface modifier and a desulfurizing agent.

Application

Sodium oxalate can be used as a stabilizer in the determination of L-ascorbic acid in vitamin C products by the ultraviolet spectrophotometric method. It is also used in the synthesis of copper oxalate nanoparticles by electrolysis of copper plate as anode.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302 + H312

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL3539
BCCJ8667
BCCF1170
BCCC6505
BCCC5711

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F Debela et al.
Journal of environmental management, 116, 156-162 (2013-01-15)
Pyromorphite (PY) and some zinc phosphates (Zn-P) are very sparingly soluble minerals and hence can immobilize Pb and Zn in contaminated soils. However, mechanisms leading to the poor efficiency of PY and Zn-P formation in contaminated soils amended with P
Lars Poulsen et al.
PloS one, 7(12), e50596-e50596 (2012-12-20)
Acid formation in Aspergillus niger is known to be subjected to tight regulation, and the acid production profiles are fine-tuned to respond to the ambient pH. Based on transcriptome data, putative trans-acting pH responding transcription factors were listed and through
Bhagawatilal Jagetiya et al.
Chemosphere, 91(5), 692-696 (2012-12-27)
A greenhouse experiment was set up to investigate the ability of citric acid (CA), oxalic acid (OA), nitrilotriacetic acid (NTA) and EDTA for phytoremediation of uranium tailings by Indian mustard [Brassica juncea (L.) Czern. et Coss]. Uranium tailings were collected
Xiaoting Chen et al.
Plant cell reports, 32(10), 1589-1599 (2013-06-12)
Based on Arabidopsis microarray, we found 8 WRKY genes were up-regulated with Oxalic acid (OA) challenge, AtWRKY28 and AtWRKY75 overexpression lines showed enhanced resistance to OA and Sclerotinia sclerotiorum. The WRKY transcription factors are involved in various plant physiological processes
Jiří Jan et al.
Water research, 47(2), 547-557 (2012-12-12)
Correct identification of P forms together with their main Fe and Al binding partners in non-calcareous sediments is of crucial importance for evaluation of P cycling in water bodies. In this paper, we assess extraction methods frequently used for this
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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