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Merck

71800

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
Assay:
≥99.5% (RT)
Form:
powder or crystals

Key Documents

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grade

ACS reagent
puriss. p.a.

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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1 of 4

This Item
3797351.06557NIST8040A
Sodium oxalate puriss. p.a., ACS reagent, ≥99.5% (RT)

Sigma-Aldrich

71800

Sodium oxalate

Sodium oxalate ≥99.99% trace metals basis

Sigma-Aldrich

379735

Sodium oxalate

di-Sodium oxalate for analysis EMSURE®

Supelco

1.06557

di-Sodium oxalate

Sodium Oxalate Reductometric Standard NIST®SRM®

NIST8040A

Sodium Oxalate Reductometric Standard

form

powder or crystals

form

powder

form

solid

form

-

assay

≥99.5% (RT)

assay

≥99.99% trace metals basis

assay

≥99.8% (manganometric)

assay

-

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

-

grade

ACS reagent, puriss. p.a.

grade

-

grade

-

grade

certified reference material

anion traces

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

anion traces

-

anion traces

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

anion traces

-

cation traces

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

cation traces

-

cation traces

Fe: ≤0.0005%, K: ≤0.005%, N: ≤0.001%, heavy metals (as Pb): ≤0.001%

cation traces

-

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
BCCN4807
BCCL3539
BCCJ8667
BCCF1170
BCCC6505

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Hong-Joo Lee et al.
Bioresource technology, 130, 211-217 (2013-01-12)
The present study investigated the feasibility of the recovery and reuse oxalic acid in a multistage process for the pretreatment of a lignocellulosic biomass. Electrodialysis (ED), an electrochemical process using ion exchange membranes, was used to recover and reuse oxalic
Taiying Zhang et al.
Carbohydrate polymers, 92(1), 334-344 (2012-12-12)
Dilute oxalic acid pretreatment was applied to maple wood to improve compatibility with downstream operations, and its performance in pretreatment and subsequent enzymatic hydrolysis was compared to results for hydrothermal and dilute hydrochloric and sulfuric acid pretreatments. The highest total
Lois Fernandez et al.
Clinical biochemistry, 46(4-5), 285-288 (2012-12-12)
There are no direct comparisons of blood glucose values in samples collected with barrier serum tubes (SST) and NaF/potassium oxalate (NaF/KOx) plasma tubes. Collection of samples in SST tubes can offer considerable savings and specimen processing advantages for national level
Sabine Studenroth et al.
Environmental science & technology, 47(3), 1323-1329 (2013-01-15)
Oxalic acid is the smallest dicarboxylic acid and plays an important role in soil processes (e.g., mineral weathering and metal detoxification in plants). We have first proven its abiotic formation in soils and investigated natural abiotic degradation processes based on
Peiyan Li et al.
Food chemistry, 142, 72-78 (2013-09-05)
Effects of oxalic acid on chilling injury, proline metabolism and energy status in mango fruit were investigated after mango fruit (Mangifera indica L. cv. Zill) were dipped in 5mM oxalic acid solution for 10min at 25°C and then stored at
View All Related Papers

Questions

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  1. 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/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    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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