Physical Properties Uses Preparation
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Sodium oxalate

Physical Properties Uses Preparation
Product Name
Sodium oxalate
CAS No.
62-76-0
Chemical Name
Sodium oxalate
Synonyms
natriumoxalat;DI-SODIUM OXALATE;stavelansodny;Disodium oxaL;SODIUM OXALATE;oxalatedesodium;SodiumOxalateGr;SodiumOxalateAcs;SodiumOxalateA.R.;SODIUM OXALATE PWD
CBNumber
CB5369366
Molecular Formula
C2Na2O4
Formula Weight
134
MOL File
62-76-0.mol
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Sodium oxalate Property

Melting point:
250-270 °C
Density 
2.34
storage temp. 
Store at +5°C to +30°C.
solubility 
H2O: 0.1 M at 20 °C, clear, colorless
form 
Powder
color 
White
PH
7-8.5 (25℃, 2.5% in H2O)
Odor
odorless
Water Solubility 
37 g/L (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,8650
BRN 
3631622
Stability:
Stability Stable; hygroscopic. Incompatible with strong oxidizing agents.
CAS DataBase Reference
62-76-0(CAS DataBase Reference)
NIST Chemistry Reference
Sodium oxalate(62-76-0)
EPA Substance Registry System
Sodium oxalate (62-76-0)
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Safety

Hazard Codes 
Xn
Risk Statements 
21/22-34
Safety Statements 
24/25-45-36/37/39-26-36
RIDADR 
3282
WGK Germany 
1
RTECS 
KI1750000
F 
21
TSCA 
No
HazardClass 
6.1(b)
PackingGroup 
III
HS Code 
29171100
Toxicity
LD50 orally in Rabbit: 375 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
223433
Product name
Sodium oxalate
Purity
ACS reagent, ≥99.5%
Packaging
100g
Price
$64.6
Updated
2024/03/01
Sigma-Aldrich
Product number
223433
Product name
Sodium oxalate
Purity
ACS reagent, ≥99.5%
Packaging
500g
Price
$211
Updated
2024/03/01
Sigma-Aldrich
Product number
1.06557
Product name
di-Sodium oxalate
Purity
for analysis EMSURE?
Packaging
250g
Price
$162
Updated
2024/03/01
Sigma-Aldrich
Product number
1.06557
Product name
di-Sodium oxalate
Purity
for analysis EMSURE?
Packaging
1kg
Price
$400
Updated
2024/03/01
Sigma-Aldrich
Product number
1.02407
Product name
di-Sodium oxalate
Purity
volumetric standard, secondary reference material for redox titration, traceable to NIST Standard Reference Material (SRM) Certipur? Reag. USP
Packaging
60g
Price
$119
Updated
2024/03/01
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Sodium oxalate Chemical Properties,Usage,Production

Physical Properties

White crystalline powder; density 2.34 g/cm3; decomposes around 250° C; sparingly soluble in water, 3.7 g/100 mL at room temperature; moderately soluble in boiling water, about 6.25 g/100 mL; the aqueous solution is practically neutral; insoluble in alcohol

Uses

Sodium oxalate is used as an analytical standard for standardization of potassium permanganate and other strong oxidizing agents. It also is used in finishing textiles, tanning leather, and blue printing.

Preparation

Sodium oxalate can be made by heating sodium formate at about 250°C:
2HCOONa → Na2C2O4 + H2
It also can be prepared by reacting oxalic acid with a dilute aqueous solution of sodium hydroxide followed by evaporation and crystallization.

Description

Sodium oxalate, or disodium oxalate, is the sodium salt of oxalic acid with the molecular formula Na2C2O4. It is usually a white, crystalline, odorless powder, that decomposes at 250–270 °C.
Disodium oxalate can act as a reducing agent, and it may be used as a primary standard for standardizing potassium permanganate (KMnO4) solutions.
The mineral form of sodium oxalate is natroxalate. It is only very rarely found and restricted to extremely sodic conditions of ultraalkaline pegmatites.

Chemical Properties

White, crystalline powder. Soluble in water; insolu- ble in alcohol.

Physical properties

White crystalline powder; density 2.34 g/cm3; decomposes around 250° C; sparingly soluble in water, 3.7 g/100 mL at room temperature; moderately soluble in boiling water, about 6.25 g/100 mL; the aqueous solution is practically neutral; insoluble in alcohol.

Uses

Sodium Oxalate is obtained in such high purity and is so stable that it is used as a titrimetric standard.

Uses

Sodium Oxalate illustrate the elimination of broadening due to 2nd-?order quadrupolar effects leading to a 30-?fold increase in resolution compared to magic-?angle spinningin NMR of polycrystalline.

Uses

Finishing textiles, tanning and finishing leather; for standardizing potassium permanganate solution.

Preparation

Sodium oxalate can be prepared through the neutralization of oxalic acid with sodium hydroxide (NaOH) in a 1:2 acid-to-base molar ratio. Half-neutralization can be accomplished with NaOH in a 1:1 ratio which produces NaHC2O4, monobasic sodium oxalate or sodium hydrogenoxalate.

Definition

ChEBI: An organic sodium salt consisting of sodium and oxalate ions in a 2:1 ratio.

Reactions

Sodium oxalate is used to standardize potassium permanganate solutions. It is desirable that the temperature of the titration mixture is greater than 60 °C to ensure that all the permanganate added reacts quickly. The kinetics of the reaction is complex, and the manganate (II) ions formed catalyze the further reaction between permanganate and oxalic acid (formed in situ by the addition of excess sulfuric acid). The final equation is as follows:
5Na2C2O4 + 2KMnO4 + 8H2SO4 → K2SO4 + 2MnSO4 + 10CO2 + 8H2O.

General Description

Odorless white solid. Sinks and mixes slowly with water.

Reactivity Profile

Disodium oxalate gives basic aqueous solutions. Neutralizes acids in exothermic reactions. Can serve as a reducing agent in reactions that generate carbon dioxide.

Hazard

Toxic by ingestion.

Health Hazard

Inhalation or ingestion causes pain in throat, esophagus, and stomach; mucous membranes turn white; other symptoms include vomiting, severe purging, weak pulse, cardiovascular collapse, neuromuscular symptoms, and kidney damage. Contact with eyes or skin causes irritation.

Toxicology

Like several other oxalates, sodium oxalate is toxic to humans. It can cause burning pain in the mouth, throat and stomach, bloody vomiting, headache, muscle cramps, cramps and convulsions, drop in blood pressure, heart failure, shock, coma, and possible death. Mean lethal dose by ingestion of oxalates is 10-15 grams (per MSDS).
Sodium oxalate, like citrates, can also be used to remove calcium ions (Ca2+) from blood plasma. It also prevents blood from clotting. Note that by removing calcium ions from the blood, sodium oxalate can impair brain function, and deposit calcium oxalate in the kidneys.

Purification Methods

It crystallises from hot water (16mL/g) by cooling to 0o. Before use as a volumetric standard, analytical grade quality sodium oxalate should be dried for 2hours at 120o and allowed to cool in a desiccator. [Beilstein 2 IV 1819.]

Sodium oxalate Preparation Products And Raw materials

Raw materials

Oxalic acid CARBON MONOXIDE Sodium formate Sodium hydroxide Sodium carbonate

Preparation Products

Oxalic acid
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View Lastest Price from Sodium oxalate manufacturers

Hebei Dangtong Import and export Co LTD
Product
Sodium oxalate 62-76-0
Price
US $17.00-11.00/kg
Min. Order
1kg
Purity
99.99%
Supply Ability
100Tons
Release date
2023-03-03
Hebei Yanxi Chemical Co., Ltd.
Product
Sodium oxalate 62-76-0
Price
US $40.00-10.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
10 tons
Release date
2023-11-16
Hebei Mojin Biotechnology Co., Ltd
Product
Sodium oxalate 62-76-0
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-09-11

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