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Sodium oxalate

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

Sodium oxalate Properties

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)
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)
EWG's Food Scores
1-2
FDA UNII
7U0V68LT9X
NIST Chemistry Reference
Sodium oxalate(62-76-0)
EPA Substance Registry System
Sodium oxalate (62-76-0)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H302+H312-H302-H312
Precautionary statements  P264-P270-P280h-P301+P312a-P321-P501a-P280
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
21
TSCA  No
HazardClass  6.1(b)
PackingGroup  III
HS Code  29171100
Toxicity LD50 orally in Rabbit: 375 mg/kg
NFPA 704
1
2 0

Sodium oxalate price More Price(27)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 223433 Sodium oxalate ACS reagent, ≥99.5% 62-76-0 100g $54.4 2021-03-22 Buy
Sigma-Aldrich 1.02407 di-Sodium oxalate volumetric standard, secondary reference material for redox titration, traceable to NIST Standard Reference Material (SRM) Certipur? Reag. USP 62-76-0 0063 $76.13 2021-03-22 Buy
Sigma-Aldrich 1.02407 di-Sodium oxalate volumetric standard, secondary reference material for redox titration, traceable to NIST Standard Reference Material (SRM) Certipur? Reag. USP 62-76-0 60 g $92.04 2021-03-22 Buy
Sigma-Aldrich 1.06557 di-Sodium oxalate for analysis EMSURE? 62-76-0 250 g $110.07 2021-03-22 Buy
Sigma-Aldrich 223433 Sodium oxalate ACS reagent, ≥99.5% 62-76-0 500g $178 2021-03-22 Buy

Sodium oxalate Chemical Properties,Uses,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

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

Definition

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

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.

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

Preparation Products


Sodium oxalate Suppliers

Global( 326)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-66670886
info@dakenchem.com China 20898 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29954 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282
sales3@crovellbio.com China 5930 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58
Shanghai Longyu Biotechnology Co., Ltd.
+8615821988213
+86 15821988213 info@longyupharma.com China 2499 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 37282 58

View Lastest Price from Sodium oxalate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-09-03 Sodium oxalate
62-76-0
US $10.00 / KG 1KG 99% 10 mt Hebei Guanlang Biotechnology Co., Ltd.
2021-07-13 Sodium oxalate
62-76-0
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd
2021-07-10 Sodium oxalate
62-76-0
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd

Sodium oxalate Spectrum


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