Oxalic acid Dihydrate 99%

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Oxalic acid is used as a gangue depressant during the flotation of ores containing oxidic minerals. Some of the processes were it is used are:

  1. Flotation of niobium – used as a silica, dolomite depressant and pH regulator
  2. During niobium/zirconium separation from bulk concentrate as a zirconium depressant.
  3. As a gangue depressant in the flotation of some rare earth oxides eg monazite
  4. Oxalic acid can also be used to pre-treat chalcopyrite coated with limonite. The limonite coat renders the chalcopyrite not amenable to flotation and is cleaned up by oxalic acid before washing and then flotation.

Usage Guidelines for Oxalic Acid 99%

Feature

Oxalic Acid 99%

Ores were used

Sulphides, depresses pyrites, pyrrhotite: Also used as gangue depressant in ores containing oxidic minerals

Dosage

200-300g/ton

pH

+12

Other additions

Lime/caustic soda. Sometimes used together with ammonium chloride

 

 

 

Identifiers

3DMet

B00059

ATCvet code

QP53AG03

Beilstein Reference

385686

CAS number

144-62-7 

ChEBI

CHEBI:16995 

ChEMBL

ChEMBL146755 

ChemSpider

946 

DrugBank

DB03902 

EC number

205-634-3

Gmelin Reference

2208

KEGG

C00209 

MeSH

Oxalic+acid

PubChem

971

RTECS number

RO2450000

UNII

9E7R5L6H31 

UN number

3261

Properties

Molecular formula

C2H2O4

Molar mass

90.03 g·mol−1
(anhydrous)
126.07 g mol−1 (dihydrate)

Appearance

White crystals

Density

1.90 g cm−3 (anhydrous)
1.653 g cm−3 (dihydrate)

Melting point

102 °C (216 °F; 375 K) 101.5 °C (214.7 °F) dihydrate

Solubility in water

143 g/L (25 °C)

Solubility

237 g/L (15 °C) in ethanol


14 g/L (15 °C) in diethyl ether

Acidity (pKa)

1.25, 4.14

View FileOxalic acid Dihydrate 99% COA    Size: (1.26 MB)

Oxalic acid Dihydrate 99% COA

View FileOxalic acid SDS    Size: (1.21 MB)

Oxalic acid SDS

  • With thousands of suppliers competing for our business, Kemcore has proven to be the most reliable and consistent import/export company in China, offering quality chemicals at competitive prices. We strive to continue working with them.

    Macheng Macheng

    Senior Buyer

    KS Energy (Pty) Ltd

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    Managing Director

    Sesani EPCM

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    Metallurgical Superintendent

    Pan African Mining

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