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Name oxalic powder
Synonyms Ethanedionic acid
Appearance: White Crystalline Powder
Purity: 99.6% Min.
Molecular Formula C2H2O4.2(H2O)
Molecular Weight 126.06
CAS Registry Number 6153-56-6
Melting point 98-102 ºC (dec)
Sublimation 157 ºC
Water solubility 138 g/L (20 ºC)
Oxalic Powder 99.6% White Crystal
Oxalic Powder Colorless prismatic crystal or white powder, oxalic acid by oxidation method is odorless, and oxalic acid by synthetic method is odorless. 150~160℃ sublimation. It can be weathered in hot dry air. 1g is dissolved in 7ml water, 2ml boiling water, 2.5ml ethanol, 1.8ml boiling ethanol, 100ml ether, 5.5ml glycerol, insoluble in benzene, chloroform and petroleum ether. The pH value of 0.1mol/L solution is 1.3. Relative density (d18.54) 1.653. Melting point 101 ~ 102 ℃ (187 ℃, anhydrous).
Specification of Oxalic powder :
| Purity | 99.6%min. |
| Sulphate | 0.05%max. |
| Heavy metals (Pb+) | 0.001%max. |
| Ferrous (Fe3+) | 0.001%max. |
| Chloride (Cl-) | 0.001%max. |
| Ignition residue(850 oC) | 0.06%max. |
Capacity: 25MT/20FCL without pallet
Storage: Oxalic acid should be stored in a cool, dry, well-ventilated area in tightly sealed containers.
Packing: in 25kg bag or jumbo bag
Application:
Complexing agent, masking agent, precipitating agent, reducing agent. In the analysis, it is used to verify and measure metal ions such as beryllium, calcium, chromium, gold, manganese, strontium, and thorium. Microcrystalline analysis examines sodium and other elements. Precipitated calcium, magnesium, thorium and rare earth elements. Calibrate standard solutions of potassium permanganate and cerium sulfate solutions. bleach. Dyeing aids. It can also be used to remove rust on clothes. In the construction industry, oxalic acid should be applied to remove alkali before painting the exterior wall paint because the wall is alkaline.
