Oxalic Acid 99

Trade Name:OXALIC ACID
Other Name﹕ETHANDIOIC ACID, ACIDO OXALICO,DIHYDRATE
CAS Number:6153-56-6
Formula﹕H2C2O4．2H2O
Formula WT.﹕126.07
Physical state: white powdery crystal
PACKING:25KG/BAG

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OXALIC ACID

Colorless monoclinic flake or prismatic crystal or white powder, oxalic acid has no odor by oxidation, it has taste by synthesis. Sublimation at 150 ~ 160℃. It can be weathered in hot dry air. 1g is soluble in 7ml water, 2ml boiling water, 2.5ml ethanol, 1.8ml boiling ethanol, 100ml ether, 5.5ml glycerol, and insoluble in benzene, chloroform and petroleum ether. A 0.1mol/L solution has a pH of 1.3. The relative density (d18.54) is 1.653. Melting point 101 ~ 102℃(187℃, anhydrous). Low toxicity, median lethal dose (rabbit, percutaneous)2000mg/kg.

Test Items	Standard	Test Results

Oxalic acid (as H₂C₂O₄ 2H₂O)	99.6%min	99.65%

Sulfate (as SO₄)	0.07%max	0.005%

ignited residue (850 degree)	0.01%max	0.007%

Chloride (Cl)	0.0005%max	0.0004%

Calcium(Ca)	0.0005%max	0.0004%

USE:

Complexing agent, masking agent, precipitating agent, reducing agent. It is used to detect and determine metal ions such as beryllium, calcium, chromium, gold, manganese, strontium and thorium. Phaneropicocrystalline analysis for sodium and other elements. Precipitation of calcium, magnesium, thorium and rare earth elements. Standard solution for calibration of potassium permanganate and cerium sulfate solutions. Bleach. Dye aid. It can also be used to remove the rust on the clothes. Building industry Before painting the exterior wall paint, the oxalic acid should be brushed to remove the alkali due to the strong alkaline wall.

oxalic acid 2