Oxalic acid, also known as thanedioic acid, is a white crystalline powder or crystalline granules with the chemical formula of H2C2O4. It is a simple dibasic acid, taste sour, easily soluble in water and ethanol, slightly soluble in ether, insoluble in benzene. When the oxalic acid crystal is heated to 100°C, it will lose crystal water and become anhydrous oxalic acid. Anhydrous oxalic acid is colorless, odorless transparent crystal or white powder, poisonous, soluble in water, alcohol and ether. In addition, oxalic acid dihydrate is also a colorless crystal, which will lose moisture and become a white powder in dry air or when heated.
Oxalic acid is ubiquitous in nature and often exists in various plants in the form of oxalate, such as the cell membranes of barberry, sheepsorrel, sorrel and sorrel, and almost all plants contain calcium oxalate. As an organic acid, oxalic acid plays an important role in industries such as electroplating, metal cleaning and textile printing and dyeing.
|Purity (C2H2O4.2H2O)% ≥||99.6|
|Sulphate group (SO4) % ≤||0.07|
|Incinerated residue % ≤||0.01|
|Heavy metal (Pb) % ≤||0.0005|
|Iron (Fe) % ≤||0.0005|
|Chlorides (Cl) % ≤||0.0005|
|Calcium (Ca) % ≤||0.0005|
|Storage and transportation||Seal and store in a dry and cool place. Strictly moistureproof, waterproof and sunscreen. The storage temperature should not exceed 40 ℃.
Keep away from oxides and alkaline substances. Packing with polypropylene woven bags lined with plastic bags.
Applications of Oxalic Acid 99.6%
As an important chemical substance, oxalic acid has a wide range of applications. And the most common application of oxalic acid is oxalate. Oxalate is widely used in metallurgy, casting, chemical industry and other fields. It is also widely used in cellulose chemistry for decolorization, bleaching and resin removal, etc.