Oxalic Acid

1、Chemical Name: Oxalic Acid

2、Molecular Formula : H2C2O4·2H2O

3、Molecular Weight: 126.07


5、Character: It occurs as colorless transparent monoclinic system crystal. Usually, it contains two hydrates. Melting point is 101-102 ℃. Relative density (19 ℃) is 1.65. Refractive index is 1.440. It’s soluble in water, slightly soluble in ether and ethanol. It sublimates at the temperature of 157℃. Dihydrate form effloresces easily and turns to anhydrous form. Melting point of anhydrous Oxalic Acid is 189.5 ℃ (decomposing).

6、Usage: It’s used as reducing agent and bleaching agent.

7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.

8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.

Specification GB/T 1626-2008
Assay(H2C2O4·2H2O), w/%  ≥ 96.0
Sulfates (SO4) , w/%         ≤ 0.40
Ignition Residue, w/%        ≤ 0.15
Heavy Metals (As Pb) , w/%    ≤ 0.0005
Iron (As Fe) , w/%            ≤ 0.005
Chlorides (As Cl) , w/%        ≤ 0.01
Calcium (As Ca) , w/%        ≤ 0.0010

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