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.
|草酸（H2C2O4·2H2O）, w/% ≥||Assay（H2C2O4·2H2O）, w/% ≥||96.0|
|硫酸根（以SO4计）, w/% ≤||Sulfates (SO4) , w/% ≤||0.40|
|灼烧残渣, w/% ≤||Ignition Residue, w/% ≤||0.15|
|重金属（以Pb计）, w/% ≤||Heavy Metals (As Pb) , w/% ≤||0.0005|
|铁（以Fe计）, w/% ≤||Iron (As Fe) , w/% ≤||0.005|
|氯化物（以Cl计）, w/% ≤||Chlorides (As Cl) , w/% ≤||0.01|
|钙（以Ca计）, w/% ≤||Calcium (As Ca) , w/% ≤||0.0010|
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