1、Chemical Name: Oxalic Acid
2、Molecular Formula : H2C2O4·2H2O
3、Molecular Weight: 126.07
4、CAS：6153-56-6
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 |
