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 is dihydrated. It’s melting point is 101-102 ℃. The relative density (19 ℃) is 1.65. The 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 Oxalic Acid anhydrous 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.
| 质量指标 | Specification | GB/T 1626-2008（氧化法） |
| 草酸（H2C2O4·2H2O）, w/% ≥ | Content（H2C2O4·2H2O）,w/% ≥ | 96.0 |
| 硫酸根（以SO4计）, w/% ≤ | Sulfates (As SO4) , w/% ≤ | 0.4 |
| 灼烧残渣, w/% ≤ | Ignition Residue,w/% ≤ | 0.15 |
| 重金属（以Pb计）, w/% ≤ | Heavy Metal(As Pb) ,w/% ≤ | 0.0005 |
| 铁（Fe）,w/% ≤ | Iron (Fe),w/% ≤ | 0.005 |
| 氯化物（以Cl计）, w/% ≤ | Chlorides (As Cl) , w/% ≤ | 0.01 |
| 钙（Ca）, w/% ≤ | Calcium (Ca) ,w/% ≤ | ———— |
