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草酸 OXALIC ACID
一、化学名：草酸，又名乙二酸
二、分子式：H2C2O4·2H2O
三、分子量：126.07
四、CAS：6153-56-6
五、性能：本品为无色透明单斜晶系结晶。通常以二水物存在。熔点101～102 ℃。相对密度（19 ℃）1.65。折射率1.440。可溶于水，稍溶于乙醚和乙醇。157 ℃升华。二水物易风化失水而成无水草酸。无水物熔点189.5 ℃（分解）。
七、包装：内衬聚乙烯塑料袋，外套塑料编织袋，每袋净重25kg。
八、贮存与运输：本品应贮存在干燥通风清洁的库房中，装载运输时要轻装轻放，防止包装破损，防止受潮、受热，运输过程中防止雨淋受潮，应与有毒物品隔离。
|
质量指标 |
Specification |
GB/T 1626-2008 |
|
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 |
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.
