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草酸

工业级、食品级、试剂级、电子级草酸

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)。

六、用途:草酸主要用作还原剂和漂白剂。

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

 

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.

 

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