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草酸 | 江苏科伦多食品配料有限公司-凯发官网首页

产品描述/ product description

一、化学名:草酸,又名乙二酸

二、分子式:h2c2o4·2h2o

三、分子量:126.076

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:草酸主要用作和。

七、包装:内衬聚乙烯塑料袋,外套复合塑料编织袋包装,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,应与有毒物品隔离

 

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/%              ≤ ————

 

1、chemical name: oxalic acid

2、molecular formula: h2c2o4·2h2o

3、molecular weight: 126.076

4、cas: 6153-56-6

5、character: it occurs as colorless transparent monoclinic system crystal. usually, it is dihydrated. its 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.

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