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1170 亚硫酸氢钠 NaHSO3

一、产品名称:
商品名称:亚硫酸氢钠
化学名称:亚硫酸氢钠
分子式: NaHSO3
分子量: 104.06 ( 按 1961 年国际原子量 )

二、产品的理化性质:
   成品呈白色单斜晶体粉末。湿时带有强烈的 SO 2 气味,干燥后无其它气味,相对密度 1.48 极易溶于水,加热时易分解,微溶于乙醇,水溶液呈酸性、还原性较强、在空气中易被氧化或失去二氧化硫将二氧化硫通入氢氧化钠或碳酸钠溶液而制得。

三、用途
   亚硫酸氢钠广泛用于葡萄蔗糖浆、合成有机药品、漂白稻草、用作除氯剂媒染剂与消色剂等。

四、质量标准
l 、外观:亚硫酸氢钠为白色晶体状粉末。
2 、亚硫酸氢钠符合下列要求: ( 杂质量高含量标准以%计 )

指标名称

指标

亚硫酸氢钠含量≥

96.0

水不溶物

0.03

氯化物 (CI)

0.01

铁 (Fe)

0.004

砷 (As)

0.0002

铅 属 ( 以 pb 计 )

0.002

澄清度试验合格

五、注意事项
   产品露置空气中极易被氧化、并不断放出二氧化硫气体,故本产品不易久存、不易露天存放、不可受潮,本产品加温到高于 150 度则分解放出二氧化硫气体,故不可与汽油及氧化剂等其它易燃物品混存和混运,本产品包装为内衬塑料袋外加一层编织袋,每袋净重 50 公斤 。出口每袋净重 25 公斤 。

A 、 NAME OF PRODUCT
Commodity Name : Sodium hydrogen sulfite
Chemical Name : Sodium hydrogen sulfite
Molecular formula : NaHSO 3
Molecular Weight : 104.06 (in accordance with the 1961 International atomic weight).

B 、 PHYSICAL AND CHEMICAL ROPERTIES OF PRODUCT
  
The product exists in form of white powder of monoclinic crystals with strong SO 2 smell when being wet, but without any other smell after it is dried. Its relative density is 1.48 . It is easy soluble in water and little soluble in ethanol. It disintegrates easily when being heated. Its water solution exhibits acidity with strong reducibility. It is easily oxidized in air or loses its sulfur dioxide. It is made by introducing sulfur dioxide into sodium hydroxide or sodium acid carbonate.

C 、 APPLICATIONS
  
Sodium hydrogen sulfite is widely used in glucose syrup, composite organic medicines, bleaching straw, used as anticholor, dye mordant and color remover, etc.

D 、 QUALITY STANDARD
1 、 Appearance : Sodium hydrogen sulfite grade one is white crystal powder.
2 、 Sodium hydrogen sulfite meets the following requirements:
(Highest impurities are in %)

Name of parameter

Parameter

Content of sodium hydrogen sulfite ≥

96.0

Water insoluble material

0.03

Chloride (CI)

0.01

Iron (Fe)

0.004

Arsenic (As)

0.0002

Lead (in pb)

0.002

E 、 CAUTION
  
The product is very easy to be oxidized when exposed to air and emit sulfur dioxide continuously, so it is difficult to store the product for a long time in open air and it is necessary to protect the product from moisture. The product will disintegrate when heated above 150 ℃ and emit sulfur dioxide gas, so the product cannot be stored and transported together with gasoline, acids or oxidants and other inflammable substances. The product is packed in internal plastic bags with external braided bags in net weight of 50kg . Product for export is packed in net weight of 25kg .




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