​​​​​​​​南星化工

S.S CHEM

Sodium Metabisulfite 焦亚硫酸钠

Sodium Metabisulfite 焦亚硫酸钠

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Sodium Metabisulfite

1. Basic indicators                                                                            

Molecular formula:

Na2S2O5

Cas No.:

7681-57-4

Appearance:

White or light yellow crystalline powder

H.S Code:

2832100000

2. Technical specifications                                                                    

Item

Index

Na2S2O5

97% min

Fe

  0.003% max

Water insoluble matter

0.04% max

AS  

0.0001% max

PB    

0.001% max

3. Application                                                                                                      

Mordant of printing and dyeing;

Dechlorinate of textile after bleaching;

Sulphonated agent and reducer of chemical industry and pharmacy;

Bleach of paper pulp, bamboo and timber; Treatment agent of waste water;

Rubber solidifying agent;

Perfume industryis served as hydrocarbon perfume aldehyde;

The sensitize industry is served as the developing agent, reductant, the protection of fixing bath dose, and so on.

4. Packing and storage                                                                                       

Packing: Double coated plastic woven bag, 25kg net; 500kg / 1000kg jumbo bags.

Storage: Dry, ventilated, moisture proof.


焦亚硫酸钠 

别名: 偏重亚硫酸钠,重硫氧。

英文名:sodium metabisulfite, sodium pyrosulfite.

分子式:Na2S2O5

分子量:190.10

性状: 

焦亚硫酸钠为白色或黄色结晶粉末或小结晶,带有强烈的SO2气味,比重 1.4,溶于水,水溶液呈酸性,与强酸接触则放出SO2而生成相应的盐类, 久置空气中,则氧化成Na2S2O4,故该产品不能久存。高于1500C,即分解出SO2。

工业级:

项目

优级品

一级品

含量(Na2S2O5)% ≥

98.0

95.0

铁(Fe)% ≤

0.005

0.01

水不溶物 % ≤

0.05

0.05

砷(As)% ≤

0.0001


用途:

印染媒染剂,织物漂后脱氯剂;医药用还原剂和磺化剂;竹、木、纸纤维漂白剂;有色金属选矿剂;废水处理剂;橡胶凝固剂.

包装:外用聚丙烯编织袋,内衬聚乙烯塑料袋。

净重:25千克/袋 50千克/袋 1000千克/袋