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  • Company Name : Wuji Xinhui Chemical Co., Ltd.
  • Tel : 86-311-85587276
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China Sodium Pyrosulfite CAS No.: 7681-57-4

China Sodium Pyrosulfite CAS No.: 7681-57-4
Product Detailed
1. Food additive Sodium Pyrosulfite 2. Industrial grade Sodium Pyrosulfite 3. CAS No.: 7681-57-4 4. Free samples

 Product Name:

Sodium metabisulfite

Category:

Inorganic chemical/inorganic salt

CAS NO:

7681-57-4

EC NO:

231-673-0

Molecular Formula:

Na2S2O5

 

Specifications

Item

Quality spec.

food grade

technical grade

Purity (Na2S2O5)

≥98.0%

≥97.0%

Sulfur dioxide( SO2)

≥65.0%

65.0%

Arsenic ( As )

≤0.0002%

-

Heavy metal (Pb)

≤0.0005%

-

Selenium (Se )

≤0.0005%

-

Iron (Fe)

≤0.001%

≤0.002%

Insol. in water

≤0.02%

≤0.05%

pH-value :

4.0-4.8

4.0-4.8

Note:

Meet FCC V and E 223 standard

 

Molecular Weight:

190.1

Packing:

In PP woven bag lined with PE film bag, lining thickness≥0.05mm,25, 50, 1000kg/bag

Specifications:

Properties: white or yellowish crystalline powder with strong SO2 odor; specific wt.: 1.4. soluble in water, its aqueous solution is acidic.Molecular Formula: Na2S2O5Molecular Weight: 190.10CAS NO.: 7681-57-4

Use:

As mordant for printing & dyeing; as dechlorinating agent for textile bleaching; as reducing agent and sulfonating agent for chemical and medical industries;Sewage treatment etc.

  

 Food grade:

Bleach agent (e.g.candies, cake, bamboo shoots, etc);

Loose agent (e.g.bread, cracker etc);

Antiseptic and germicide (e.g.fruit juice, tinned food brews, the cereals food is defended storage etc);

Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc)

Industrial grade: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 bleach ofstapk; Treatment agent of waste water; 

Rubber solidifying agent 

Perfume industry is served as hydrocarbon perfume aldehyde

The hide profession employ to do to molt dose and pliable dose and wearproof dose 

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

China Sodium Pyrosulfite CAS No.: 7681-57-4



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