Sodium Metabisulfite
Cas No.: 7681-57-4
Chemical Formula: Na2s2o5
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Product detail
Product Name: Sodium Metabisulfite

Cas No.: 7681-57-4

Chemical Formula: Na2s2o5


Item Quality Index 

Food   Grade Industry   Grade 
Purity ( As Na2S2O5)98.0%   min 97.0%   min 
Sulfur Dioxide( SO2)65.0%   min 65.0%   min 
Arsenic ( As )0.0002%   max 
Heavy metals ( As Pb )0.0005%   max 
Selenium (Se )0.0005%   max 
Iron (Fe)0.001%   max 0.002%   max 
Water insoluble0.02%   max 0.05%   max 
PH value :4.0-4.8 4.0-4.8 
Remark :Conformed with FCC V and E 223   Standard


PRODUCT DESCRIPTION

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.

 

PRODUCT USAGE

1. Used for the production of insurance powder, sulfadimethylpyrimidine, analgin, caprolactam and so on;
2. Used for the purification of chloroform, phenylsulfoxide and benzaldehyde.
3. Ingredients used as fixing agents in the photographic industry;
4. The spice industry is used to produce vanillin;
5. Used as a preservative in brewing industry;
6. Rubber coagulant and cotton cloth after bleaching dechlorination agent;
7. Used for printing and dyeing, tanning;
8. Used as a reducing agent;
9. Used for electroplating industry, oil field wastewater treatment and used as mineral processing agent in mines, etc.

10.Used as preservative, bleach and loose agent in food processing.

 

PACKAGING & STORAGE

Store the product in a cool and dry place

Materials & Bill of Lading
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Factory & Shipping
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Company Introduction

Shandong Zhongshi International Trade Co., Ltd. is a comprehensive, diversified, and comprehensive company with BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, polyether polyols, polyester polyols, and polymer polyols as its main industrial chains. We have advanced production equipment and a technical team, with rich industry experience and professional knowledge. We have won recognition and praise from the industry with our exquisite technology, perfect administrative management, and good teamwork. The product is sold to multiple domestic and foreign enterprises.

We always adhere to the principle of "quality first, customer first, and reputation first", guided by technology, to provide customers with high-quality and satisfactory products. We will continue to build a professional chemical product supply chain with the best service, products, and efforts.