Tradeasia International,Global Chemical Suppliers, Global Chemical Traders, Chemical Traders in Singapore, Chemical Trading Company, Chemical Trading Companies, Bulk Chemical Suppliers, Sodium Sulphate Anhydrous Supplier, Soda Ash Supplier

Google Plus
Advanced Search
 
  Product Name
  CAS No.
  HS Code
  Origin
  reset

Sodium Metabisulfite 96% (China Origin)

Sodium Metabisulfite 96% (China Origin)
TDS1
TDS
Please fill the form to download TDS
* Fields are Mandatory
Name* :
E-Mail* :
Phone:
Requirement :
 
reset
TDS
MSDS
Please fill the form to download MSDS
* Fields are Mandatory
Name* :
E-Mail* :
Phone:
Requirement :
 
reset
mail
Email
Enquiry on Sodium Metabisulfite 96% (China Origin)
* Fields are Mandatory
Name* :
E-Mail* :
Phone:
Requirement :
 
reset
mail
Enquiry on Sodium Metabisulfite 96% (China Origin)
* Fields are Mandatory
Name* :
E-Mail* :
Phone:
Requirement :
 
reset
Linkedin Facebook Twitter
Country Origin : China Appearence : White or Slightly Yellowish Powder
CAS No. : 7681-57-4 H.S. Code : 3802.10.00
Formula : Na2S2O5 Common Names : Sodium Pyrosulfite
IUPAC Name : Sodium Metabisulfite
Packaging : 1000 @ 25 kg net PP woven bag with PE inner, 25 MT / 20'FCL
  • Description
  • Application
Brief Overview

 

Sodium metabisulfite, also known as sodium disulfite or sodium pyrosulfite, is an inorganic compound and has a formula of Na2S2O5. Its anion consists of a SOgroup linked and joined to a SO3 group, making it a hybrid of dithionite and dithionate. The negative charge of the anion is more localized on the SO3 group due to the presence of more electronegaitve oxygen atoms. When sodium metabisulfite is mixed with water or strong acids or upon heating at high temperature, the pungent gaseous sulfur dioxide is released. This unpleasant smelling gas can cause breathing difficulties in individuals; hence alternatives such as odorless hydrogen peroxide are more widely used.

 

Manufacturing Process

Using Sodium Bisulfite

Sodium metabisulfite can be manufactured using sodium bisulfite and sulfur dioxide. A solution of sodium bisulfite saturated with sulfur dioxide is allowed to evaporate, yielding sodium metabisulfite as shown.

Using Sodium Carbonate/ Sodium Hydroxide

Sodium metabisulfite can be manufactured by treating sodium hydroxide or a suspension of sodium carbonate with sulfur dioxide containing gases in saturated sodium hydrogen sulfite solution. Sodium metabisulfite yielded is removed by centrifugation and dried.



Food Industry

Sodium metabisulfite is used as a preservative and antioxidant in food and is also known as E223. It may cause allergic reactions in those who are sensitive to sulfites, including respiratory reactions in asthmaticsanaphylaxis and other allergic reactions in sensitive individuals. Sodium metabisulfite and potassium metabisulfite are the primary ingredients in Campden tablets, used for wine and beer making.


Textile Industry

Sodium metabisulfite is used as a bleaching and dechlorination agent for bleached cotton. It is also used in the deliming process during leather processing and prevents the formation of toxic sulfide gas. It bleaches the leather and makes leather soft, well-developed, tough, waterproof, anti-break, wear-ability and etc.

 

Cleaning Agent

It is commonly used in home brewing and winemaking to sanitize equipment. It is used as a cleaning agent for potable water reverse osmosis membranes in desalination systems. It is also used to remove chloramine from drinking water after treatment.

 

Other Applications

In photography industry, sodium metabisulfite is used for production of developer solution and acidising fixation baths. Concentrated sodium metabisulfite can be used to remove tree stumps. It is also used as an excipient in some tablets, such as paracetamol.