Changsha Weichuang Chemical Co., Ltd.
Main products:Sodium Metabisulfite,Sodium Thiosulfate,Sodium Sulfite,Ferrous Sulphate,Ferrous Carbonate
Contact Us
  • Contact Person : Mr. Chen Jesson
  • Company Name : Changsha Weichuang Chemical Co., Ltd.
  • Tel : 86-731-85573222
  • Fax : 86-731-84765733
  • Address : Hunan,Changsha,(Room 1301, Xincheng Dibiao), Crossing of Wanjiali Road and Laodong East Road
  • Country/Region : China

sodium pyrosulfite

sodium pyrosulfite
Product Detailed
we are manufacturer of sodium metabisulphite and you can trust us about quality and price.

Application:bleaching agent for textile fibres;Colors stripper and dechlorination; preparation of Indigo Vat Dye;solubilizing and acidyfing agent for leather industries ;bleaching agent forpaper pulps;preserv -ative and sterilisation agent for food industries


Storage & handling:Store the product in a cool and dry place;prevent from direct sunlight ,water and  moisture; avoid contact with strong acid,oxidants  or poisonous substances. Exposure to moisture will make it oxidze easily to sodium sulphate.Do not store it for long time


 detailed specification of food grade:

ITEMS                                 STANDARD               

Na2S2O5                               98%min                 

OXIDE(CL)                            0.02%max                

SULPHITE(NA2S04)                1.45%max                 

IRON                                      0.001%max               

WATER INSOLUBLE MATTER      0.01%max                 

HEAVY METALS AS PB              0.001%max                   

ARSENIC                                0.0001%max              

PH                                                 3-4.5                   

sodium pyrosulfite

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