Product name: Sodium Hydrosulfite 

Alias: Insurance powder  

Appearance: white crystalline powder  

Chemical Abstract No. (CAS No.) : 7775-14-6  

Chemical formula: Na2S2O4  

Product quality index (standard)/specification: 85% HG/T2074-2011  

Product Application:  

Mainly used to prevent industrial reductive dyeing, as well as food bleaching, organic synthesis, etc., it is most suitable for wood pulp and paper bleaching.