Sodium Hydrosulfite88%/90%

Chinese name:Sodium disulfite
Foreign name:Sodium hydrosulfite
Alias:Insurance powder; Sodium hyposulfite; Sodium bisulfate;Sodium dithionite hydrate;  Sodium hydrosulphite;  Sodium dithionite;  disodium dithionite 
CAS number:7775-14-6
Molecular formula:Na2O4S2
Molecular weight:174.1071
EINECS Login number:231-890-0
Melting point:300 ℃
Ignition temperature:250 ℃
Description
1.Widely used in printing and dyeing industry, such as cotton fabric aid and silk fabric bleaching. Also used in medicine, mineral processing, copperplate printing. Paper industry used as bleach, etc. 
2.Food grade products are used as bleach, preservatives and antioxidants. Light industry for soap, oil ester, pulp bleaching. 
3.Chemical industry is used in the manufacture of glyph powder, sodium thiosulfate, thiourea, thiobenzoic acid, hexaoxane (medicine), synthetic dyes, also used in copperplate printing and analytical reagents.