Sodium metabisulfite food grade and industrial grade Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde. The hide profession employ to do to molt dose and pliable dose and waterrproof dose; sewage treatment, and so on .
Items | Food grade | Industrial grade |
Na2S2O2(%) | 97 | 96.95 |
SO2(%) | 66.11 | 66.11 |
As(%) | 0.00012 | 0.00012 |
Pb(%) | 0.0003 | 0.0003 |
Se(%) | 0.0001 | 0.0001 |
Water insoluble | 0.011 | 0.011 |
Fe(%) | 0.0010 | 0.0010 |
PH | 4.4 | 4.4 |
Package | Ton bag/25kg bag | Ton bag/25kg bag |