Sell sodium pyrosulfite

详情

Item                     Food Grade             Industry Grade
Purity(As Na2S2O5)        *8.0%min               *6.0%min
Sulfur Dioxide(SO2)       *5.0%min               *5.0%min
Arsenic(As)              0.***2%max                 -
Heavy metals(As Pb)      0.***5%max                 -
Selenium(Se)             0.**1%max                  -
Iron(Fe)                 0.**1%max              0.**2%max
Water insoluble          0.*2%max               0.*5%max
PH value:                4.**4.8                 4.**4.8