Origin China

Specification:

Food Grade
Purity (As Na2SO5) %-------98.0% min
Sulfur Dioxide(SO2)----------65.0% min
Arsenic (As)----------------0.0002% max
Heavy metals (As Pb)----0.0005% max
Selenium (Se)---------------0.0005% max
Iron (Fe)---------------------0.001% max
Water insoluble-------------- 0.02% max
PH value--------------------------4.0-4.8

Industrial Grade
Purity (As Na2SO5) %-------96.0% min
Sulfur Dioxide(SO2)---------65.0% min
Iron (Fe)-------------------0.002% max
Water insoluble---------------0.05% max
PH value---------------------------4.0-4.8

Appearance-----White Crystal or Crystal Power

Application-----For printing and dyeing industry, organic synthesis, printing, leather, pharmaceutical and other sectors; in food processing as preservatives, bleaching agents, osteoporosis agent.

Packing-----packing in 25kg bags, or as your request