Sodium metabisulfite 98.5% food grade 1.Packing:25kg/bag or 50kg/bag ... .Supply Ability: 10,000 Ton per month; 3.ISO HACCP; Sodium metabisulfite 98.5% food grade Brief introduction: Molecular Formula:Na2S2O5 Molecule Weight ... a polypropylene overbag, paper-plastic composite bag, kraft bag, etc. Sodium metabisulfite 98.5% food grade