... : 10,000 Ton per month; 3.ISO HACCP; Sodium metabisulfite 98.5% food grade Brief introduction: Molecular Formula:Na2S2O5 Molecule Weight ... :White or light yellow crystalline powder Specification: ITEMIndustrial gradeFood gradeAssay:96% min96% minSO2 content65% min65% minIron:0.005% max0.005% ... polypropylene overbag, paper-plastic composite bag, kraft bag, etc. Sodium metabisulfite 98.5% food grade