Sodium Hydrosulfite 85% ,88% 1.CAS NO.: 7775-14-6 2.UN NO.:1384 ... 4.ISO Certificate Sodium Hydrosulfite 85%, 88% 1.Specification:INDEX90%88%85%FOOD ADDITIVENa2S2O4≥90%≥88%≥85%≥85%Fe≤20ppm≤20ppm≤20ppm≤20ppmZincZn ... , bamboo shoots, mushrooms and canned mushrooms. (Good Price)Sodium Hydrosulfite 88%