Sodium Hydrosulfite 85% ,88% 1.CAS NO.: 7775-14-6 2.UN NO.: ... DRUMS 4.ISO Certificate Sodium Hydrosulfite 85%, 88% 1.Specification: INDEX90%88%85%FOOD ADDITIVENa2S2O4≥90%≥88%≥85%≥85%Fe≤20ppm≤20ppm≤20ppm≤20ppmZincZn ... bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned ...