... Stock Price 3. ISO9001:2000 4.Quick Shipment Product Name: sodium hydrosulphite 88%Specifications:ItemsIndexTech GradeFood GradeNa2S2O4, % ≥85889085Fe, ppm ≤202020--- ... It is used as reducing agent in chemical industry.6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching ... caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms. sodium hydrosulphite 88%