... vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching . Sodium HydrosulphiteMolecular Formula:Na2S2O4CAS No: 7775-14-6EINECS No: 231-890 ... It is used as reducing agent in chemical industry.6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent ... caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms. Sodium Hydrosulphite