... in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .2. It is also used ... is used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products, 4. It is used ... food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, ...