Description
Sodium Hydrosulphite Quality standard: HG/********4, JISK********5,
HG/T********5 Molecular formula: Na2S2O4 Appearance: White
free-flow crystal powders Packing: *5kg, *5kg ,*0kg or **0kg net in
iron drums with double inner polybags. Application: 1 Widely used
in textile industry for vat dyeing, reduction cleaning, printing
and stripping, textile textile bleaching . 2 It is also used in
bleaching paper pulps, especially mechanical pulps, it’s the most
fittable bleaching agent in pulps. 3 It is used in bleaching kaolin
clay, fur bleaching and reductive whitening, bleaching of bamboo
products and straw products, 4 It is used in mineral, the compound
of thiourea and other sulphides. 5 It is used as reducing agent in
chemical industry. 6 Sodium hydrosulfite food additive grade is
used in foodstuffs, as bleaching agent and preservative dried
fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar,
caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned
mushrooms. Product Specification INDEX *0% *8% *5% FOOD ADDITIVE
Na2S2O4 ≥*0% ≥*8% ≥*5% ≥*5% Fe ≤*0ppm ≤*0ppm ≤*0ppm
≤*0ppm Zinc（Zn） ≤1ppm ≤1ppm ≤1ppm ≤1ppm Other heavy
metal （calculated as Pb） ≤1ppm ≤1ppm ≤1ppm ≤1ppm Water
Insolubles ≤0.*5% ≤0.*5% ≤0.*5% ≤0.*5% Shelf Life(month) *2
*2 *2 *2
