1. Sodium Hydrosulfite (sodium hydrosulphite) 2. Appearanc:hite free-flow crystal powders 3. Cas NO.: 7775-14-6 Sodium hydrosulphiteQuality standard HG/2074-2004, JISK1476-1995, HG/T2682-1995Molecular formula Na2S2O4Appearancewhite free-flow crystal powdersPacking: 15kg, 25kg, 50kg or 100kg net in iron drums with double inner polybagsApplication: 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, its 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 products4. 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 specifications

INDEX	90%	88%	85%	FOOD ADDITIVE
Na2S2O4	≥90%	≥88%	≥85%	≥85%
Fe	≤20ppm	≤20ppm	≤20ppm	≤20ppm
ZincZn	≤1ppm	≤1ppm	≤1ppm	≤1ppm
Other heavy metalcalculated as Pb	≤1ppm	≤1ppm	≤1ppm	≤1ppm
Water Insolubles	≤0.05%	≤0.05%	≤0.05%	≤0.05%
Shelf Life(month)	12	12	12	12.

Sodium Hydrosulfite 88%