Sodium Hydrosulphite from 85%-90%, contact Ms.Li at 135.1614.1213

KAIFENG CHEMICALS

Cell: Ms.Lee at 135.1614.1213,

QQ: 1548035742

Mail: liufy at hhkfchem dot com

MSN: gjtrade at hotmail.com

SKYPE: Genevieve.chem

Product: Sodium Hydrosulphite

 Quality standard:HG/2074-2004, JISK1476-1995, HG/T2682-1995Molecular formula:Na2S2O4Appearance:white free-flow crystal powdersPacking: 15kg, 25kg ,50kg or 100kg 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 specifications: 

INDEX	90%	88%	85%	FOOD ADDITIVE
Na2S2O4	≥90%	≥88%	≥85%	≥85%
Fe	≤20ppm	≤20ppm	≤20ppm	≤20ppm
Zinc(Zn)	≤1ppm	≤1ppm	≤1ppm	≤1ppm
Other heavy metal(calculated as Pb)	≤1ppm	≤1ppm	≤1ppm	≤1ppm
Water Insolubles	≤0.05%	≤0.05%	≤0.05%	≤0.05%
Shelf Life(month)	12	12	12	12

 (Analysis report): 

ITEM	90%	88%	85%	FOOD ADDITIVE
Na2S2O4	91.00%	89.50%	86.60%	86.96%
Na2S2O5	6.39%	6.64%	6.82%	6.54%
Na2CO3	1.10%	2.50%	5.70%	5.58%
Na2S2O3	0.18%	0.20%	0.41%	0.38%
Na2SO3	0.22%	0.21%	0.32%	0.36%
Fe	14ppm	15ppm	16ppm	11ppm
Water Insolubles	0.05%	0.04%	0.04%	0.01%

Sodium Hydrosulphite 88%