Classification: Sulphate	Type: Sodium Hydrosulfite	CAS No.: 7775-14-6
Other Names: Na2S2O4	MF: Na2S2O4	Place of Origin:Jiangsu China (Mainland)
Grade Standard: Food Grade, Industrial Grade	Purity: 90% 88% 85%	Appearance: white free-flowing crystal powder
Application: textile and dyeing	Brand Name:OUMEIYA	Model Number: Sodium hydrosulfite

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INDEX	90%	88%	85%	FOOD ADDITIVE
Na2S2O4	≥90%	≥88%	≥85%	≥85%
Fe	≤20ppm	≤20ppm	≤20ppm	≤20ppm
ZincZn	≤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

Usage:
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.