sodium hydrosulfite

1.Sodium hydrosulfite 2.in 50/100kg iron drums

Sodium Hydrosulfite Producing Method: Sodium Formate Process

Sodium Hydrosulfite:

Converance:

Quantity/20'FCL: 22MT (440 Drums)

HS Code: 28311000

Producing Method: Sodium Formate Process

Spec.: 74%, 85%, 88%, 90%

Commodity name: Sodium Hydrosulfite

Molecular formula:Na2S2O4

Molecular weight:174

CAS Number 7775-14-6

UN number 1384

Class 4.2

Appearance white free-flowing crystal powderUsage: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. Quality Standard:

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