Sodium hydrosulfite for bleaching

Post Date:
Mar 29,2016
Expiry Date:
Mar 29,2017
Detailed Description:
Cas No. :7775-14-6 Quantity: 3000Metric Tons
Specs:90% Min.
Price:Negotiable USD Metric Tons
Payment Method: T/T
Sodium hydrosulfite
Na2S2O4: 90% Min.
Fe: 20ppm Max.
Zinc: 1ppm Max.
Other heavy metal calculated as Pb: 1ppm Max.
Water Insoluble: 0.05% Max.
Shelf Life: 12 month

Application:
1. Used as reducer, dyes auxiliary of dyeing industry, synthetic dyes and intermediates.
2. Used as bleaching agent of paper pulp in paper-making industry.
3. Used as bleaching agent of china clay in the ceramics industry.
4. Used as deoxidizer of rubber and styrene butadiene rubber synthesis, developer in photo-taking industry.
5. Used as reducing agent, bleaching agent in the industries including pharmacy, food, metallurgy and leather

Packaging: 50kg/drum or as customers request.
CAS Registry Number:
7775-14-6
Synonyms:
;Sodium dithionite hydrate;Sodium hydrosulphite;Sodium dithionite;disodium dithionite;
Molecular Formula:
Na₂O₄S₂
Molecular Weight:
174.1071
Molecular Structure:
Hazard Symbols:
Xn:Harmful;
Risk Codes:
R22:;
R31:;
R7:;
Safety Description:
S26:;
S28A:;
S43E:;
S7/8:;

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