| CAS No.: | 7681-57-4 |
|---|---|
| Formula: | Na2s2o5 |
| EINECS: | 231-673-0 |
| Purity: | 96.5%Min |
| Type: | Sodium Sulfate |
| Appearance: | Powder |
| Samples: |
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| Customization: |
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Audited Supplier Sodium Metabisulfite SMBS Sodium Metabisulphite 98% Food tech Grade Cas no:7681-57-4Product Descriptio
Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.
Usage:
Chemical industry
It is used for the production of insurance powder, sulfamethazine, analgin, caprolactam, etc., as well as the purification of phenylpropane sulfone and benzaldehyde. The photographic industry is used as a fixative for the fixer. The perfume industry is used to produce vanillin. Used as a preservative for brewing industry, a rubber coagulant and a bleaching agent for cotton bleaching. Organic intermediates, dyes, and tanning are used as reducing agents for electroplating, wastewater treatment in oil fields, and as a mineralizer for mines.
industry
It is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; as a preservative, bleaching agent and loosening agent in food processing.
Used as a chemical reagent
(Printing and dyeing, photography, etc.), used as bleach mordant, reducing agent rubber coagulant, also used in organic synthetic pharmaceuticals and spices.
|
INDEX OF SODIUM METABISULFITE |
CONTENT |
|
|
FOOD GRADE |
INDUSTRIAL GRADE |
|
|
PURITY (AS NA2S2O5) |
97%MIN |
96%MIN |
|
SO2 |
65.0%MIN |
65%MIN |
|
AS |
0.0002% MAX |
- |
|
HEAVY METALS (AS Pb) |
0.0005% MAX |
- |
|
SE |
0.0005% MAX |
- |
|
IRON (Fe) |
0.001% MAX |
0.002% MAX |
|
WATER TREATMENT |
0.02% MAX |
0.05% MAX |
|
PH VALUE |
4.0-4.8 |
4.0-4.8 |
|
PURITY (AS NA2S2O5) |
97% MIN |
96% MIN |
Yantai Wenxu Industrial Co., Ltd. was founded in 2015. It locates at Yantai city of Shandong province, which is about one hour far from Qingdao city by fast train. So it's quite convenient to the Tsingtao Port,Tianjin Port and Shanghai Port,or to the customers' designated port.
We have cooperated with more than 5,000 big or small companies,export to the 57 countries in Europe, Australia, America, south Africa, etc. We specialized in manufacturing Polyaluminium Chloride, Polyacrylamide, Activated Carbon, Basic Polyaluminium Chloride, and other Water Treatment Agent, Filter Material, Activated Carbon, Filling Material. We have a series of complete water treatment supporting service system,which are widely used in potable water,oil field,textile,painting and dyeing industry, metallurgy, electric plant,industry polluted water and city life water. We produce Polyaluminium Chloride(PAC),Polyacrylamide(PAM),Basic Polyaluminium Chloride,Poly aluminium,Ferrous Sulphate,Coal-based Activated Carbon,Coconut Shell Activated Carbon an so on.
Our company pays much attention to technology,quality and credit especially. We have faith in "quality first and customer supreme". We take extreme care to maintain high quality. We assure regular supply and prompt delivery. We are always committed to our clients and believe that we'll have-long term cooperation. Our products and after-sale services have been highly appraised by our customers at home and abroad. We offer you the lowest price and top quality .When you choose us, you are accessing a reliable and professional partner. We hope to establish lasting friendships and long-term cooperation relationships with you sincerely.
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