| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
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1. Chemical Name: sodium metabisulfite
2. Molecular Formula: Na2S2O5
3. Molecular Weight: 190.107
4. CAS: 7681-57-4
5. EINECS: 231-673-0
6. Expiration: 24 months
7. Character: It is white or yellow crystalline powder or small crystal, with a strong smell of sulfuric acid, soluble in water. The aqueous solution is acidic. When it contacts with strong acid, it releases sulfuric acid and generates the corresponding salts. Keeping in air, it oxidizes to Na2S2O6, so the product cannot be stored for a long time. It is higher than 150 degrees Celsius, that is to decompose sulfuric acid.
8. Usages: It is used as preservative, bleaching agent, and swelling agent in food processing.
1.Bleach agent (e.g. candies, cake, bamboo shoots, etc);
2.Loose agent (e.g. bread, cracker etc);
3.Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc);
4.Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).
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Item |
Quality Index
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Food Grade
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Industry Grade
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Purity ( As Na2S2O5) |
98.0% min
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97.0% min
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( SO2) |
65.0% min
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65.0% min
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( As ) |
0.0002% max
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-
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Heavy metals ( As Pb ) |
0.0005% max
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-
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(Se ) |
0.0005% max
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-
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Iron (Fe) |
0.001% max
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0.002% max
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Water insoluble |
0.02% max
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0.05% max
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PH value : |
4.0-4.8
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4.0-4.8
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Remark : |
Conformed with FCC V and E 223 Standard |
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PACKING
Packing: 25kgs PP+PE bag or 25kgs paper bag with pallets;
Delivery time: It depends on quantity, stock and production schedule.
1. 25kgs PP+PE bag or 25kgs paper bag
2. 25kgs PP+PE bag or 25kgs paper bag on pallets
3. Customized packing is also available.
SHIPPING
Different transport ways, shipped by sea, air, train or express.
You are welcome to visit our factory at your convenience.
1. Your inquiry will be replied within 4 hours. (Online service)
2. Free samples can be sent on request.
3. Small quantity is also available. The MOQ is 25kgs.
4. We have more than 10 years experience in sales and production.
5. Customized packaging and production are available.
6. Your products can be delivered on time.
7. We have professional forwarders in different ports.
8. Different payment terms can be chosen like L/C, D/P, T/T, Paypal, Credit card or else.
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