Sodium metabisulfite is one kind of sodium salt with a gentle or heavy smell of SO2. Sodium metabisulfite plays important roles in modern industries as a preservative, bleaching agent, leavening agent, antioxidant, color fixative, mold inhibitor, coagulant, dechlorinate agent, cotton fabric cooking agent, reductant, mineral processing agent, concrete water reducing agent, etc.. Sodium metabisulfite can also be used for the production of sodium hydrosulfite, chloroform, phenylpropylsulfone, benzaldehyde, sulfamethazine, metamizole, caprolactam, and etc..
Chemical Property
| CAS No |
7681-57-4 |
| EINECS No |
231-673-0 |
| Molecular Formula |
Na2S2O5 |
| Molecular Weight |
190.107 |
| Melting Point |
150℃ (Decomposed) |
| Density |
1.48 g/cm³ |
| Accurate Mass |
189.898254 |
| Water Solubility |
540g/L (20 ℃) |
Application
Sodium metabisulfite food grade is used in food industry as preservative, bleaching, leavening agent, antioxidant, and color protector.
Antiseptic agent: used for fruit juice, preserves, and canned food, can extend its shelf life and effectively sterilize it.
Bleaching agent: used for flour in the production of pastries and other foods for bleaching.
Leavening agent: the product can make the structure of bread and biscuits become loose, and the taste becomes relatively crispy.
Antioxidant preservatives: the product has good antioxidant and preservation effects on seafood, fruits, and vegetables, etc.
Protector: in the processing and preservation of light colored vegetables, such as mushrooms, lotus roots, water chestnuts, bamboo shoots, yams, etc. Sodium metabisulfite food grade solution can be used as color protection.
Preservative and antiseptic: used in feed field as feed additive.
Reductant: used in water treatment as a reductant. For example, in electroplating wastewater treatment, in the treatment of wastewater containing hexavalent chromium, Sodium metabisulfite food grade can be added first. After a full reduction reaction, polyaluminum chloride or polymeric ferric sulfate flocculant can be added after alkali adjustment, and finally sodium sulfide can be added to remove the heavy metals that have not been settled.
Anti oil oxidants and preservatives: used in cosmetics and skincare products to prevent and delay product deterioration caused by oxidation reactions.
Specifications
| Items |
Specification |
| Purity (As Na2S2O5 ) |
97% Min |
| Sulfur Dioxide (SO2) |
65% Min |
| Heavy Metal (Pb) |
0.0005% Max |
| Arsenic (As) |
0.0001% Max |
| Selenium (Se) |
0.0005% Max |
| Iron (Fe) |
0.002% Max |
| Water Insoluble |
0.02% Max |
| PH Value |
4.0-4.8 |
Package, Loading & Storage
Standard packing: 25 Kg plastic woven bag with PE inner/jumbo bag
Customized packaging accepted
Loading: 25MT with pallet; 27MT without pallet
Storage: Store at a cool, dry, and ventilated storehouse.
The product is with hygroscopicity, packaging should be sealed to prevent air oxidation.
Prohibited to store and transport together with acids, oxidants, and harmful and toxic substances.
Documents
Sodium Metabisulfite Food Grade TDS
FAQs
1. What is minimum order quantity of Tianya’s sodium metabisulfite products?
Our minimum order quantity of sodium metabisulfite is 1 ton, anyway, based cost-effective, we recommend the MOQ of one 20′ container.
2. Is Tianya a manufacturer of sodium metabisulfite or a trading company?
Tianya is a manufacturer of Sodium Metabisulfite products in China, we produce sodium metabisulfite products with more than 20 years with rich experience.
3. What certifications has Tianya’s sodium metabisulfite products got?
Our sodium metabisulfite products have got the certifications of Halal, Kosher, ISO, NSF, etc..
4. What kinds of payment terms do you accept?
We can accept the common payment terms TT, L/C, DP, DA, etc..
5. How long is the lead time of your sodium metabisulfite products?
We always keep regular quantity of stock goods, and we produce fresh sodium metabisulfite goods based customers’ orders. We prepare goods and book shipping within one week, usually goods can be delivered within 7 to 10 days after order confirmation.
6. How do you transport sodium metabisulfite goods to customers?
The available modes of transportation includes transportations by sea, by air, by railway, by truck, etc.. If conditions permit, sea shipment is the most preferred mode of transportation by customers, considering the most economical transportation of bulk chemicals.
7. How long can I receive your reply after I send an inquiry of sodium metabisulfite or ask some questions?
We can reply to you within 2 hours during working hours, within 24 hours during nonworking time.
8. What is the price of sodium metabisulfite?
The price of sodium metabisulfite is influenced by some factors, such as raw materials, freight, exchange rate, off-season and peak-season, etc.. Tianya is the leading manufacturer of sodium metabisulfite in China, we always keep offering highly competitive price to customers.
9. What is the raw materials of sodium metabisulfite products?
The main raw materials of sodium metabisulfite products are soda ash and sulfur.
10. How long is the shelf life of sodium metabisulfite?
The shelf life of sodium metabisulfite is 2 years under the premise of following storage rules.
11. What is the standard package of your sodium metabisulfite products?
Our standard package of sodium metabisulfite products are 25 Kg bag, or jumbo bag. Jumbo bags includes 1000 Kg, 1100 kg, 1200 Kg, 1250 kg bag.
12. Can you accept customized packages and labels?
Yes, we can supply customized packages and labels based customers’ requirements.
13. Can you accept OEM/ODM?
Yes, OEM/ODM is available.
14. How many tons of sodium metabisulfite can one container load?
For sodium metabisulfite products loading, 20′ container is recommended. One 20′ container can load 27 tons sodium metabisulfite without pallet, 25 tons with pallet. Anyway, during actual loading, we remind customers to note limited max weight regulated by local road transportation and/or destination ports.
15. What kinds of pallets can you supply if necessary?
For sodium metabisulfite products, we supply the two kinds of standard pallets: plywood pallets and wooden pallets. Customers also can specify their preferred pallets types.
16. Does the supplied pallets for sodium metabisulfite have fumigation certification?
Yes. For plywood pallet, it is fumigation free. For wooden pallet, it is given fumigation. They can totally meet regulations of related countries.
17. Do you have food manufacturing license of sodium metabisulfite?
Yes, we have the food manufacturing license of sodium metabisulfite, and we produce sodium metabisulfite food grade products with high quality.
18. Do you accept to visit or inspect your factory?
Yes, we welcome customers to visit us and inspect our factory.
19. How will you handle it in case your goods has some problems?
For the quality of our sodium metabisulfite products, until now it is zero compliant. In case any problem, we have complete after-sales service policy.
20. What is the differences of your sodium metabisulfite food grade and industrial grade?
Sodium metabisulfite food grade has the requirements for clarity and heavy metal (lead) content, while industrial grade doesn’t have the requirements for these two items. For detailed specifications differences, pls view Specification of Sodium Metabisulfite Food Grade & Specification of Sodium Metabisulfite Industrial Grade. In addition, sodium metabisulfite food grade has the specified regulations for production equipment and workshop.
