| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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| PO NO. | JC-6080 | PRODUCTION DATE |
2024-12-21 | EXPIRY DATE |
2026-12-20 |
| PACKING | 25KG BAG | GRADE | INDUSTRIAL GRADE | STANDARD | HG2826-2008 |
TEST ITEMS |
TEST STANDARD |
TEST RESULT |
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| Na2S2O5 | ≥96.5% | 97.42% | |||
| FERRON(Fe) | ≤0.005% | 0.001% | |||
| WATER INSOLUBLE | ≤0.05% | 0.02% | |||
| (As) | ≤0.0001% | <0.0001% | |||
| HEAVY METAL(Pb) | ≤0.0005% | <0.0002% | |||
| CLARITY | PASS | PASS | |||
| APPEARANCE | WHITE OR LIGHT YELLOW CRYSTALLINE POWDER |
PASS | |||
| CONCLUSION |
THE ABOVE PRODUCT COMPLIES WITH INDUSTRIAL GRADE |
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| INSPECTOR: HUANG YUANYUAN CHECKER: WANG MINGJIANG | |||||
1.Main content: The main content of industrial grade sodium metabisulfite is usually not less than 96.0%, and the actual content may vary slightly depending on the production process and manufacturer.
2.Impurity content: Common impurities include iron, heavy metals (such as lead, etc.), water-insoluble substances, etc., and their content is strictly limited. For example, the iron content is generally required to not exceed 0.005%, the heavy metal content (calculated as lead) should not exceed 0.0005%, and the water-insoluble content should not exceed 0.05% to ensure the quality and safety of the product in industrial applications.
Q: What is your company main product?
A: Our main products are calcium chloride, magnesium chloride, sodium chloride, magnesium sulfate, sodium carbonate, sodium bicarbonate etc
Q: How long time you can make the shipping?
A: We can make the shipping within 15 days after confirming the order.
Q: what kind of payment does your company support?
A: L/C, T/T, both accepted if you have other payment, please contact me.
Q: Where is your factory located? How can I visit the factory?
A: Our factory located in WEIFANG, China. It is only two hours from QINGDAO. If you would like to visit our factory, please contact us in advance.
1. Food processing industry: As a food additive, it is mainly used for bleaching, preservation, antioxidation, and freshness preservation of food. For example, in the preservation and processing of fruits and vegetables, it can inhibit microbial growth and enzymatic browning reactions; In the process of wine making, it is used for sterilization and antioxidation, to prevent wine from spoiling and oxidation discoloration; In the processing of candied fruits, dried fruits and other foods, it plays a role in bleaching and preservation. But when using, it is necessary to strictly follow the standards for the use of food additives to ensure food safety.
2. Chemical industry: It is an important reducing agent and sulfonating agent. In the printing and dyeing industry, it is used in the dyeing process of reducing dyes to soluble chromophores, which can better penetrate into the interior of fibers for dyeing; In organic synthesis, as a sulfonating agent, it participates in the sulfonation reaction of certain compounds to prepare organic compounds containing sulfonic acid groups; It can also be used to treat chromium containing wastewater, reducing hexavalent chromium to trivalent chromium for subsequent precipitation removal.
3. Pharmaceutical industry: used in the synthesis and refining process of drugs. For example, in the production of certain antibiotics, vitamins, and other drugs, they are used as reducing agents or antioxidants to prevent the drugs from being oxidized and deteriorated during synthesis or storage, ensuring the quality and stability of the drugs.
4. Paper industry: used for bleaching and steaming processes of pulp. In the bleaching process, it can be used as a reducing agent to remove residual lignin from pulp and improve the whiteness of paper; During the steaming process, it can inhibit the growth of microorganisms, reduce pulp spoilage and deterioration, and help improve the strength and quality of paper.
5. Leather industry: used for processes such as depilation, tanning, and bleaching of leather. During the hair removal process, it can make it easier for hair to fall off from the leather; During the tanning and bleaching process, it plays a reducing and antioxidant role, improving the quality and appearance of leather.
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