China supply Sodium Metabisulfite CAS 7681-57-4 for for Food Additives
Product Description
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.It is used as preservative, bleaching agent, and swelling agent in food processing.
| Items |
Standard |
| Sodium metabisulfite % |
97min |
| Water insoluble % |
0.01max |
| Fe % |
0.002max |
| As % |
0.00006max |
| Heavy Metals(Pb) % |
0.0003max |
| PH value |
4.0-4.6 |
Application
1.It is used as bleaching agent, mordant, reducing agent, rubber coagulant, and also used in organic synthesis, pharmacy, spices, etc
2.It is used as chromatographic analysis reagent, antiseptic and reducing agent, dye and pharmaceutical industry
3.Sodium pyrosulfite has stronger reducibility than sulfite, and its effect is similar to that of sodium sulfite. Our country stipulates that it can be used for candied fruits, biscuits, sugar, crystal sugar, malt sugar, candy, glucose, liquid glucose, bamboo shoots, mushrooms and canned mushrooms, with the maximum use amount of 0.45g/kg. The residue (calculated by SO2) of candied fruits, bamboo shoots, mushrooms and canned mushrooms, grapes and blackcurrant concentrated juice is less than 0.05/kg; The residue of biscuits, sugar, vermicelli and other varieties is less than 0.1g/kg; The residual amount of liquid glucose shall not exceed 0.2g/kg.
4.Food industry is used as bleach, antiseptic, loose agent, antioxidant, color fixative and fresh-keeping agent.
5.The pharmaceutical industry is used to produce, phenylsulfone and benzaldehyde. The rubber industry is used as a coagulant. The printing and dyeing industry is used as a dechlorination agent after bleaching of cotton cloth and a cotton scouring auxiliary. The leather industry is used for leather treatment, which can make the leather soft, plump, tough, waterproof, folding resistant, wear-resistant and other properties. Chemical industry is used to produce hydroxyvanillin, hydroxylamine hydrochloride, etc. The photosensitive industry is used as developer, etc.
6.For analysis. preservative. Reducing agent. Antioxidant.
Packaging & Shipping
Company Profile
Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals. Main products are cas: 6080-56-4, 2-phenylacetamide (cas103-81-1), After many years of efforts, we have established stable and friendly business relations with dozens of European and American pharmaceutical companies, multinational chemical companies and importers.
Our company possesses the right of self-support import & export, a strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.
Our Advantages
1) Timely communication, reply within 12 hours.You can leave any messages on our whatsapp or send email to us.
2)Selecting raw materials strictly,our products are the highest purity.
3)Reasonable and competitive price.
4) Free sample for your evaluation.Customers only need to undertake the shipping fee for delivery the samples to your destionation.
5)OEM/ODM Available.Trial order is available for testing after samples.
6) Packaging can be customized according to each buyers' special request.
We guarantee that your package will pass 100% through the Mexico US, UK, Australia, Netherlands, Canada, France, Germany, Spain, Belgium, Sweden, Poland, Russian, Ukraine, Kazakhstan, Czech Republic, Slovakia, Portugal.
We have freight forwarders in these countries, and our customs clearance company will clear your parcels without any customs issues, sometimes even 1000 kg. Door to door service. Make sure you receive 100% of the goods. Let you have a good experience of our strong freight capacity.
After Sales Service
1)Best quality in your requirement
2)Competitive price in china market
3)Mature technical support
4)Professional logistic support
5 )Full experience of large numberscontainers loading in chinese sea port
6 )Fast shipment by reputed shipping line
7) Packing with pallet as buyer's special request
8) Best service after shipment.
9) Cargoes together with container after-sales service available
10) Full experience in export
11)Raw materials from chinese origin
FAQ
Q:How can I get the price?
A:We usually quote within 24 hours after we get your inquiry.
If you are very urgent to get the price, please email us or contact us in other ways so that we can offer you a quote.
Q:What is the way you ship?
A:Express: FedEx, UPS, EMS, DHL, USPS, TNT, DPD, Aramex etc
Our way of shipping the products is universal and secure.
The company name and other contents related to pharmacy are not written on the package slips.
The way of packing is regularly changed for a secure delivery.
The packages are small in order to avoid unwelcomed questions . If the order is big, then it will be divided into two or more packages.
Q:What is your lead time?
A:It depends on the order quantity and the season you place the order.
Usually we can ship within 7-15 days for small quantity,and about 25 days for large quantity.
Q:Can the packages be trackable?
A:YES, we provide tracking number and you can track on internet.
Q:Where do you ship to?
A:Worldwide.
Q:What is your lead time?
A:It depends on the order quantity and the season you place the order.
Usually we can ship within 7-15 days for small quantity,and about 25 days for large quantity.
Q:Do you offer domestic shipping/remail shipping?
A:Yes we can ship to USA/UK/Canada/Australia/Germany etc warehouse first then to you.
Q:Do you ensure your packing , what about customs, what happens if the package is retained?
A:We concern a lot about our safety system, we pack the orders as secure as possible. If a package is seized at customs, reships of seized orders will be done provided you have a copy of the letter to show us. If you receive a seizure letter, please contact us immediately with a scanned copy of the seizure letter, and also a new address to have your order reshipped to.
Q:What is your payment term?
A:T/T, L/C at sight.
Q:Which payment options are available?
A:Bitcoin
Western Union
Bank wire
MoneyGram
Q:How do you make our business long-term and good relationship?
A:We keep good quality and competitive price to ensure our customers benefit ;
We respect every customer as our friend and we sincerely do business and make friends with them,no matter where they come from.
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