--
Sodium pyrosulfite is white or yellow crystalline powder or small crystal, with a strong smell of SO2, specific gravity of 1.4, soluble in water, the aqueous solution is acidic, contact with strong acid will release SO2 and generate the corresponding salt, long placed in the air, it will be oxidized into Na2S2O6, so the product can not be stored for a long time.So above 150 degrees Celsius, we're going to solve for SO2.
Dezhou Kevin Group Work Win Co., Ltd.. (the Company), located in dezhou City, Shandong Province, was founded in 2003, and it is a raw material supplier for the global organic chemical industry.The Company also participates in the production of small quantity of high value-added chemicals and intermediates.
Our products include solvents, antifreeze, preservatives, pigment, chemicals intermediates, etc., widely used in agriculture, medicine, food sanitation and other fields
Product name:Sodium Metabisulphite
CAS No.: 7681-57-4
Molecular Formula:Na2S2O5
Molecule Weight:190.10
Appearance:White crystalline powder
HS Code: 28321000
Quality standard: GB1893-86
Component | Range | Typical |
Assay(Na2S2O5 ) | 96.5% min. | 96.54% |
Iron content(base on Fe) | 0.005% max. | 0.005% |
water insoluble matter | 0.05% max. | 0.05% |
Arsenic content(base on As) | 1 ppm max. | 1ppm |
Pb | 10 ppm max. | 5ppm |
Food grade:
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 etc);
4. Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc).
Industrial grade:
1. Mordant: printing and dyeing;
2. Bleach Agent: paper pulp, bamboo and timber, waste water treatment;
3. Rubber solidifying agent;
4. Perfume industry is served as hydrocarbon perfume aldehyde.
25kg Craft paper bag with P.E bag inner
Recommended storage periods: 2 years
Stored in original packaging in cool and dry place.
Port:Qingdao
1. Your inquiry related to our products or prices will be replied in 12hours.
2. Well-trained and experienced staffs to answer your enquires in fluent English.
3. All our products have high quality warranties.
4. Sample order can be delivered within 3 working days, small order 3- 5working days, mass order 7-10working days.
5. Samples can be offered by free,customers just need to pay the freight.But the freight can be returned to our customer after he/she places formal order with us.
Q1: Are you a manufacture or trader?
A1: We are a Manufacture in China.
Q2: May I have a sample order?
A2: Yes ,we welcome sample order to test and check our quality.Contact Us and tell me your requirement of the product you want.We can provide free sample,you just provide us the freight collect.
Q3: What is your acceptable payment term?
A3: L/C,T/T,Western Union,Paypal.
Q4: How about the validity of the offer?
A4: Usually our offer is valid for 1 week. However, validity might vary between different products.
Q5: What documents you provide?
A5: Usually, we provide Commerical Invoice, Packing List, Bill of loading, COA, MSDS and Origin certificate. Please let us know if you need additional documents.
Q6: What is loading port?
A6: Usually loading port is Qingdao port,we also can ship from other ports if you need.
Email: bing@groupworkwin.com
Website:www.wchemv.com
Whatsapp: +8613963692050