Industrial Grade CAS 7681-57-4 Sodium Pyrosulfite From China Supplier
| Price: |
US $ 230-300/Ton |
| Min Order: |
25/Ton |
| Pay Type: |
L/C,T/T |
Product Specifications
| Prod Model: |
kaiteda1002356 |
| Molecular Formula: |
Na2s2o5 |
| Molecule Weight: |
190.10 |
| Grade Standard: |
Industrial Grade |
| Type: |
Sodium Pyrosulfite |
Product Description
Product Description
1.Product Description
Smbs/Sodium Metabisulphite/Sodium Pyrosulfite/Tech Grade 96%
Chemical Name : Sodium Pyrosulfite, sodium metabisulfite
CAS No : 7681-57-4
Molecular Formula:Na2S2O5
Molecule Weight:190.10
Appearance:White or light yellow crystalline powder
2.Property: white or light yellow crystal powder, a strong smell of sulfur dioxide,relative density is 1.4, easy to dissolve in water and glycerin, water solution. It has acidity,and its solubility will become large while raising the temperature and is less to dissolve in ethanol.
3.Specification For Food Grade and Industry Grade :| Item | Quality Index |
| Food Grade | Industry Grade |
| Purity ( As Na2S2O5) | 98.0% min | 96.0% min |
| Sulfur Dioxide( SO2) | 65.0% min | 65.0% min |
| Arsenic ( As ) | 0.0002% max | - |
| Heavy metals ( As Pb ) | 0.0005% max | - |
| Selenium (Se ) | 0.0005% max | - |
| Iron (Fe) | 0.001% max | 0.002% max |
| Water insoluble | 0.02% max | 0.05% max |
| PH value : | 4.0-4.8 | 4.0-4.8 |
| Remark : | Conformed with FCC V and E 223 Standard |
4.Specification for Pharmaceutical Grade and Photo Grade
| Item | Quality Index |
| Pharmaceutical Grade | Photo Grade |
| Purity ( As Na2S2O5) | 98.0% min | 98.0% min |
| Sulfur Dioxide( SO2) | 65.0% min | 65.0% min |
| Thiosulphate ( As S2O3) : | 0.05 % max | 0.05% max |
| Chloride ( As CL-) : | 30 ppm max | 50ppm max |
| Arsenic ( As ) : | 1ppm max | 1ppm max |
| Lead ( Pb ) : | 1 ppm max | 2ppm max |
| Copper (Cu) : | 1 ppm max | 1ppm max |
| Iron (Fe ) : | 5 ppm max | 5ppm max |
| Mercury (Hg) : | 0.1ppm max | 1ppm max |
| Chromium (Cr) : | 1 ppm max | - |
| Selenium (Se ) : | 1 ppm max | 5ppm max |
| Zinc (Zn) | 1 ppm max | 1ppm max |
| Cadmium (Cd ) | 1ppm max | - |
| Nickel (Ni) | 1ppm max | - |
| Na2SO3 + Na2SO4 | 1.5% max | - |
| PH value : | 4.0-4.8 | 4.0-4.8 |
| Remark : | Conformed with USP standard |
5.Application:
(1) Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc); Loose agent (e.g. bread, cracker etc); Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).
(2) Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde
The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .
(3) Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.
(4) Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose..6.Packaging:Packing: Packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer's requirement.
7. Service
We offer clients value-added services to ensure the maximization of benefits, including the following aspects :
1. Special inspection is provided according to the request of customers from certain countries.
2. The professional logistician in KAIDATE Chemical provides appropriate logistic scheme for the clients, and ship the goods to the specified port or warehouses as soon as possible.
3. KAITEDA Chemical offers settlement services such as US dollars, the pound, euro, and other currencies, to minimize the risk of the exchange rate for dollars.
4. KAITEDA Chemical offers information and photographs along the whole process, from the production to the logistics.
5. The largest local manufacturers provide packaging services for products with various materials and specification standard to meet the needs of customers.8.contact
Shandong Kaiteda Chemical Co., Ltd. Was founded in 2009, which is a world famous chemical supplier. With the goal of customer satisfaction, Kaiteda focuses on FERROUS SULFATE, MAGNESIUM SULFATE, PAC, ALUMINIUM SULPHATE and other some Fine chemical products' production, research, marketing and investment, to provide chemical purchasing one-stop service for the whole industry chain.
Kaiteda chemical is located in the beautiful coastal city, Zouping, and our wholly owned factory is located in Linchi, Shandong province. Combined the advantages of raw materials in Shandong and exporting transportation in Qingdao. Kaiteda is famous for high quality products and excellent services. Now we are stable supplying our products to more than 60 countries and regions which are located in the Middle East, South America, North America, Southeast Asia, Africa, Europe and Oceania. KAITEDA chemicals factory mainly produces Ferrous sulfate (300 MT/ Year), Dmdaac (150, 000 MT/ year), PAC (200, 000 MT/ year), Aluminium sulphate (100, 000MT/year)
We have a sisiter company: Spring chemical industry Co., Ltd. www.springchemical.com, one professional at melamine, ammonium salt, sodium salt and White fused alumina in China.
