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Sodium Metabisulfite

Sodium Metabisulfite

Category :

Inorganic chemicals

CAS NO : 7681-57-4
EC NO : 231-673-0
Molecular Formula : Na2S2O5
Main Specifications : 97%
Synonyms : Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi;Metabisulfite Sodium;Sodium Metabisulfite (Food Grade);
Sodium Metabisulfite
Package: Net 25/50/1000kg in PP bag
Uses : 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 stapk; Treatment agent of waste water; Rubber solidifying agent Per
Molecular Structure:Sodium Metabisulfite 7681-57-4
Product description:
UN NO./H.S CODE PURITY Hazard Class WEIGHT QUANTITY/20' FCL
283210 97.0% NO 25KG Bag 26MT
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.
Molecular Formula : Na2S2O5
Molecule Weight : 190.12
CAS NO .: 7681-57-4
Appearance : White Free Flowing Fine Crystal or Powder
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.
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
 
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
 
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.
Storage: Store the product in a dry and cool place.
If you are sourcing Sodium Metabisulfite from China ,just feel free to inquire
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Contact us
Company：
    Weifang Haiye Chemistry And Industry Co.,Ltd
Contact：
    Tina Huang
Phone：
+86-15853290396/13953256385
Mobile phone：
Fax：
 +86-532-68966010
E-mail：
 sales@haiyechem.com
Website：
 http://www.haiyechem.com
Address：
 South of Lianmeng road,East of Dadi Road,houtown,Shouguang city,China
Zip Code：
 266200
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