Sodium Metabisulfite By Shandong Chainwin Chemical Co.,ltd.

Supported by the team of experts, we are the leading Exporter, Manufacturer & Supplier of Sodium Metabisulfite in Jinan, Shandong, China.
1.Molecular Formula : Na2S2O5

2.Molecule Weight : 190.12

3.CAS NO .: 7681-57-4

4. Appearance : White Free Flowing Fine Crystal or Powder

5.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.

6.Specification:
ItemQuality Index
Food GradeIndustry Grade
Purity ( As Na2S2O5)98.0% min96.0% min
Sulfur Dioxide( SO2)65.0% min65.0% min
Arsenic ( As )0.0002% max-
Heavy metals ( As Pb )0.0005% max-
Selenium (Se )0.0005% max-
Iron (Fe)0.001% max0.002% max
Water insoluble0.02% max0.05% max
PH value :4.0-4.84.0-4.8

7.Application:
(1)sodium metabisulfite 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)sodium metabisulfite 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;