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Molecular Formula Na2S2O5
Molecule Weight 190.1065
CAS NO 7681-57-4
EINECS 231-673-0
Sodium Metabisulfite
Description: Sodium Metabisulfite is 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.
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Synonyms |
Sodium pyrosulfite; disodium disulphite; Sodium metabisulphite; Sodium disulphite; Sodium pyrosulphite; SODIUM DISULFITE; disodium oxidosulfanesulfonate oxide; Sodium Metabi |
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Molecular Formula |
Na2S2O5 |
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Molecule Weight |
190.1065 |
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CAS NO |
7681-57-4 |
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EINECS |
231-673-0 |
Specification For Food Grade and Industry Grade
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Item |
Specifications | |
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Food Grade (FCC, E223) |
Industry Grade | |
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Appearance |
White Free Flowing Fine Crystal or Powder | |
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Purity ( As Na2S2O5) |
98.0% min |
96.0% min |
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Sulfur Dioxide( SO2) |
65.0% min |
65.0% min |
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Arsenic ( As ) |
0.0002% max |
- |
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Heavy metals ( As Pb ) |
0.0005% max |
- |
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Selenium (Se ) |
0.0005% max |
- |
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Iron (Fe) |
0.001% max |
0.002% max |
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Water insoluble |
0.02% max |
0.05% max |
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PH value |
4.0-4.8 |
4.0-4.8 |
Uses:
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; Treatment agent of waste water; R ubber 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 .