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Sodium metabisulfite

Sodium metabisulfite

Synonyms Disodium Pyrosulfite; Sodium disulfite; Sodium Pyrosulfite

CAS Number: 7681-57-4 Molecular Formula: Na2S2O5 Molecular Weight: 190.095 g/mol

EC Number: 231-673-0 MDL Number: MFCD00167602

SKU 02191438-CF
$34.35
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Description

Product Description

Sodium Metabisulfite

Application Notes

Sodium metabisulfite is used as an active ingredient in campden tablets, as a cleaning agent for potable water reverse osmosis membranes, as a preservative and an antioxidant in food. It also acts as a corrosion inhibitor in oil and gas industry, as a bleaching agent in the production of coconut cream, as the source of sulfur dioxide and in the destruction of cyanide in commercial gold cyanidation processes. It is utilized in the precipitation of gold from auric acid as well as in the waste water treatment to remove hexavaent chromium as trivalent chromium by precipitation after reduction. Further, it is used in photography. In addition, it plays as an oxygen scavenger to eliminate the dissolved oxygen in wastewater and in pipes.

Usage Statement

Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.

Specifications
SKU 02191438-CF
Alternate Names Disodium Pyrosulfite; Sodium disulfite; Sodium Pyrosulfite
Application Notes Sodium metabisulfite is used as an active ingredient in campden tablets, as a cleaning agent for potable water reverse osmosis membranes, as a preservative and an antioxidant in food. It also acts as a corrosion inhibitor in oil and gas industry, as a bleaching agent in the production of coconut cream, as the source of sulfur dioxide and in the destruction of cyanide in commercial gold cyanidation processes. It is utilized in the precipitation of gold from auric acid as well as in the waste water treatment to remove hexavaent chromium as trivalent chromium by precipitation after reduction. Further, it is used in photography. In addition, it plays as an oxygen scavenger to eliminate the dissolved oxygen in wastewater and in pipes.
Base Catalog Number 191438
Boiling Point Decomposes (NIOSH, 2016)
CAS # 7681-57-4
Density 1.4 (NIOSH, 2016)
EC Number 231-673-0
Format Crystalline powder
Grade ACS grade
Hazard Statements H302-H318; Contact with acids liberates toxic gas.
Insoluble Matter ≤0.005%
Melting Point greater than 302° F (Decomposes) (NIOSH, 2016)
Molecular Formula Na2S2O5
Molecular Weight 190.095 g/mol
Personal Protective Equipment Dust mask , Eyeshields, Gloves
pH 4,0-5,5 (10 % aqueous solution)
Purity ≥97.0%
RTECS Number UX8225000
Safety Symbol GHS05, GHS07
Solubility 54 % (NIOSH, 2016)
Usage Statement Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.