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.
| 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. |
![MP COA [191438] lot ID: Q4974](https://www.mpbio.com/static/version1742546773/frontend/Mpbio/default/en_US/images/document.png "MP COA [191438] lot ID: Q4974")
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