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Sodium metabisulfite, 97%, Thermo Scientific Chemicals
Description
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.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
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.
Solubility
Soluble in water, ethanol and glycerol.
Notes
Moisture and air sensitive. Incompatible with strong oxidizing agents and strong acids.
Specifications
| Melting Point | >300°C |
| pH | 3.5 to 5.0 |
| Quantity | 500 g |
| Linear Formula | Na2S2O5 |
| Merck Index | 14,8638 |
| Solubility Information | Soluble in water,ethanol and glycerol. |
| Formula Weight | 190.1 |
| Percent Purity | 97% |
| Odor | Like Rotten Eggs |
| Sensitivity | Air and moisture sensitive |
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Safety and Handling
- Sodium metabisulfite
- Danger
- Acute toxicity Category 4
- Serious eye damage/eye irritation Category 1
- H302-Harmful if swallowed.
- H318-Causes serious eye damage.
- EUH031-Contact with acids liberates toxic gas.
- P233-Keep container tightly closed.
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P310-Immediately call a POISON CENTER/doctor/.
- MIXTURE LIST-Contains : sodium metabisulphate
RUO – Research Use Only