Sodium metabisulfite, ACS – CAS 7681-57-4
Price f.o.b. for gr.500
€ 120.00
Additional information
| Weight | 500 g |
|---|---|
| product name | Sodium metabisulfite, ACS |
| synonyms | disodium (sulfinatooxy)sulfinate |
| product origin | 100% made in European Union (according to USP, EUP, ECHA-REACH) |
| purity grade | >99.99% (raw virgin matter, ultra-pure, sterilized) |
| use | lab. / tech. / bio-research / synthesis / foodpreservative-antioxidant / industrial |
| product code | EA7351 |
| C.A.S. number | 7681-57-4 |
| MDL | MFCD00167602 |
| EINECS | 231-673-0 |
| ID PubChem | 329751131 |
| formula molecular | Na2O5S2 |
| formula linear | Na2S2O5 |
| formula weight | 190.09 |
| melting point | >300 °C (lit.) |
| pH | 4.5 (20 °C 50 g/L) |
| decomposition temperature | 120 °C |
| density | 1.4 |
| solubility | ethanol and glycerol , water : |
| sensitivity & storage | ambient temperatures |
| assay | >99.99% to <104.0% (iodometric titration) |
| identification (FTIR) | conforms |
| appearance (color) | white |
| form | crystals or powder or crystalline powder |
| applications | 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 waste water treatment to remove hexavaent chromium as trivalent chromium by precipitation after reduction; further, it’s used in photography; in addition, it plays as an oxygen scavenger to eliminate the dissolved oxygen in wastewater and in pipes. |
| note (1) | Moisture and air sensitive; incompatible with strong oxidizing agents and strong acids. |
| note (2) | this product is for research use only, is not to be used for therapeutic ; not intended for animal or human or diagnostic or therapeutic use , and cannot be sold to patients. |
| note (3) | described price of the product is NOT NEGOTIABLE , already around 25% lower than the official price of the International Chemical Stock Exchange / ICIS . * Possible additional discount for large quantity orders . |
| packaging / transport | special for chemical transport (according to IATA / ADR / ECHA-REACH rules / int.l laws) . |
| certifications | C.O.A., MSDS, GMP, API, USP, EUP, ECHA-REACH, ORIGIN, etc… (originals will be delivered with good , and copies after confirmed order) |
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