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7681-57-4 - Sodium metabisulfite, 97% - Sodium pyrosulfite - Sodium sulfite - A17351 - Alfa Aesar

A17351 Sodium metabisulfite, 97%

Número CAS
7681-57-4
Nombre Alternativo
Sodium pyrosulfite
Sodium sulfite

Tamaño Precio ($) Cantidad Disponibilidad
500g 22,60
2500g 43,90
10000g 136,00
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Sodium metabisulfite, 97%

MDL
MFCD00167602
EINECS
231-673-0

Propiedades químicas

Fórmula
Na2O5S2
Peso molecular
190.10
Punto de fusión
>300°
Densidad
1.480
Sensibilidad
Air & Moisture Sensitive
Solubilidad
Soluble in water, ethanol and glycerol.

Aplicaciones

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.

Notas

Moisture and air sensitive. Incompatible with strong oxidizing agents and strong acids.

Referencias documentales

Tan, T. C.; Cheng, L. H.; Bhat, R.; Rusul, G.; Easa, A. M. Effectiveness of ascorbic acid and sodium metabisulfite as anti-browning agent and antioxidant on green coconut water (Cocos nucifera) subjected to elevated thermal processing. Int. Food Res. J. 2015, 22 (2), 631-637

Zaid, B.; Maddache, N.; Saidi, D.; Souami, N.; Bacha, N.; Ahmed, A. S. Electrochemical evaluation of sodium metabisulfite as environmentally friendly inhibitor for corrosion of aluminum alloy 6061 in a chloride solution. J. Alloys Compd. 2015, 629, 188-196.

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H302-H318

Harmful if swallowed. Causes serious eye damage.

Indicaciones de precaución: P280i-P264-P305+P351+P338-P310a-P301+P312a-P501a

Wear eye/face protection. Wash thoroughly after handling. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Merck
14,8638
Código de tarifa arancelaria unificado
2832.10
TSCA
Yes
RTECS
UX8225000

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