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

A17351 Sodium metabisulfite, 97%

Numéro de CAS
7681-57-4
Synonymes
Sodium pyrosulfite
Sodium sulfite

Conditionnement Prix ($) Quantité Disponibilité
500g 22,60
2500g 43,90
10000g 136,00
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Sodium metabisulfite, 97%

MDL
MFCD00167602
EINECS
231-673-0

Propriétés chimiques

Formule
Na2O5S2
Poids moleculaire
190.10
Point de fusion
>300°
Densité
1.480
Sensibilité
Air & Moisture Sensitive
Solubilité
Soluble in water, ethanol and glycerol.

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 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.

Notes

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

Références bibliographiques

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.

Mentions de danger et de prudence du SGH

Mentions de danger (UE): H302-H318

Harmful if swallowed. Causes serious eye damage.

Mentions de prudence: P260-P201-P280i-P304+P340-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Obtain special instructions before use. Wear eye/face protection. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Autres références

Merck
14,8638
Code tarifaire harmonisé
2832.10
TSCA
Yes
RTECS
UX8225000

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Catalyseurs

Analytique et matériel de laboratoire