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

A17351 Sodium metabisulfite, 97%

CAS-Nummer
7681-57-4
Synonyme
Sodium pyrosulfite
Sodium sulfite

Größe Preis ($) Menge Verfügbarkeit
500g 22,45
2500g 43,67
10000g 134,93
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Sodium metabisulfite, 97%

MDL
MFCD00167602
EINECS
231-673-0

Chemische Eigenschaften

Formel
Na2O5S2
Molmasse
190.10
Schmelzpunkt
>300°
Dichte
1.480
Sensitivität
Air & Moisture Sensitive
Löslichkeit
Soluble in water, ethanol and glycerol.

Anwendungen

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.

Bemerkungen

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

Literaturverweise

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.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H318-H302

Causes serious eye damage. Harmful if swallowed.

Sicherheitshinweise: P280-P264-P270-P305+P351+P338-P310-P301+P312-P330-P501a

Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. Do not eat, drink or smoke when using this product. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Merck
14,8638
Harmonized Tariff Code
2832.10
TSCA
Yes
RTECS
UX8225000

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