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Alfa Aesar™ Sodium metabisulfite, 97%

$34.07 - $66.28

Chemical Identifiers

Chemical Name or Material Sodium metabisulfite
CAS 7681-57-4
Molecular Formula Na2O5S2
Linear Formula Na2S2O5
Formula Weight 190.10g/mol
MDL Number MFCD00167602
Merck Index 14,8638
Synonym Sodium pyrosulfite; Sodium sulfite
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA173510E

 
alfa aesar™
A17351-0E
2500g Each for $66.28

AAA1735136

 
alfa aesar™
A17351-36
500g Each for $34.07
Description & Specifications

Specifications

Odor Like Rotten Eggs
Melting Point >300°C
pH 3.5 to 5.0
Quantity 2500g
Chemical Name or Material Sodium metabisulfite
CAS 7681-57-4
Assay 97%
Molecular Formula Na2O5S2
Linear Formula Na2S2O5
Formula Weight 190.10g/mol
MDL Number MFCD00167602
Merck Index 14,8638
Synonym Sodium pyrosulfite; Sodium sulfite
Health Hazard 1 Danger
Health Hazard 2 GHS H Statement
H318-H302
Causes serious eye damage.
Harmful if swallowed.
Health Hazard 3 GHS P Statement
P280-P264-P305+P351+P338-P310-P301+P312-P501a
Wear protective gloves/protective clothing/eye protection/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.
Immediately call a POISON CENTER or doctor/physician.
IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
Dispose of contents/container in accordance with local/regional/national/international regulations.
RTECS Number UX8225000
TSCA TSCA

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.

Solubility
Soluble in water, ethanol and glycerol.

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

Safety and Handling

Danger

GHS P Statement
P280-P264-P305+P351+P338-P310-P301+P312-P501a
Wear protective gloves/protective clothing/eye protection/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.
Immediately call a POISON CENTER or doctor/physician.
IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H318-H302
Causes serious eye damage.
Harmful if swallowed.