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  7. Sodium metabisulfite, ACS, 97% min

Sodium metabisulfite, ACS, 97% min

Catalog No. AA4011536
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2.5 kg
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AA4011536 500 g
AA40115A4 2.5 kg
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Catalog No. AA4011536 Supplier Thermo Scientific Chemicals Supplier No. 04011536
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Description

CAS: 7681-57-4 | Na2O5S2 | 190.09 g/mol

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 7681-57-4
Molecular Formula Na2O5S2
Molecular Weight (g/mol) 190.09
MDL Number MFCD00167602
InChI Key LDTLADDKFLAYJA-UHFFFAOYSA-L
Synonym sodium metabisulfite, sodium pyrosulfite, sodium disulfite, disodium pyrosulfite, sodium metabisulphite, disodium disulfite, disodium disulphite, fertisilo, disodium metabisulfite, natrii disulfis
PubChem CID 656671
IUPAC Name disodium (sulfinatooxy)sulfinate
SMILES [Na+].[Na+].[O-]S(=O)OS([O-])=O

Specifications

Melting Point >300°C
Color White to Yellow
Physical Form Crystalline Powder
Quantity 500 g
Assay Percent Range 97% min.
Solubility Information Soluble in water,ethanol and glycerol.
Formula Weight 190.1
Grade ACS
Odor Pungent
Sensitivity Air and moisture sensitive
Appearance White to pale yellow powder/flake/crystalline/beads
Density 1.48 g/cm3 at 20°C
Chemical Name or Material Sodium metabisulfite, For analysis ACS
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Safety and Handling

Hazard Category H302-H318
Precautionary Statement P260-P264b-P270-P280-P301+P312-P305+P351+P338-P310-P314-P330-P501c
EINECSNumber 231-673-0
RTECSNumber UX8225000
TSCA Yes
Recommended Storage Ambient temperatures; Store under Nitrogen
SDS

RUO – Research Use Only

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