Sodium metabisulfite, 97%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11493587	Thermo Scientific Alfa Aesar A17351.36	500 g
11403597	Thermo Scientific Alfa Aesar A17351.0E	2500 g
11413597	Thermo Scientific Alfa Aesar A17351.0C	10,000 g

Description

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.

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.

Chemical Identifiers

• CAS: 7681-57-4
• Molecular Weight (g/mol): 190.09
• InChI Key: LDTLADDKFLAYJA-UHFFFAOYSA-L
• PubChem CID: 656671
• SMILES: [Na+].[Na+].[O-]S(=O)OS([O-])=O

• Molecular Formula: Na2O5S2
• MDL Number: MFCD00167602
• Synonym: sodium metabisulfite, sodium pyrosulfite, sodium disulfite, disodium pyrosulfite, sodium metabisulphite, disodium disulfite, disodium disulphite, fertisilo, disodium metabisulfite, natrii disulfis
• IUPAC Name: disodium (sulfinatooxy)sulfinate

Specifications

• Melting Point: >300°C
• pH: 3.5 to 5.0
• Linear Formula: Na₂S₂O₅
• Merck Index: 14,8638
• Solubility Information: Soluble in water,ethanol and glycerol.
• SMILES: [Na+].[Na+].[O-]S(=O)OS([O-])=O
• Molecular Weight (g/mol): 190.09
• Formula Weight: 190.1
• Odor: Like Rotten Eggs
• Density: 1.48

• CAS: 7681-57-4
• Molecular Formula: Na2O5S2
• MDL Number: MFCD00167602
• Synonym: sodium metabisulfite, sodium pyrosulfite, sodium disulfite, disodium pyrosulfite, sodium metabisulphite, disodium disulfite, disodium disulphite, fertisilo, disodium metabisulfite, natrii disulfis
• InChI Key: LDTLADDKFLAYJA-UHFFFAOYSA-L
• IUPAC Name: disodium (sulfinatooxy)sulfinate
• PubChem CID: 656671
• Percent Purity: 97%
• Sensitivity: Air and moisture sensitive
• Chemical Name or Material: Sodium metabisulfite

Safety and Handling

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

P260-P264b-P270-P280-P301+P312-P305+P351+P338-P310-P314-P330-P501c

H302-H318

missing translation for 'einecsNumber' : 231-673-0

missing translation for 'rtecsNumber' : UX8225000

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures; Store under Nitrogen

Product Identifier

• Sodium metabisulfite

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 4
• Serious eye damage/eye irritation Category 1

Hazard Statement

• H302-Harmful if swallowed.
• H318-Causes serious eye damage.
• EUH031-Contact with acids liberates toxic gas.

Precautionary Statement

• P233-Keep container tightly closed.
• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310-Immediately call a POISON CENTER/doctor/.

Supplemental information

• MIXTURE LIST-Contains : sodium metabisulphate

RUO – Research Use Only