Sodium metabisulfite, SO{2} 58.5% min

Description

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

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.

Specifications

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

• Melting Point: >300°C
• Color: White to Yellow
• pH: 3.5 to 5.0
• Physical Form: Granules
• Quantity: 500 g
• Merck Index: 14,8638
• Solubility Information: Freely soluble in water, glycerol; Slightly soluble in alcohol
• Formula Weight: 190.1
• Concentration or Composition (by Analyte or Components): SO₂ 58.5% min.
• Odor: Like rotten eggs
• Sensitivity: Air and moisture sensitive
• Density: 1.480 g/mL
• Chemical Name or Material: Sodium metabisulfite

Safety and Handling

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