Potassium metabisulfite, 95+%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11324958	Thermo Scientific Alfa Aesar 043908.22	100 g
11314958	Thermo Scientific Alfa Aesar 043908.36	500 g
11334958	Thermo Scientific Alfa Aesar 043908.A3	2 kg

Description

It serves as a component of certain photographic developers and its solution is used in photographic fixing, in the textile industry for dyeing and cotton printing. It is utilized to precipitate gold from solution in aqua regia.

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.

Chemical Identifiers

• CAS: 16731-55-8
• Molecular Weight (g/mol): 222.31
• InChI Key: RWPGFSMJFRPDDP-UHFFFAOYSA-L
• PubChem CID: 28019
• SMILES: [K+].[K+].[O-]S(=O)S([O-])(=O)=O

• Molecular Formula: K2O5S2
• MDL Number: MFCD00167605
• Synonym: potassium metabisulfite, potassium disulfite, potassium pyrosulfite, dipotassium disulfite, dipotassium pyrosulfite, dipotassium metabisulfite, dipotassium disulphite, unii-65oe787q7w, ccris 1427, potassium disulfite k2s2o5
• IUPAC Name: dipotassium sulfinatosulfonate

Specifications

• Melting Point: 190°C (decomposition)
• Color: White
• Assay Percent Range: >99%
• MDL Number: MFCD00167605
• Solubility Information: Soluble in water. Insoluble in ethanol.
• SMILES: [K+].[K+].[O-]S(=O)S([O-])(=O)=O
• Molecular Weight (g/mol): 222.31
• Formula Weight: 222.32
• Sensitivity: Air Sensitive

• CAS: 16731-55-8
• Physical Form: Powder
• Molecular Formula: K2O5S2
• Synonym: potassium metabisulfite, potassium disulfite, potassium pyrosulfite, dipotassium disulfite, dipotassium pyrosulfite, dipotassium metabisulfite, dipotassium disulphite, unii-65oe787q7w, ccris 1427, potassium disulfite k2s2o5
• InChI Key: RWPGFSMJFRPDDP-UHFFFAOYSA-L
• IUPAC Name: dipotassium sulfinatosulfonate
• PubChem CID: 28019
• Odor: Pungent
• Chemical Name or Material: Potassium metabisulfite

Safety and Handling

P280-P305+P351+P338-P310

H318

missing translation for 'einecsNumber' : 240-795-3

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures; Store under Nitrogen

Product Identifier

• Potassium metabisulfite

Signal Word

• Danger

Hazard Category

• Serious eye damage/eye irritation Category 1

Hazard Statement

• H318-Causes serious eye damage.
• EUH031-Contact with acids liberates toxic gas.

Precautionary Statement

• 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 : Potassium metabisulfite

RUO – Research Use Only