Sodium sulfite, anhydrous, 98%

Description

CAS: 7757-83-7 | Na2O3S | 126.037 g/mol

Sodium sulfite is used in the photography industry to protect developing solutions from oxidation, in the pulp and paper industry, in water treatment as an oxygen scavenger agent, as a desulfurizing and dechlorinating agent in the leather industry and as a bleaching agent in textile industry. It is used as a preservative to prevent dried fruit from discoloring. It finds application as a sulfonation and sulfomethylation agent in the chemical industry. It is involved in the production of sodium thiosulfate. Other applications include forth flotation ores, oil recovery and making dyes.

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 sulfite is used in the photography industry to protect developing solutions from oxidation, in the pulp and paper industry, in water treatment as an oxygen scavenger agent, as a desulfurizing and dechlorinating agent in the leather industry and as a bleaching agent in textile industry. It is used as a preservative to prevent dried fruit from discoloring. It finds application as a sulfonation and sulfomethylation agent in the chemical industry. It is involved in the production of sodium thiosulfate. Other applications include forth flotation ores, oil recovery and making dyes.

Solubility
Soluble in water and glycerol. Insoluble in alcohol, liquid chlorine and liquid ammonia.

Notes
Hygroscopic. Moisture and air sensitive. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with acids, strong oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 7757-83-7
• Molecular Formula: Na2O3S
• Molecular Weight (g/mol): 126.037
• MDL Number: MFCD00003503
• InChI Key: GEHJYWRUCIMESM-UHFFFAOYSA-L
• Synonym: sodium sulfite, disodium sulfite, sodium sulphite, sodium sulfite anhydrous, sulfurous acid, disodium salt, sulftech, natrium sulfurosum, sodiumsulfite, natriumsulfid, natriumsulfit
• PubChem CID: 24437
• ChEBI: CHEBI:86477
• IUPAC Name: disodium;sulfite
• SMILES: [O-]S(=O)[O-].[Na+].[Na+]

• Melting Point: >500°C (decomposition)
• Quantity: 500 g
• Merck Index: 14,8682
• Solubility Information: Soluble in water and glycerol. Insoluble in alcohol,liquid chlorine and liquid ammonia.
• Formula Weight: 126.04
• Percent Purity: 98%
• Density: 2.633
• Chemical Name or Material: Sodium sulfite, anhydrous

Safety and Handling

EINECSNumber	231-821-4
RTECSNumber	WE2150000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only