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Sodium sulfite

SIAL/08981 - analytical standard

Synonym: E221

CAS Number: 7757-83-7
Empirical Formula (Hill Notation): Na2O3S
Molecular Weight: 126.04
EC Number: 231-821-4
MDL Number: MFCD00003503
Linear Formula: Na2SO3
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-08981-1G 1 g
 $72.10
1/EA		 Add To Favorites

 

application(s) cleaning products
cosmetics
food and beverages
personal care
assay ≥98% (RT)
format neat
grade analytical standard
InChI 1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
InChI key GEHJYWRUCIMESM-UHFFFAOYSA-L
Quality Level 100 
shelf life limited shelf life, expiry date on the label
SMILES string [Na+].[Na+].[O-]S([O-])=O
solubility H2O: 1 g/10 mL, clear, colorless
Application:

  • Oxygen scavenging and contaminant removal: Sodium sulfite′s efficacy in removing organic contaminants through oxygen scavenging in various chemical systems was documented, illustrating its critical role in environmental cleanup and wastewater treatment technologies (Zhou et al., 2023 ).

  • Disinfection by-product management: Sodium sulfite is reviewed for its impact and mechanisms as a residual chlorine quencher, highlighting its potential to reduce harmful disinfection by-products in water treatment processes, which is vital for ensuring safe pharmaceutical and biotechnical operations (Li et al., 2023 ).
General description: This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food.

Find all available reference materials for compounds listed in 10/2011 here 
Risk Statements 31
RIDADR NONH for all modes of transport
WGK Germany WGK 1
Flash Point(F) Not applicable
Flash Point(C) Not applicable
Purity ≥98% (RT)
UNSPSC 85151701

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