Sulfur Dioxide → Sodium Pyrosulfite

HRID 1447550Notes

Reaction equation

HRID 1447550 reaction equation
[S:1]([O-:4])([O-:3])=[O:2].[Na+:5].[Na+].[S:7](=[O:9])=[O:8]>CO>[S:1]([S:7]([O-:9])=[O:8])([O-:4])(=[O:3])=[O:2].[Na+:5].[Na+:5]

Participants

4

Reactant 2

HCID 1119Sulfur DioxideHCID 24437Sodium Sulfite

Product 1

HCID 656671Sodium Pyrosulfite

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent2×

Procedure

To 16.6 g. (132 mm.) of sodium sulfite was added 100 ml. of methanol, and then a solution of sulfur dioxide (8.3 g., 130 mm.) in methanol with stirring at room temperature. After stirring for one hour, the reaction mixture was allowed to stand still and after 24 hours, the supernatant portion was removed and thereby, a methanol suspension containing 0.89 moles/l. of sodium pyrosulfite was obtained.

Workup

  1. waitto stand still and after 24 hours
  2. customthe supernatant portion was removed
  3. additiona methanol suspension containing 0.89 moles/l

Sources & evidence

ORD record
ord-16a681070af44e248ed9ff2c9a276af2
Source dataset
uspto-grants-1979_12
Patent number
US04177247

Reaction notes

Loading…