Perfluorobutane-1,4-disulfonic acid potassium salt → 1,4-Butanedisulfonic acid, 1,1,2,2,3,3,4,4-octafluoro-

HRID 1673194Notes

Reaction equation

HRID 1673194 reaction equation
[K+].[K+].[F:3][C:4]([F:22])([S:18]([O-:21])(=[O:20])=[O:19])[C:5]([F:17])([F:16])[C:6]([F:15])([F:14])[C:7]([F:13])([F:12])[S:8]([O-:11])(=[O:10])=[O:9]>O>[F:13][C:7]([F:12])([S:8]([OH:11])(=[O:10])=[O:9])[C:6]([F:15])([F:14])[C:5]([F:16])([F:17])[C:4]([F:3])([F:22])[S:18]([OH:21])(=[O:19])=[O:20]

Participants

3

Reactant 1

HCID 14384439Perfluorobutane-1,4-disulfonic acid potassium salt

Product 1

HCID 138480021,4-Butanedisulfonic acid, 1,1,2,2,3,3,4,4-octafluoro-

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Perfluorobutane-1,4-bis-sulphonate dipotassium salt (15 g, 34.2 mmol) was dissolved in hot water (100 ml). It was added to an ion exchange column of Amberlyst 15 resin, (40×4 cm) which had been previously washed with excess 6N HCl and rinsed with distilled water. The column was then washed slowly with distilled water, and the first 300 ml of aqueous solution collected. The solution was concentrated in vacuum and the residue was dried under reduced pressure at 80° C. to afford perfluorobutane-1,4-bis-sulphonic acid. (11.0 g, 30 mmol, 88%)

Workup

  1. additionIt was added to an ion exchange column of Amberlyst 15 resin, (40×4 cm) which
  2. washhad been previously washed with excess 6N HCl
  3. washrinsed with distilled water
  4. washThe column was then washed slowly with distilled water
  5. customthe first 300 ml of aqueous solution collected
  6. concentrationThe solution was concentrated in vacuum
  7. customthe residue was dried under reduced pressure at 80° C.

Sources & evidence

ORD record
ord-1b063b0f73c04cf2bb9b158205d0edbd
Source dataset
uspto-grants-2011_08
Patent number
US07999139B2

Reaction notes

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