p-Toluenesulfonic acid → Calcium p-toluenesulphonate

HRID 1993133Notes

Reaction equation

HRID 1993133 reaction equation
[C:1]1([CH3:11])[CH:6]=[CH:5][C:4]([S:7]([OH:10])(=[O:9])=[O:8])=[CH:3][CH:2]=1.[OH-].[Ca+2:13].[OH-]>>[C:1]1([CH3:11])[CH:2]=[CH:3][C:4]([S:7]([O-:10])(=[O:8])=[O:9])=[CH:5][CH:6]=1.[Ca+2:13].[C:1]1([CH3:11])[CH:2]=[CH:3][C:4]([S:7]([O-:10])(=[O:8])=[O:9])=[CH:5][CH:6]=1

Participants

3

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 6093208Calcium Hydroxide

Product 1

HCID 9821332Calcium p-toluenesulphonate

Procedure

To 1000 g of 5% paratoluene sulfonic acid aqueous solution stirred at room temperature, 30 g of calcium hydroxide was added. The stirring was continued while measuring the pH value. At the time when the pH value reached 6, approximately, filtration was done by using a 0.4 μm glass filter to remove the insoluble components, so as to obtain a calcium paratoluenesulfonate aqueous solution.

Workup

  1. filtrationapproximately, filtration
  2. filtrationfilter
  3. customto remove the insoluble components

Sources & evidence

ORD record
ord-dd2624c3c8cf4fca8cf701dc3d2c66bf
Source dataset
uspto-grants-2010_01
Patent number
US07651639B2

Reaction notes

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