1,3-Propanedisulfonic acid → 1,3-Propanedisulphonic acid strontium salt

HRID 1672708

Reaction equation

HRID 1672708 reaction equation
[CH2:1]([S:8]([OH:11])(=[O:10])=[O:9])[CH2:2][CH2:3][S:4]([OH:7])(=[O:6])=[O:5].O.O.O.O.O.O.O.O.[OH-].[Sr+2:21].[OH-]>O>[Sr+2:21].[CH2:3]([S:4]([O-:7])(=[O:6])=[O:5])[CH2:2][CH2:1][S:8]([O-:11])(=[O:10])=[O:9]

Participants

4

Reactant 2

HCID 4285731,3-Propanedisulfonic acidHCID 21617461Strontium hydroxide octahydrate

Product 1

HCID 167527601,3-Propanedisulphonic acid strontium saltYield 63%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Conditions

Temperature
4 °C

Procedure

A mixture of 222 g of 70% 1,3-propanedisulphonic acid in water (0.76 mol) and 200.4 g of strontium hydroxide octahydrate (0.75 mol) in 200 ml of water is heated at reflux for 3 hours. The reaction mixture is filtered hot and then cooled to 4° C. The precipitate formed is removed by filtration and 500 ml of 96% ethanol are added to the filtrate. The precipitate is filtered off, rinsed with 250 ml of a 70/30 ethanol/water mixture and dried to obtain 139 g of a white crystalline product of 1,3-propanedisulphonic acid strontium salt (yield 63%).

Workup

  1. temperatureis heated
  2. temperatureat reflux for 3 hours
  3. filtrationThe reaction mixture is filtered hot
  4. customThe precipitate formed
  5. customis removed by filtration and 500 ml of 96% ethanol
  6. additionare added to the filtrate
  7. filtrationThe precipitate is filtered off
  8. washrinsed with 250 ml of a 70/30 ethanol/water mixture
  9. customdried

Sources & evidence

ORD record
ord-1229270a02014d128dc720953143f449
Source dataset
uspto-grants-2011_08
Patent number
US07999009B2

Linked notes

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