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

참여 물질

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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%).

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