Sodium ethylenesulphonate synthesis
- Product Name:Sodium ethylenesulphonate
- CAS Number:3039-83-6
- Molecular formula:C2H3O3S.Na
- Molecular Weight:130.1
64-17-5
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3039-83-6
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Yield:-
Reaction Conditions:
with sulfur trioxide;sodium hydroxide at 20 - 60; for 8 h;Large scale;
Steps:
1.1 Example 1
1> Add 828kg (18kmol) of anhydrous ethanol to the 3000L glass-lined reactor and mix and control the temperature <20 °C.The sulfur trioxide gas was passed through the surface of the ethanol to be sulfonated, and a total of 2,909 kg of sulfur trioxide was introduced. After the completion, it was transferred to a high-level tank.Add 3,692 kg of 20% liquid alkali in the tank of 5000L, stir the temperature control below 60 ° C will be 1/3Batch sulfonic acidAdd by drop.After the dropwise addition is completed, the mixture is cooled to 30 ° C, and the sodium sulfate hydrate is separated by centrifugation, and the filtrate is transferred to a freeze crystallization tank (5000 L).Continue stirring and cool down to 0 ° C, stir for more than 8 hours, centrifuge and wash with ice water.Approximately 25% aqueous sodium vinyl sulfonate solution was placed and stored in a storage tank.
References:
Jingchu Institute Of Technology;Hu Liping;Wu Rui;Hu Guanfeng CN109836399, 2019, A Location in patent:Paragraph 0029-0030
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