天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Sodium ethylenesulphonate
3039-83-6

Sodium ethylenesulphonate synthesis

5synthesis methods
-

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

FullText

Sodium ethylenesulphonate Related Search: