
Ethylhexylglycerin synthesis
- Product Name:Ethylhexylglycerin
- CAS Number:70445-33-9
- Molecular formula:C11H24O3
- Molecular Weight:204.31
Yield:70445-33-9 92.4%
Reaction Conditions:
with sodium hydroxide at 90; for 0.666667 h;Temperature;Reagent/catalyst;
Steps:
1-4 Example 4
Stir the sodium hydroxide and isooctanol in the pre-mixing tank 1 according to 1.5:1 (molar ratio), and then enter the first oil bath raw material storage tank 4 to preheat to 90°C, and add 3-chloro-1,2- Propylene glycol is preheated to 90°C in the second oil bath raw material storage tank 8.The above-mentioned two preheated raw materials were pumped into the micromixer 12 according to the flow volume ratio of 1:1.3, mixed, and then entered into the microchannel reactor 13 for reaction. The diameter of the microchannel reactor 13 was 2.0mm, and the reaction temperature was 90. , The reaction time is 40 minutes, and the crude ethylhexyl glycerol is obtained. The content of ethylhexyl glycerol in online GC analysis is 94.6%.Adjust the PH value of the crude product to 7 with hydrochloric acid solution, lower it to room temperature, separate the product from oil and water with a separatory funnel, drain the water phase, wash the organic phase twice with water, separate the organic phase, and pass the molecular distillation equipment in a vacuum The temperature is 40-50Pa, and 138±3°C fractions are collected to obtain ethylhexylglycerol as a colorless and transparent liquid. According to gas chromatography analysis, the purity of ethylhexylglycerol is 99.7%, and the yield is 92.4%.
References:
CN112661614,2021,A Location in patent:Paragraph 0026-0033

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