Dimethyl tin dilaurate synthesis

Yield:2179-99-9 98.4%

Reaction Conditions:

with sodium ethanolate in water at 50 - 70; pH=5.5;Large scale;pH-value;Reagent/catalyst;

Steps:

5 Example 5

lauric acid 423kg,A 500% solution of dimethyl tin dichloride in water with a concentration of 45% was put into the reactor.Heating and stirring the mixture, when the temperature reached 55 °C, began to drop sodium ethoxide solution;Control the temperature of the reaction system between 50 ~ 70 °C, continue to drop lye, when the pH of the mixture reaches 5.5,Stop adding drops of sodium ethoxide solution and let stand phase separation;The organic phase was added with 600kg of purified water to remove water by salting, and then left to stand;The organic matter is distilled under reduced pressure at 60-80°C to remove low-boiling impurities such as water.After filtration, 551.6 kg of dimethyltin dilaurate was obtained. Yield 98.4%,Tin content of 21.36%.

References:

CN106892849,2017,A Location in patent:Paragraph 0018-0021; 0029-0030; 0047-0048; 0061-0062