反应详情

3 kg of trihydroxystearic acid are suspended in 10 l of absolute ethanol. Hydrogen chloride gas is slowly introduced at room temperature whilst stirring, until the acid has almost completely dissolved. The alcoholic ester solutionh is freed of a slight residue by filtration; thereafter the ester is precipitated by pouring the alcoholic solution into a 10-fold volume of water. The ester is filtered off and dried. The excess ethanol is recovered from the filtrate by distillation.

1. dissolutionhas almost completely dissolved
2. filtrationThe alcoholic ester solutionh is freed of a slight residue by filtration
3. customthereafter the ester is precipitated
4. additionby pouring the alcoholic solution into a 10-fold volume of water
5. filtrationThe ester is filtered off
6. customdried
7. distillationThe excess ethanol is recovered from the filtrate by distillation