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| Id: | 20626
| | Autor: | Cole, Howard Irving; Cardoso, Humberto. | | Título: | Purification and esterification of chaulmoogra oils.
| | Fonte: | Int. J. Lepr;4(4):455-468, Oct.-Dec. 1936. tab, graf, ilus.
| | Resumo: | A method for the purification of chaulmoogra oils is given. It is shown that the time of esterification of chaulmoogra oil is not a reliable criterion for determining the completion of the reaction. Refractive index and optical activity of mixed ethyl esters of Hydnocarpus wightiana oil is given. The factors affecting the rate of esterification are enumerated and discussed. Experiments that show the influence of sulphuric acid on the rate of esterification are recorded. A method for the esterification of chaulmoogra oil in approximately eight hours is described. Apparatus for the esterification of chaulmoogra oil in approximately eight hours is described. Apparatus for the preparation, distillation and purification of the ethyl esters of chaulmoogra oil is described. The method of vacuum distillation of ethyl esters in an iron still is included, with a diagram of the still and directions for its operation. Methods for the preparation of creosoted and iodized esters are given in detail, including precautions to be observed. (AU).
| | Descritores: | HANSENOSTATICOS/hist
CHAULMOOGRA/anal
CHAULMOOGRA/hist
CHAULMOOGRA/isol
| | Localização: | BR191.1 |
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