martes, 25 de noviembre de 2008

SÍNTESIS DEL DDT

Se sintetiza fácilmente a partir de sustancias de bajos costes que se consiguen sin ninguna dificultad. El tricloroacetaldehido, obtenido por tratamientos de acetaldehido con cloro, es la materia prima para la obtención del insecticida DDT. Cuando el tricloroacetaldehido se hace raccionar con el clorobenceno en presencia del ácido sulfúrico, el producto es la sustancia clorada DDT bruto. Una vez que la reacción ha terminado y, obtenemos el DDT bruto, se purifica lavándolo con grandes cantidades de agua, haciendo que el DDT se separe de las impurezas junto con el agua, ya que sabemos que al igual que otros hidrocarburos clorados, el DDT es prácticamente insoluble en agua. Tambien podemos lavar el DDT bruto por neutralización con CO3Na2 después de drenar el ácido agotado.

En la siguiente imagen mostramos la formación del DDT en la que participan distintas reacciones de eliminación y protonación.


90 comentarios:

Ana dijo...

Bueno esto es lo que he podido encontrar de la sintesis del ddt, espero que lo entendais, en la imagen explica todo.
Gracias.

Bárbara dijo...

Perdonad por la tardanza en incluir una nueva entrada en el blog, pero la información que estoy buscando me está costando mucho trabajo. Estoy intentando completar la degradación del ddt buscando en las bases de datos de la Universidad y tengo que traducirlo al español. En cuanto haya terminado os cuelgo todo.

Gracias

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