Short-path distillation is a distillation technique that involves the distillate traveling a short distance, often only a few centimeters, and is normally done at reduced pressure. Short-path distillation systems often have a variety of names depending on the manufacturer of the system and what compounds are being distilled within them. A classic example would be a distillation involving the distillate traveling from one glass bulb to another, without the need for a condenser separating the two chambers. This technique is often used for compounds which are unstable at high temperatures or to purify small amounts of compound. The advantage is that the heating temperature can be considerably lower at reduced pressure than the boiling point of the liquid at standard pressure, and the distilla
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| - Destilación de recorrido corto (es)
- Distillazione a percorso breve (it)
- Short-path distillation (en)
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| - La distillazione a percorso breve è una tecnica di distillazione che consiste nel far percorrere al distillato una breve distanza e si esegue normalmente a bassa pressione (sottovuoto). Questa tecnica è utile quando è necessario distillare quantità di sostanza relativamente piccole, soprattutto per purificare, ad esempio, piccole quantità di fenolo. Si ricorre a questo tipo di distillazione inoltre per poter distillare piccole quantità di una sostanza che ha un'alta temperatura di ebollizione, abbassandola praticando il vuoto, semplicemente collegando il tubo di una pompa a vuoto all'adattatore presente sull'apparato. (it)
- La destilación de recorrido corto es una técnica de destilación que implica que el destilado se desplace una corta distancia, a menudo solo unos pocos centímetros, y normalmente se realiza a presión reducida. Un ejemplo clásico sería una destilación que involucre el destilado que viaja de un bulbo de vidrio a otro, sin la necesidad de un condensador que separe las dos cámaras. Esta técnica se usa a menudo para compuestos que son inestables a altas temperaturas o para purificar pequeñas cantidades de compuesto. Con la destilación de recorrido corto, se obtiene una disminución de la temperatura de ebullición al reducir la presión de operación. Es un proceso continuo con un tiempo de residencia muy corto. La ventaja es que la temperatura de calentamiento puede ser considerablemente más (es)
- Short-path distillation is a distillation technique that involves the distillate traveling a short distance, often only a few centimeters, and is normally done at reduced pressure. Short-path distillation systems often have a variety of names depending on the manufacturer of the system and what compounds are being distilled within them. A classic example would be a distillation involving the distillate traveling from one glass bulb to another, without the need for a condenser separating the two chambers. This technique is often used for compounds which are unstable at high temperatures or to purify small amounts of compound. The advantage is that the heating temperature can be considerably lower at reduced pressure than the boiling point of the liquid at standard pressure, and the distilla (en)
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| - La destilación de recorrido corto es una técnica de destilación que implica que el destilado se desplace una corta distancia, a menudo solo unos pocos centímetros, y normalmente se realiza a presión reducida. Un ejemplo clásico sería una destilación que involucre el destilado que viaja de un bulbo de vidrio a otro, sin la necesidad de un condensador que separe las dos cámaras. Esta técnica se usa a menudo para compuestos que son inestables a altas temperaturas o para purificar pequeñas cantidades de compuesto. Con la destilación de recorrido corto, se obtiene una disminución de la temperatura de ebullición al reducir la presión de operación. Es un proceso continuo con un tiempo de residencia muy corto. La ventaja es que la temperatura de calentamiento puede ser considerablemente más baja (a presión reducida) que el punto de ebullición del líquido a presión estándar, y el destilado solo tiene que viajar una corta distancia antes de condensarse. Un recorrido corto asegura que se pierda poco compuesto en los lados del aparato. El Kugelrohr es una especie de aparato de destilación de recorrido corto que a menudo contiene múltiples cámaras para recoger las fracciones del destilado. (es)
- Short-path distillation is a distillation technique that involves the distillate traveling a short distance, often only a few centimeters, and is normally done at reduced pressure. Short-path distillation systems often have a variety of names depending on the manufacturer of the system and what compounds are being distilled within them. A classic example would be a distillation involving the distillate traveling from one glass bulb to another, without the need for a condenser separating the two chambers. This technique is often used for compounds which are unstable at high temperatures or to purify small amounts of compound. The advantage is that the heating temperature can be considerably lower at reduced pressure than the boiling point of the liquid at standard pressure, and the distillate only has to travel a short distance before condensing. A short path ensures that little compound is lost on the sides of the apparatus. The Kugelrohr is a kind of a short path distillation apparatus which can contain multiple chambers to collect distillate fractions. To increase the evaporation rate without increasing temperature there are several modern techniques that increase the surface area of the liquid such as thin film, wiped film or 'wiper' film, and rolled film all of which involve mechanically spreading a film of the liquid over a large surface. (en)
- La distillazione a percorso breve è una tecnica di distillazione che consiste nel far percorrere al distillato una breve distanza e si esegue normalmente a bassa pressione (sottovuoto). Questa tecnica è utile quando è necessario distillare quantità di sostanza relativamente piccole, soprattutto per purificare, ad esempio, piccole quantità di fenolo. Si ricorre a questo tipo di distillazione inoltre per poter distillare piccole quantità di una sostanza che ha un'alta temperatura di ebollizione, abbassandola praticando il vuoto, semplicemente collegando il tubo di una pompa a vuoto all'adattatore presente sull'apparato. (it)
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