File:Continuous-distillation apparatus for the extraction of nicotine from tobacco (Alessandri 1895.49).png
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Summary
[edit]DescriptionContinuous-distillation apparatus for the extraction of nicotine from tobacco (Alessandri 1895.49).png |
Italiano: L'apparecchio è composto da un pallone A posto in un bagnomaria M. Un tubo uscente B viene costantemente raffreddato in un bagno d'acqua R ed entra poi in una allunga G ove si trova il tabacco C; l'altro tubo d è curvato e saldato al fondo dell'allunga, dove un batuffolo di cotone sostiene il tabacco. Nel pallone A si pongono circa 100 mL di etere ammoniacale, che evaporano e condensano nel tubo B gocciolando continuamente su C, estraendo la nicotina. Dopo circa 6 h il sistema viene raffreddato, l'ammoniaca rimossa per evaporazione spontanea all'aria e la nicotina base titolata con acido solforico.
English: The apparatus is made of a round-bottom flask A heated on a water bath M. Pipe B is constantly cooled in a water bath R, then enters a tube G where some tobacco C is placed over a cotton wad. The flask is filled with ammoniacal diethyl ether, which is boiled and condensed in B, drips over the tobacco, and then flows back to A through tube d. After 6 hours, the ammonia is removed by spontaneous evaporation and the nicotine titrated with sulphuric acid. |
Date | |
Source | Alessandri, P. E. Analisi Volumetrica Applicata Ai Prodotti Commerciali e Industriali; Ulrico Hoepli: Milano, 1895. |
Author | valeg96 |
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[edit]Public domainPublic domainfalsefalse |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. | |
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 19:59, 31 August 2020 | 1,895 × 3,658 (76 KB) | Valeg96 (talk | contribs) | Uploaded a work by valeg96 from Alessandri, P. E. Analisi Volumetrica Applicata Ai Prodotti Commerciali e Industriali; Ulrico Hoepli: Milano, 1895. with UploadWizard |
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File change date and time | 19:47, 24 August 2020 |
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