Procedure:
1- Weigh 10 g of cigarettes leaves in beaker.
2- Add 100ml NaOH solution and stir very well for 15 min.
3- Filter in Buchner using glass wool and press the cigarettes very well by using other beaker.
4- Transfer the cigarettes again to beaker.
5- Add 30ml DW and stir and filter again.
6- Collect the filtrate together. (If there is any impurities re-filter).
7- Transfer the filtrate to the SF and extract by 25ml ether.
8- Repeat the extraction 3times.
9- Gather the 4 filtrates in conical flask.
10- Dry by using 1teaspoon anhydrous potassium carbonate.
11- Filter.
12- Evaporate ether on water bath. (Avoid extra heat because nicotine is hydrolyzed by extreme heating).
13- After evaporation of ether add 4ml methanol to dissolve the resulted oil.
14- Add 10ml saturated picric acid solution.
15- Cool in an ice bath to precipitate the nicotine di picrate crystals.
16- Filter; allow drying and weighing the product.
Materials:
1- Cigarettes, cigar, and muassil.
2- Ether.
3- NaOH solution (5%)
4- Saturated picric acid solution in methanol.
5- Beaker 250ml
6- Separating funnel.
Organized by Lecturers: Sharifa A. Al-Ghamdi& Maha Baljoon 2