I7) Weigh the collection flask(s)and obtain the weight of your product(s) Steps for a reduced Pressure distillation 1) Collect the glassware- the same as above except this time make sure to include a pig (3-neck) or cow (4-neck) adapter. Another useful piece of glassware that we wont use 5.301 is a Perkin Triangle. This is described in your texts and may be useful later in your chemistry career 2)Perform steps 24 above. 3)Assemble the glassware, making sure to grease all of the joints. Be sparing with the vacuum grease - it's expensive and you don't want it getting into your compound. See Zubrick pages 53-55 for a discussion of joint greasing 4)Perform steps 6-7 above. 5)DO NOT START HEATING: 6)SLOWLY open the distillation apparatus to vacuum. You should see the liquid begin to bubble. Dont worry, this is normal. Excess solvent or low boiling impurities will often boil away under vacuum at room temperature. This is a good example of why you need to keep your trap full of liquid nitrogen, otherwise these compounds will go directly into your pump oil!) 7)Once the bubbling subsides, or slows almost to a stop, then you can start heating the flask 8)Perform steps 9-15 above. 9)Release the vacuum. When you are done collecting, it is not quite time to cool the apparatus. First, you must release the vacuum. Before you do this, however, make sure that all of your collection flasks are secured to the apparatus by clamps, joint clips, your hand, etc. You do not want to release the vacuum then see your product flask shatter on the17) Weigh the collection flask(s) and obtain the weight of your product(s). Steps for a Reduced Pressure Distillation: 1) Collect the glassware - the same as above except this time make sure to include a pig (3-neck) or cow (4-neck) adapter. Another useful piece of glassware that we won't use in 5.301 is a Perkin Triangle. This is described in your texts and may be useful later in your chemistry career. 2) Perform steps 2–4 above. 3) Assemble the glassware, making sure to grease all of the joints. Be sparing with the vacuum grease - it's expensive and you don't want it getting into your compound. See Zubrick pages 53-55 for a discussion of joint greasing. 4) Perform steps 6–7 above. 5) DO NOT START HEATING!!! 6) SLOWLY open the distillation apparatus to vacuum. You should see the liquid begin to bubble. Don’t worry, this is normal. Excess solvent or low boiling impurities will often boil away under vacuum at room temperature. (This is a good example of why you need to keep your trap full of liquid nitrogen, otherwise these compounds will go directly into your pump oil!) 7) Once the bubbling subsides, or slows almost to a stop, then you can start heating the flask. 8) Perform steps 9–15 above. 9) Release the vacuum. When you are done collecting, it is not quite time to cool the apparatus. First, you must release the vacuum. Before you do this, however, make sure that all of your collection flasks are secured to the apparatus by clamps, joint clips, your hand, etc. You do not want to release the vacuum then see your product flask shatter on the 61