H3C Ethyl Isobutyrate(Peach) Isoamyl Acetate(Banana) BP112-113°C 3-Dimethylpyrazine Ethyl Heptanoate BP188-189°C) Helpful Hints Make sure all of your joints are lightly greased and sealed well. Otherwise, you ill lose your product into the atmosphere Insulate your distillation head with cotton and foil to speed things up Do not heat your mixture too fast, or your entire sample will end up in your Be aware that the temperature reading on the thermometer may not correlate accurately with the boiling point of the distilling liquid Results: To obtain your CC Rating" in Purification of Liquids by Distillation, you must obtain at least 7.00 g of the low-boiling material that is 92% pure or better as determined using GC analysis. You must also correctly identify the two components of your mixture. Think boiling points and smellCH3 O CH3 O CH3 H3C H3C O CH3 O Ethyl Isobutyrate (Peach) Isoamyl Acetate (Banana) (BP 112–113 °C) (BP 142–143 °C) N CH3 O CH3 N CH3 H3C O 2,3-Dimethylpyrazine Ethyl Heptanoate (BP 156 °C) (BP 188–189 °C) Helpful Hints: • Make sure all of your joints are lightly greased and sealed well. Otherwise, you will lose your product into the atmosphere. • Insulate your distillation head with cotton and foil to speed things up. • Do not heat your mixture too fast, or your entire sample will end up in your collection flask. • Be aware that the temperature reading on the thermometer may not correlate accurately with the boiling point of the distilling liquid. Results: • To obtain your "CC Rating" in Purification of Liquids by Distillation, you must obtain at least 7.00 g of the low-boiling material that is 92% pure or better as determined using GC analysis. You must also correctly identify the two components of your mixture. Think boiling points and smell! 25