0919 Lab Report 3 Steam Distillation and 4 Crystallization
Reuven Ilyayev
Lab Instructor: Maciej Domaradzki
Labs 3 & 4
09/19/11
Objective: In steam distillation lab (lab 3), we must obtain pure Eugenol from cloves through the process of steam distillation. In the crystallization lab (lab 4) part 1, we must acquire the best possible pure crystallization of acetylsalicylic acid from aspirin and in part 2 we must obtain a similar pure crystallization of benzil from an impure mixture of benzil.
Materials: In lab 3, we used 75 g of cloves from which we must extract Eugenol. Water was largely used as a solvent. A polar solvent used was Dichloromethane. The drying agent used was Calcium Chloride. An acid and a base used were hydrochloric acid and Sodium Hydroxide, respectfully. The equipment used were a thermometer & holder, separatory funnel, classen adapter, 3-way adapter (distillation adapter), triple neck round bottom flask, west condenser, vacuum adapter, Erlenmeyer flask, 500ml & 50 ml beaker, Bunsen burner, rubber tubing, clamp holder & extensions, and graduated cylinder.
For both parts of lab 4, the heating source was the hot plate, the substances were heated in a 100ml Erlenmeyer flask, filtered using filter paper and a funnel with a neck, beakers, vacuum flask for additional filtration, and an electronic scale for weighing the crystals. The solvent used for both parts was 95% Ethanol that was also dripped on the crystals for purification. Ten tablets of aspirin were used in part one. Two grams of impure benzil were used in part two.
Procedure: Lab 3 involved an intricate lab with many steps. We began by obtaining 75 grams of cloves and stuffing them into our triple neck round bottom flask. Then we poured 200 ml of water into the flask, put a stopper into 2 of the 3 necks except the middle one, and inserted a Classen adapter into that center neck. Into the Classen adapter went a separatory funnel in one neck and a 3-way adapter in the other neck. The Separatory funnel was filled with 50
Lab Instructor: Maciej Domaradzki
Labs 3 & 4
09/19/11
Objective: In steam distillation lab (lab 3), we must obtain pure Eugenol from cloves through the process of steam distillation. In the crystallization lab (lab 4) part 1, we must acquire the best possible pure crystallization of acetylsalicylic acid from aspirin and in part 2 we must obtain a similar pure crystallization of benzil from an impure mixture of benzil.
Materials: In lab 3, we used 75 g of cloves from which we must extract Eugenol. Water was largely used as a solvent. A polar solvent used was Dichloromethane. The drying agent used was Calcium Chloride. An acid and a base used were hydrochloric acid and Sodium Hydroxide, respectfully. The equipment used were a thermometer & holder, separatory funnel, classen adapter, 3-way adapter (distillation adapter), triple neck round bottom flask, west condenser, vacuum adapter, Erlenmeyer flask, 500ml & 50 ml beaker, Bunsen burner, rubber tubing, clamp holder & extensions, and graduated cylinder.
For both parts of lab 4, the heating source was the hot plate, the substances were heated in a 100ml Erlenmeyer flask, filtered using filter paper and a funnel with a neck, beakers, vacuum flask for additional filtration, and an electronic scale for weighing the crystals. The solvent used for both parts was 95% Ethanol that was also dripped on the crystals for purification. Ten tablets of aspirin were used in part one. Two grams of impure benzil were used in part two.
Procedure: Lab 3 involved an intricate lab with many steps. We began by obtaining 75 grams of cloves and stuffing them into our triple neck round bottom flask. Then we poured 200 ml of water into the flask, put a stopper into 2 of the 3 necks except the middle one, and inserted a Classen adapter into that center neck. Into the Classen adapter went a separatory funnel in one neck and a 3-way adapter in the other neck. The Separatory funnel was filled with 50