143A: Section A03 A10627548 April 14, 2015 Lab Report 1 - Recrystallization and Identification of Unknown Introduction The main concept in this experiment is recrystallization. Recrystallization is the process where the solute (a crystalline material) is dissolved in a hot solvent. The heated solution is filtered (generally via vacuum or gravity filtration) and is returned back to its solid crystalline state when the solution cools down. Recrystallization is best for isolating and purifying solids
poured onto about 10g of crushed ice in a beaker. 7.The product was isolated by vacuum filtration. The solid with a tiny amount of ice cold 50% methanol(mixture 1:1 methanol-water). 8.The crude product was recrystallized using methanol as the recrystallization solvent. 9.The yield and melting point were recorded. Results: Weight of filter paper = Weight of filter paper + crystals = Weight of crystals = 2.1594g Melting point of crystals = 79°C Density of methyl benzoate = 1.094g/mL Mass of methyl