Download to read offline
crystallization.pptx
The document summarizes the topic of crystallization. It defines crystallization as a technique used to purify substances by separating solids from a solution through a physical change. It describes three main types of crystallization: evaporative (forming crystals by heating a solution), cooling (forming crystals by lowering the temperature below solubility), and reactive/precipitation (forming crystals from reactants reacting). Finally, it lists some applications of crystallization like purification of drugs, improved handling, stability, and bioavailability of compounds.
More Related Content
Similar to crystallization.pptx
crystallization.pptx
- 1. PRESNTED BY: AMANSINGH PATEL (2nd SEMESTER m.pharm) Guided by : DR. pallavi Tiwari (assistant professor) department : PHARMACEUTICAL CHEMISTRY subject : Advanced organic chemistry – II TOPIC: Crystallization
- 2.
- 3. l Crystallization- .Crystallization is atechnique used for the purification of substances. A separation technique to separate solids from a solution. .It is a physical change.
- 4. Examples of Crystallization- .Some common examples of crystallization are listed below: .The crystallization of water forms ice cubes and snow. .The crystallization of honey when it is placed in a jar and exposed to suitable conditions. .The deposition of gemstone crystals
- 5. Types Of Crystallization Thereare three types of crystallization and these types are based on the methods of formation of crystals. These types are as follows: 1. Evaporative Crystallization: In this type of crystallization, the crystals are formed by heating the solution which contains the solvent and soluble component. This is one of the most commonly used methods and is used to form crystals from inorganic salts, sucrose, etc. 2. Cooling Crystallization: In this type of crystallization, the liquid which is to be crystallized, is cooled to such a temperature which is below the equilibrium solubility is usually when the temperature increases, the solubility of a liquid also increases. So, when it is cooled to a temperature that is below the equilibrium solubility, it forms crystals. 3. Reactive Crystallization Or Precipitation: In this type of crystallization, the crystals are formed from a solute which is formed when its reactants react. This process of crystallization is faster than any other type of crystallization as the reaction process is quick.
- 6.
- 8. Application of Crystallization •Purificationof drug •Ease for handling •Improved physical stability •Improved bioavailability •Manufacturing of pure API by high yield