How to Crystallize Organic Compounds |
| How to Crystallize Organic Compounds Posted: 20 Mar 2010 01:00 PM PDT Insulin crystalsCrystallization (or recystallization) is the most important method for purification of organic compounds. The process of removing impurities by crystallization involves dissolving a compound in an appropriate hot solvent, allowing the solution to cool and become saturated with the compound being purified, allowing it to crystallize out of the solution, isolating it by filtration, washing its surface with cold solvent to remove residual impurities, and drying. Here is a detailed step-by-step guide on how to crystallize organic compounds. This is best done in a controlled chemistry laboratory, in a well-ventilated area. Note that this procedure has wide applications, including large scale commercial purification of sugar by crystallization of the raw sugar product which leaves impurities behind. Yellow solute→ Solvent added (clear) to compound (yellow) → Solvent heated to give saturated compound solution (yellow) → Saturated compound solution (yellow) allowed to cool over time to give crystals (yellow) and a non-saturated solution (pale-yellow). |
| You are subscribed to email updates from How to of the Day To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google Inc., 20 West Kinzie, Chicago IL USA 60610 | |
No comments:
Post a Comment