Purification Techniques

Recrystallisation

  • Purification of solid, crude organic products

  • Hot solvent

  • Crash cooling

  • Filtered, washed, and dried

Thin Layer Chromatography(TLC)

  • Separation of small amounts of organic compounds

  • Checking purity of samples

  • Suitable solvent required

  • silica plate is the chromatography medium

Melting Point Determination

  • Gives evidence of identity and purity

  • Desired compound should melt with \(\pm\)0.5\(^\circ\)C