Fractional crystallization (chemistry) 5782826 195123355 2008-03-01T15:06:06Z 189.6.158.32 In chemistry, '''fractional crystallization''' is a method of [[refining]] substances based on differences in [[soluble|solubility]]. If two or more substances are dissolved in a [[solvent]], they will [[crystallize]] out of solution ([[precipitate]]) at different rates. Crystallization can be induced by changes in concentration, temperature or other means. This technique is often used in [[chemical engineering]] to obtain very pure substances, or to recover sellable products from waste solutions. Fractional crystallization can be used for purification or analysis. ==See also== <!-- alphabetic order --> * [[Crystal]] * [[Crystal structure]] * [[Crystallite]] * [[Crystallization]] and [[Crystallization (engineering aspects)|engineering aspects]] * [[Recrystallization]] * [[Seed crystal]] * [[Single crystal]] ==References== * [http://acaschool.iit.edu/lectures04/JLiangXtal.pdf "Small Molecule Crystalization"] ([[PDF]]) at [[Illinois Institute of Technology]] website [[Category:Chemical engineering]] [[Category:Phase changes]] {{physical-chemistry-stub}} [[pt:Cristalização fracionada (química)]]