Fractional crystallization (chemistry)
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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)]]