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  2. Recrystallization (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Recrystallization_(chemistry)

    Recrystallization is a method used to purify chemicals by dissolving a mixture of a compound and its impurities, in an appropriate solvent, prior to heating the solution. [1] Following the dissolution of crude product, the mixture will passively cool, yielding a crystallized compound and its impurities as separate entities.

  3. List of purification methods in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_purification...

    Recrystallization: In analytical and synthetic chemistry work, purchased reagents of doubtful purity may be recrystallised, e.g. dissolved in a very pure solvent, and then crystallized, and the crystals recovered, in order to improve and/or verify their purity.

  4. Recrystallization (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Recrystallization_(metallurgy)

    In materials science, recrystallization is a process by which deformed grains are replaced by a new set of defect-free grains that nucleate and grow until the original grains have been entirely consumed. Recrystallization is usually accompanied by a reduction in the strength and hardness of a material and a simultaneous increase in the ...

  5. Craig tube - Wikipedia

    en.wikipedia.org/wiki/Craig_tube

    A Craig tube is an item of apparatus used in small-scale (up to about 100 mg) preparative and analytical chemistry, particularly for recrystallisation.It was invented by Lyman C. Craig and Otto W. Post. [1]

  6. Recrystallization - Wikipedia

    en.wikipedia.org/wiki/Recrystallization

    Recrystallization may refer to: Recrystallization (chemistry) Recrystallization (geology) Recrystallization (metallurgy) This page was last edited on 17 ...

  7. Crystallization - Wikipedia

    en.wikipedia.org/wiki/Crystallization

    The process is then repeated to increase the purity in a technique known as recrystallization. For biological molecules in which the solvent channels continue to be present to retain the three dimensional structure intact, microbatch [2] crystallization under oil and vapor diffusion [3] have been the common methods.

  8. Diastereomeric recrystallization - Wikipedia

    en.wikipedia.org/wiki/Diastereomeric...

    The conversion of the enantiomeric mixture into a diastereomer pair, depending on the nature of the chemicals, can be via covalent bond formation with the enantiopure resolving agent, or by salt formation, the latter being particularly convenient since acid base chemistry is typically quite operationally simple and high yielding.

  9. Trituration - Wikipedia

    en.wikipedia.org/wiki/Trituration

    In organic chemistry, trituration is a process used to purify crude chemical compounds containing soluble impurities. A solvent is chosen in which the desired product is insoluble and the undesired by-products are very soluble or vice versa. For example, when the impurities are soluble and the desired product is not, the crude material is ...