Add time:08/23/2019         Source:sciencedirect.com

Publisher SummaryThe most common method used for purification of inorganic species is recrystallization. However, especially with salts of weak acids or of cations other than the alkaline and alkaline earth metals, care must be taken to minimize the effect of hydrolysis. This can be achieved, for example, by recrystallizing acetates in the presence of dilute acetic acid. It is convenient that many inorganic substances have large temperature coefficients for their solubility in water, but in other cases recrystallization is still possible by partial solvent evaporation. On the other hand, organo-metallic compounds behave very much like organic compounds, e.g., they can be re-distilled and may be soluble in organic solvents. A note of caution should be made about handling organo-metallic compounds––such as, arsines––because of their potential toxicities, particularly when they are volatile.

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