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Gravity chromatography

The checkers found that gravity chromatography can be replaced by ordinary flash chromatography (30% ethyl ether-hexane eluant, 2.5-cm I.D. column 40 g of flash grade silica gel, 20-nt fractions). In at least one case, the checkers found that pure product could be isolated in high yield (98%) without recrystallization. [Pg.52]

Gravity chromatography is used to separate the components of a mixture which have a difference in R value of at least 0.3. Flash chromatography, because of the smaller size of the adsorbant particles, is more effective separating mixtures components of A7 f = 0.15 and is also faster. [Pg.217]

Fig. 32.15 Column chromatography (a) gravity chromatography (b) flash chromatography. Fig. 32.15 Column chromatography (a) gravity chromatography (b) flash chromatography.
See other pages where Gravity chromatography is mentioned: [Pg.48]    [Pg.615]    [Pg.73]    [Pg.209]    [Pg.144]    [Pg.145]    [Pg.753]    [Pg.51]    [Pg.59]    [Pg.100]    [Pg.95]    [Pg.216]    [Pg.45]    [Pg.237]    [Pg.216]    [Pg.596]    [Pg.216]    [Pg.47]    [Pg.47]    [Pg.48]    [Pg.54]    [Pg.135]    [Pg.140]   
See also in sourсe #XX -- [ Pg.217 , Pg.219 ]

See also in sourсe #XX -- [ Pg.217 , Pg.219 ]



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