TLC Plates, ALUGRAM RP-18W/UV254, 5x20cm
RP-18 W/UV254 octadecyl-modiied HPTLC silica layers Technical characteristics
Nano silica 60, mean pore size 60Å, specific surface (BET) ~ 500 m2/g, specific pore volume 0.75 mL/g, particle size 2–10μm, for preparative plates (1mm thickness of layer) standard silica 60, pH stability 2–10, particle size 5–17μm Indicator: acid-resistant product with a pale blue fluorescence for short-wave UV (254 nm), UV-absorbing substances appear as dark-blue to black spots on a light-blue background Modiication
Partial octadecyl (C18) modification, wettable with water, carbon content 14% Order of polarity: silica > DIOL > NH2 > CN > RP-2 > C18-50 > RP-18 W > C18-100 Recommended application
NP or RP separation with eluents from anhydrous solvents to mixtures with high concentrations of water, relative polarity of the eluent determines the polarity of the layer Aminophenols, barbiturates, preservatives, nucleobases, polycyclic aromatic hydrocarbons, steroids, tetracyclines, plasticizers (phthalates)
