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RP-18 W/UV254
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Developing time [min] for a migration distance of 7 cm for
a) RP-18 W compared to
b) Nano-SIL C 18-50 and
c) Nano-SIL C 18-100
all plates with UV indicator
 methanol/water
 acetonitrile/water
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octadecyl-modified nano silica layers for HPTLC
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Features
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base material:
silica 60, specific surface (BET) ~ 500 m2/g, mean pore size 60 Å, specific pore volume 0.75 ml/g, mean particle size 9 μm, pH stability 2 – 10
indicator:
acid-resistant product with a pale blue fluorescence for short-wave UV
(254 nm); UV-absorbing substances apppear as dark-blue to black spots on a light-blue background
partial octadecyl modification, wettable with water, carbon content 14%
order of polarity:
silica > DIOL > NH2 > CN > RP-2 > C 18-50 > RP-18 W > C 18-100
normal phase or reversed phase separation modes with eluents from anhydrous solvents to mixtures with high concentrations of water (see figure); the relative polarity of the eluent determines the polarity of the layer
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recommended application: aminophenols, barbiturates, preservatives, nucleobases, polycyclic aromatic hydrocarbons, steroids, tetracyclines, plasticizers (phthalates) |
Ordering information |
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Designation
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Thickness of layer |
Plate size
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Fluorescent indicator
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Plates per pack
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REF
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Glass plates
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| RP-18 W/UV254 |
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0.25 mm |
5 x 20 cm
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UV254 |
50
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811073
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| RP-18 W/UV254 |
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0.25 mm |
10 x 10 cm
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UV254 |
25
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811075
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| RP-18 W/UV254 |
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0.25 mm |
10 x 20 cm
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UV254 |
50
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811072
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| RP-18 W/UV254 |
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0.25 mm |
20 x 20 cm
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UV254 |
25
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811071
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| RP-18 W/UV254 |
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1.00 mm |
20 x 20 cm
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UV254 |
15
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811074
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ALUGRAM® aluminium sheets
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| RP-18 W/UV254 |
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0.15 mm |
4 x 8 cm
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UV254 |
50
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818144 |
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| RP-18 W/UV254 |
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0.15 mm |
5 x 10 cm
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UV254 |
50
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818152
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| RP-18 W/UV254 |
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0.15 mm |
5 x 20 cm
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UV254 |
50
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818145
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| RP-18 W/UV254 |
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0.15 mm |
10 x 10 cm
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UV254 |
25
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818147
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| RP-18 W/UV254 |
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0.15 mm |
20 x 20 cm
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UV254 |
25
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818146
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