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Nano-SIL C 18
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Developing time [min] for a migration distance of 7 cm for
a) Nano-SIL C 18-50,
b) Nano-SIL C 18-100 compared to
c) RP-18 W
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, particle size 2 – 10 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 (50%) or complete (100%) octadecyl modification, carbon content 7.5 and 14%, respectively
order of polarity:
silica > DIOL > NH2 > CN > RP-2 > C 18-50 > RP-18 W > C 18-100
reversed phase separation mode with eluents from anhydrous solvents to mixtures with high concentrations of water (see figure) |
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recommended application: alkaloids, amino acids, preservatives, optical brighteners, barbiturates, polycyclic aromatic hydrocarbons (PAH), drugs, peptides, flavonoids, phenols, indole derivatives, steroids |
Ordering information |
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Designation
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Degree of silanisation
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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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Cat. No.
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Glass plates
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Nano-SIL C 18-50
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50 %
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0.20 mm |
10 x 10 cm
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–
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25
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811054
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| Nano-SIL C 18-50 UV254 |
50 %
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0.20 mm |
10 x 10 cm
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UV254 |
25
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811064
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| Nano-SIL C 18-100 |
100 %
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0.20 mm |
10 x 10 cm
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–
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25
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811052
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| Nano-SIL C 18-100 UV254 |
100 %
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0.20 mm |
10 x 10 cm
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UV254 |
25
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811062 |
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