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Nano-SIL C 18





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

octadecyl-modified nano silica layers for HPTLC

 
Features
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)
recommended application: alkaloids, amino acids, preservatives, optical brighteners, barbiturates, polycyclic aromatic hydrocarbons (PAH), drugs, peptides, flavonoids, phenols, indole derivatives, steroids

Ordering information



Designation
Degree of silanisation
Thickness of layer Plate size
Fluorescent indicator
Plates per pack
Cat. No.

Glass plates
Nano-SIL C 18-50
50 %
0.20 mm 10 x 10 cm

25
811054

Nano-SIL C 18-50 UV254 50 %
0.20 mm 10 x 10 cm
UV254 25
811064

Nano-SIL C 18-100 100 %
0.20 mm 10 x 10 cm

25
811052
 
Nano-SIL C 18-100 UV254 100 %
0.20 mm 10 x 10 cm
UV254 25
811062  


         


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