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Sigma-Aldrich/TLC Silica gel 60 RP-2 F₂₅₄ (silanized) 25 Glass plates 20 x 20 cm/1057470001/1057470001
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产品说明
.safetyRow {
clear: both;
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.safetyLeft {
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Related Categories
Analytical/Chromatography,
LPLC/TLC/Paper Chromatography,
TLC and HPTLC Plates,
Thin Layer Chromatography (TLC)
packaging
25 units in Fibre case (1057470001)
shipped in
ambient
storage temp.
Storage temperature: no restrictions.
specifications
Specific surface area (according to BET; 5-Pt. measurement): 480 - 540 m²/g
Pore volume (N₂-isotherm): 0.74 - 0.84 ml/g
d 50 (laser diffraction, size distribution): 13 - 14 µm
Layer thickness: 190 - 250 µm
Deviation of layer thickness per plate: ≤ 40 µm
Chromatographic testings: A) Cholesterin test
hRf-values - cholesterin, cholesterin test: 80 - 90
B) Steroid test
- methyltestosterone, steroid test: 35 - 44
- Reichstein S, steroid test: 46 - 54
- hydrocortisone, steroid test: 53 - 61
Typical value determined on an activated plate (120°C, 15 min) Eluent a) aceton/ water (95/5 v/v) Eluent b) aceton/ water (60/40 v/v)
Description:
Other Notes
RP modified plates serve two purposes: act as a pilot method for HPLC and allow to choose various solvent system for special separations. Our RP-modified silica layers are well suited for many separation challenges that unmodified silica cannot overcome. These layers use aqueous solvent systems to separate extremely non-polar substances and analyze particular polar substances that can adapt to ion-pair chromatography. What’s more, RP-modified silica layers are less dependent on atmospheric humidity. Unlike unmodified silica, RP-phases do not exhibit catalytic activity. This makes them the plates of choice for unstable substance that tend to experience oxidative degradation.
Safety:
HS Code
3822 00 00
Storage class
10 - 13 Other liquids and solids
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