Author Topic: TLC silica gel IB2-F  (Read 2474 times)

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PolytheneSam

  • Guest
TLC silica gel IB2-F
« on: May 26, 2002, 06:37:00 AM »
Are TLC plates typically given a rating of some kind?  If someone had something like Baker-flex silica gel IB2-F (1B2-F?) what does that refer to?  They're 2.5 x 7.5 cm.

http://www.geocities.com/dritte123/PSPF.html
The hardest thing to explain is the obvious

hest

  • Guest
the f means flurocent (they glow in uv).
« Reply #1 on: May 26, 2002, 07:53:00 AM »
the f means flurocent (they glow in uv). The usual TLC plate made of an .1-.25mm silicagel 60 layer with a flurocent additive.

PolytheneSam

  • Guest
fluorescent
« Reply #2 on: May 26, 2002, 02:58:00 PM »
OK.  Would something that is normally fluorescent show up on these plates in either short wave (hand held mineral light) or long wave (fluorescent black light), ie. something with a benzene ring or indole ring?

http://www.geocities.com/dritte123/PSPF.html
The hardest thing to explain is the obvious

terbium

  • Guest
Will be visible.
« Reply #3 on: May 26, 2002, 03:51:00 PM »
The organics will show up one way or another. Often the aromatic group will absorb the UV giving a dark spot but if the organics fluoresce themselves then it will likely be a different color from the green fluorescence of the TLC plate so they will still show up. Another quick way to visualize the organics on a TLC plate is to expose the plate to iodine vapour, the organic will absorb the iodine vapour causing a visible dark spot.