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Topic: TMSBr and how is it sell/prepared?  (Read 4025 times)

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Offline Kaladiscope

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TMSBr and how is it sell/prepared?
« on: October 09, 2012, 08:41:49 PM »
Hi,

I wonder how TMSBr is prepared. Do u know if it contain any stabilizer or anything or if it just TMSBr...

I did not find any info in sigma or acros...

Thanks..
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Offline discodermolide

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Re: TMSBr and how is it sell/prepared?
« Reply #1 on: October 09, 2012, 11:28:32 PM »
You can make TMSBr by exchange of the Cl in TMSCl with cyanogen bromide, NaBr may also work.
As sold it does not contain any stabilisers.
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Offline OC pro

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Re: TMSBr and how is it sell/prepared?
« Reply #2 on: October 10, 2012, 02:38:35 AM »
You should read more carefully. http://www.sigmaaldrich.com/catalog/product/aldrich/194409?lang=de&region=DE
Contains copper or silver wool as stabilizer.
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Offline discodermolide

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Re: TMSBr and how is it sell/prepared?
« Reply #3 on: October 10, 2012, 02:48:58 AM »
That must be new, because when I used it last there was no copper or silver wool. In TMSI and D3 chloroform, but I've never seen it in TMSBr.
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Offline curiouscat

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Re: TMSBr and how is it sell/prepared?
« Reply #4 on: October 10, 2012, 08:10:26 AM »
Quote from: discodermolide on October 10, 2012, 02:48:58 AM
That must be new, because when I used it last there was no copper or silver wool.

Could also vary from supplier to supplier.
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Offline Kaladiscope

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Re: TMSBr and how is it sell/prepared?
« Reply #5 on: October 10, 2012, 08:14:01 AM »
But when they said that the purity is 98 %, means that 2 % is stabilizer or water? or any decomposition product? I don't think that is water because then it will decompose to HBr..
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Offline curiouscat

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Re: TMSBr and how is it sell/prepared?
« Reply #6 on: October 10, 2012, 08:17:02 AM »
Quote from: Kaladiscope on October 10, 2012, 08:14:01 AM
But when they said that the purity is 98 %, means that 2 % is stabilizer or water? or any decomposition product?

"Stuff Production made but couldn't remove"  :)
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Offline fledarmus

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Re: TMSBr and how is it sell/prepared?
« Reply #7 on: October 10, 2012, 08:39:50 AM »
Or it may just represent the limits of detection in whatever means they use to analyze the sample.

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