A lot of these contain chemicals that produce hydrogen peroxide when used. These often feature 'oxi' in the name. The actual chemical used is often sodium perborate, which is normally mixed with an activator (tetraacetylethylenediamine) to make it effective at lower wash temperatures. Sodium percarbonate is another popular choice.
Regards,
Sid
-------------------8><
Partially the progenitor of the brand name "Persil" (actually from perborate and silicate), I was once told.
lye soap has been around longer...
thanks, I've slotted that in.
NT
The alkali is neither here nor there, but it seems animal fats were the norm in Roman times. Odd that they didn't try olives.
Too good to waste on washing.
Computing seems so much easier.
Heh, I did a similar thing for central heating oil, using soil scraped from under a leaking CH oil tank as the starter.
I was going to say that at least the subject doesn't die during the test, but then realised that this was not inaccurate.
So how did you extract the excretion products finally? I'd be tempted to remove the water and volatiles by vacuum distillation, then an ether extraction on the condensed volatiles (which shouldn't contain any BBS). Having removed the water, the residue will still have BBS, but without the water, ether extraction should work.
Did you do chromatographic separation of the components afterwards?
Cheers,
Sid
I spent some months many years ago, trying to determine the
I often do that when there's nothing much on the telly.
mark
On Wed, 21 Jan 2009 22:03:35 +0000, The Natural Philosopher wrote (in article ):
The Greeks use olive oil soap a lot - it's available everywhere there. I don't suppose they use the best 'Extra Virgin' though - more likely chemically recovered stuff from already used pressings.
I didn't. Summer vacation finished & I went back to being an undergraduate, handing the carboy full of fermenter output and ether back to one of the "proper" research assistants.
That was the intent, yes.
Thought that went to Lidl? (Or was that Aldi?) :-)
Feeling mischievous are we? :-)
Ahh. I see. I was hoping you'd reposte with a devilishly cunning way of doing it. I would guess at vacuum distillation + condensation of the volatiles. That would leave the BBS behind, and so you'd have an ether extraction of the volatiles ready made. The residue would be water-free, so I'd guess you could then run a standard extraction on it. Chromatographic isolation of the components, followed by photospectometry of each component and confirmation via mass spectrometry. I suspect these days it's all automated.
Cheers,
Sid
Given the last two days, I think I've changed my mind.
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