| Quote: | Originally posted by Nerro
Just as a word of warning I've read about Ir salts that they should be considered extremely toxic Woelen. Your site doesn't mention it do I thought it
might be usefull info. |
I've been looking on the Internet about toxicity of iridium compounds, but I didn't find anything unusual. Just the standard stuff. Have a look at
these:
http://www.jmcatalysts.com/pct/pdfs/msds/333.pdf
http://physchem.ox.ac.uk/MSDS/IR/iridium_trichloride.html
Finally, see the MSDS (click on Iridium (IV) chloride) over here for IrCl4, the stuff I have:
http://www.alfa.com/ALF/Product%20Indexes/Alfa_Complete/I3_i...
Could you provide me a link to the place where extreme toxicity is mentioned? If this indeed is the case, then I'll definitely add that info to my
webpage. Special risks must indeed be mentioned, and I take your warning very seriously.
| Quote: | | Could you explain a little more about the chemistry of Ir perhaps? Is it chemically comparable to any other element? |
Iridium has an insanely complicated chemistry. If you look at the webpage I have, then you already see that there are no real explanations, certainly
if you compare this experiment with others.
The chemistry of iridium only is investigated at low detail. This of course is due to the high price of the metal and its rare occurrence. A lot of
things still are to be discovered. Even the compound "IrCl4", which I have has a very doubtful composition. I do not precisely know what it really is.
What is known, however, is that in aqueous solution, iridium exists in oxidation states +3 and +4, but not as simple aqua ions. It forms complexes
with almost everything and these complexes are very colorful.
[Edited on 16-7-06 by woelen]
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