woelen
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Reactions of chlorosulfonic acid
I have been experimenting with chlorosulfonic acid lately. I tested its reactions with many oxoacid metal salts (some of them are permanganate,
nitrite, dichromate, nitrate). This stuff reacts in an amazing way with most oxoacid salts, but visually, the reactions with permanganate and
dichromate are the most beautiful and I absolutely want to share these:
https://woelen.homescience.net/science/chem/exps/HSO3Cl/inde...
The general pattern behind the reactions is that the acid is capable of replacing an -O-M group (where M is the metal, e.g. K or Na) by Cl. E.g. With
sodum nitrite you get replacement as follows:
O=N-O-Na + HOSO2Cl ---> O=N-Cl + HOSO2ONa (nitrosyl chloride and sodium bisulfate)
With the permanganate ion and dichromate ion, this leads to particularly interesting and visually stunning products.
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Bedlasky
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This is really interesting experiment! Where did you get this chemical in current EU chemophobia?
Chlorosulfonic acid is great compound to preparation of polychalcogen a polyhalogen cations from elements. There is something about it.
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woelen
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Chlorosulonic acid can be purchased in NL (e.g. at Hinmeijer, Dulova), but also in Germany (S3 chemicals). Although it is very corrosive, it is not
particularly toxic and it also is not suitable as a precursor for making explosives. Chemicals become regulated if they introduce a severe risk for
being abused by terrorists or if they are a big risk for the environment, but not if they are corrosive or very reactive. Hence, some remarkably
reactive chemicals like chlorosulfonic acid remain available.
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Dr.Bob
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I have used it to use for making aryl sulfonyl chlorides. Still remember the time someone tried to use a plastic syringe with it, and the plastic
dissolved. Fortunately they were wearing gloves. It is pretty harsh stuff to work with, but highly useful. Never even thought about mixing it
with inorganics, I guess I have organic tunnel vision. Interesting reactions, however. Good luck.
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