acx01b
Hazard to Self
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isopropylamine + kmno4 then H2SO4
first dissolved 0.05g Kmno4 in 10ml water (purple color), then added 0.5ml (excess) isopropylamine, color became blue-green (nearly same color as
kmno4 + Naoh, but more blue, less green) then solution became quite clear.... and finally added 8ml 35% H2SO4 (excess) and solution became 100%
orange....
but no Mn compounds precipitated...
so what happened ? is it Mn2+ compound that give orange color ? ty for help
can isopropylamine be oxided by kmno4 ???
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chemoleo
Biochemicus Energeticus
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Were you trying to make 2-nitropropane?
In that case, I'd also check the nitroalkane, and nitroethanol threads, there's some info on KMnO4 oxidation. I don't think it's a
well-studied method.
Anyway.... I should think the orange colour is a result of polymerisation products of isopropylamine, and oxidised/condensed variations, similar to
acetone acquiring a dark colour in the presence of H2SO4.
No, Mn2+ is weakly pink, not orange.
Your excess vs KMnO4 are quite big, why?
Never Stop to Begin, and Never Begin to Stop...
Tolerance is good. But not with the intolerant! (Wilhelm Busch)
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acx01b
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was just trying to see if isopropylamine could make kmno4 reacting
ok ty
i got complete decoloration of kmno4 solution by mixing with excess H2SO4 and isopropylamine, that would mean isopropylamine is oxyded, but in what
???
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Nicodem
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to acetone of course
…there is a human touch of the cultist “believer” in every theorist that he must struggle against as being
unworthy of the scientist. Some of the greatest men of science have publicly repudiated a theory which earlier they hotly defended. In this lies their
scientific temper, not in the scientific defense of the theory. - Weston La Barre (Ghost Dance, 1972)
Read the The ScienceMadness Guidelines!
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