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Author: Subject: MEK peroxide or not?
Bedlasky
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[*] posted on 1-7-2021 at 20:33
MEK peroxide or not?


Hi.

I opened yesterday jar with MEK and saw some white crust on the lid. Lid was was covered before with some thin plastic film inside, so I think that the crust is just plastic destroyed by ketone. But I am not sure and think that this also may be peroxide. Is it possible or it is nonsense?




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macckone
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[*] posted on 1-7-2021 at 20:37


It is possible and if it is then it is dangerous.
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Bedlasky
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[*] posted on 1-7-2021 at 21:04


Thanks. I opened the jar, put in to the lid some acetone, ammonium ferrous sulfate and little bit of HCl. In to MEK I added some ammonium ferrous sulfate and little bit of HCl. Ammonium ferrous sulfate make nice green solution, no signs of rusty Fe(III). And that solid in the lid looks like wierd goo. When I carefully mixed ferrous salt in the lid and I very easily scraped off some plastic during mixing and see metal underneath it. So it seems that white solid is just plastic.



If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

I can offer GC analysis of samples. Just U2U to me for more info.

"An old friend once told me something that gave me great comfort. Something he had read. He said that Mozart, Beethoven and Chopin never died. They simply became music." Dr. Robert Ford, Westworld
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macckone
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[*] posted on 1-7-2021 at 21:08


plastic is much better than organic peroxide.
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Bedlasky
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[*] posted on 1-7-2021 at 21:13


Yeah it is :D.



If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

I can offer GC analysis of samples. Just U2U to me for more info.

"An old friend once told me something that gave me great comfort. Something he had read. He said that Mozart, Beethoven and Chopin never died. They simply became music." Dr. Robert Ford, Westworld
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