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Author: Subject: Order a chemical, get something else
woelen
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[*] posted on 25-9-2019 at 04:36


I had a similar experience with cobalt sulfate. The material I received was a fairly fine powder, which dissolves in water, but the solution is not entirely clear. On standing for a day, I get a clear rose/red solution with a very thin layer of solid matter, settled on the bottom.

I also intend to recrystallize the cobalt sulfate. You wrote you used dilute H2SO4. What concentration of the acid did you use and what concentration of cobalt sulfate did you use?




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karlos³
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[*] posted on 25-9-2019 at 08:14


Wow I am lucky this has never happened to me so far!
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[*] posted on 25-9-2019 at 18:42


Not wrong chemical but I have ordered some cyclohexanone from ebay- listing as for 1L and received 1mL... Knew it was too good to be true!



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