artemov
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Pinkish KNO3 Crystals
My KNO3 crystals seem to be a bit pinkish, is it normal?
Obtained from KCl and Calcium Ammonium Nitrate (both pure white). The supernatant is clear and colorless too.
 
[Edited on 6-2-2020 by artemov]
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Abromination
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I would give it a quick recryst, but for most uses it is probably pure enough. What are your reagent sources?
List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
--------------------------------
Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
Next: Na
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artemov
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Yah I will be recrystallizing later. CAN is for horticulture, but supposedly >99% pure. KCl is AR grade, but from China ...
Cheers.
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Tsjerk
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| Quote: | | The colour of potash varies (from white to dark red) based on its iron content. Typically, potash that contains more iron will be more reddish in
colour. Our potash grades that range from light pink to dark red in colour, do so because of the different levels of iron oxide naturally occurring in
the potash ore |
Link
Edit: wrong quote
[Edited on 6-2-2020 by Tsjerk]
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artemov
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Quote: Originally posted by Tsjerk  | | Quote: | | The colour of potash varies (from white to dark red) based on its iron content. Typically, potash that contains more iron will be more reddish in
colour. Our potash grades that range from light pink to dark red in colour, do so because of the different levels of iron oxide naturally occurring in
the potash ore |
Link
Edit: wrong quote
[Edited on 6-2-2020 by Tsjerk] |
It is indeed some kind of contamination. After recrys, the nice crystals near the top are pure white, while the compacted crystals at the bottom are
pinkish.
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