Junurita - 16-3-2026 at 04:09
I need cyanide for some experiment so ive made it.
Mix 20g NaOH, 20g Urea and 10g coal to the bowl and heat to 600c
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Now, to test, I put a piece into the Fe2+/Fe3+ solution, and a blue precipitate of Prussian Blue formed, proving that I successfully synthesized CN-.
To extract CN-, I dissolved the crude product in EtOH alcohol and evaporated it. I obtained 15ml of concentrated CN- solution along with NaCN
crystals.
Finally, I transferred them into a small glass jar.
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I cleaned the items by washing them with bleach, which oxidizes CN- into harmless CNO-, which can be poured down the drain.
( my english is not too good )
[Edited on 17-3-2026 by Junurita]
Junurita - 16-3-2026 at 04:10
why i cant upload images? 
Texium - 16-3-2026 at 06:52
Well your first link is not an actual link, and the rest have the tag [bad img] instead of [img]?
Alternately (and preferably) you could upload the images directly to the forum using the Attachment option instead. That way they will remain on the
forum’s servers and be visible as long as the forum exists, rather than relying on an external hosting site. You’ll just have to reduce the size
of the images a bit if they are more than 4096x4096.
Junurita - 16-3-2026 at 19:54
oh no, i still can show the image >
Texium - 17-3-2026 at 06:23
Those aren’t valid URLs. I don’t know where you’re trying to pull the images from, but it doesn’t work however you seem to think it does.
I suggest again that you upload the images to the forum using the Attachment option when you post. At this point, start over with a new thread.