Jose - 13-6-2019 at 15:45
I neutralized ammonium carbonate from urine with acetic acid and let the liquid evaporate. When dry, I noticed these squarish and romboid crystals.
What are they?
They werent there before evaporation.
![20190613_192427.jpg - 4.1MB](https://www.sciencemadness.org/whisper/files.php?pid=615143&aid=75936)
Jose - 13-6-2019 at 15:46
The brown color is from ferric acetate from another solution.
fusso - 13-6-2019 at 19:53
Cuboid crystals are likely NaCl.
Why did you put Fe acetate into there?
Jose - 17-6-2019 at 07:55
Yes, they are sodium chloride. I washed one of them and tasted it. Now I placed cardboard in a cup full of urine and I got crystals. Are they nitrate
crystals?
![20190617_115110.jpg - 1.5MB](https://www.sciencemadness.org/whisper/files.php?pid=615474&aid=75979)