Sciencemadness Discussion Board

What are those crystals

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.

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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?

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