Calcium Ammonium Phosphate
Jul 06, 2019 • 8:07 PM UTC
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Puchina
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This compound is often used as a fertilizer, especially if the soil is acidic. It can also be used in a cold pack (where I got the crystals). When the solid is exposed to water, there is an endothermic (cooling) reaction. Here I dried out the salt and used crossed polarizing filters to view the crystals.
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