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Topic: Unknown clusters on NH4(H2PO4) + 1/2 CaSO4  (Read 1702 times)

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Offline OuJej1

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Unknown clusters on NH4(H2PO4) + 1/2 CaSO4
« on: December 30, 2019, 03:14:45 PM »
Hey,
I made a mixture of 7 NH4(H2PO4) and 3 1/2 CaSO4, adding 3 H2O afterwards to make a solution, to which was added a food colorer Cl42090. I used some of it for Crystal growth, but decided to keep some in a mug. About four days later, once it has turned solid again, pieces of white matter started developing on top. I'm interesting in knowing what are these - the mixture was exposed to air (with a smellable amount of chlorine). Is it  simply a product of oxidation? I tried to provide a picture, but it couldn't be uploaded. Thanks in advance!
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Offline AWK

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Re: Unknown clusters on NH4(H2PO4) + 1/2 CaSO4
« Reply #1 on: December 30, 2019, 05:43:26 PM »
CaNH4PO4·H2O or Ca(NH4)2(HPO4)2·H2O
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Offline OuJej1

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Re: Unknown clusters on NH4(H2PO4) + 1/2 CaSO4
« Reply #2 on: December 30, 2019, 06:33:22 PM »
Quote from: AWK on December 30, 2019, 05:43:26 PM
CaNH4PO4·H2O or Ca(NH4)2(HPO4)2·H2O

Thank you very kindly :)
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