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Topic: Dehydration of zinc acetate hydrate  (Read 4844 times)

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Offline The Guy

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Dehydration of zinc acetate hydrate
« on: January 01, 2015, 03:57:59 AM »
Is there any simple method for dehydrating the zinc acetate hydrate?

I want to get zinc acetate dehydrate Zn(OAc)2 from Zn(OAc)2.(H2O)2
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Offline kriggy

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Re: Dehydration of zinc acetate hydrate
« Reply #1 on: January 01, 2015, 08:44:13 AM »
I would try to heat it
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Offline unsu

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Re: Dehydration of zinc acetate hydrate
« Reply #2 on: January 01, 2015, 04:55:34 PM »
Quote from: kriggy on January 01, 2015, 08:44:13 AM
I would try to heat it

No, you can't make anhydrous zinc acetate by simple heating/dehydration.
Zn(CH3COO)2 melts first at 242 °C, and then it gives Zn4O(CH3COO)6, and then it sublimes just like Be4O(CH3COO)6
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Offline unsu

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Re: Dehydration of zinc acetate hydrate
« Reply #3 on: January 01, 2015, 05:37:40 PM »
An idea: you can try to find the phase diagram for Zn(OAc)22-water. Probably at a certain composition of an aqueous solution of zinc acetate you can crystallize anhydrous zinc acetate in a certain temperature interval...
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Offline Borek

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Re: Dehydration of zinc acetate hydrate
« Reply #4 on: January 01, 2015, 05:49:59 PM »
If talking about ideas - treatment with acetic anhydride can work.
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Offline The Guy

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Re: Dehydration of zinc acetate hydrate
« Reply #5 on: January 04, 2015, 11:41:56 PM »
Thank you for you help
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