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Topic: Getting anhydrous sodium carbonate  (Read 5148 times)

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Offline Arya

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Getting anhydrous sodium carbonate
« on: March 27, 2012, 12:10:22 PM »
Hello,
May I ask if I can heat Decahydrate sodium carbonate in the oven at 110 degrees to get anhydrous sodium carbonate?
If not, Can I mix decahydrate sodium carbonate with calcium chloride to get calcium carbonate precipitates?
Thanks
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Offline stewie griffin

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Re: Getting anhydrous sodium carbonate
« Reply #1 on: March 27, 2012, 12:44:14 PM »
110C may eventually get you there. I've dried to anhydrous using 150C.
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Offline Stepan

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Re: Getting anhydrous sodium carbonate
« Reply #2 on: March 27, 2012, 11:42:05 PM »
Some methods recommend 250C
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Offline Dan

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Re: Getting anhydrous sodium carbonate
« Reply #3 on: March 28, 2012, 03:13:17 AM »
I flame dry under vacuum.
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jenniferadam

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Re: Getting anhydrous sodium carbonate
« Reply #4 on: April 05, 2012, 03:40:44 AM »
Dry it over 200C, you will get result after rigorously drying at higher than 200C.
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Offline AWK

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Re: Getting anhydrous sodium carbonate
« Reply #5 on: April 05, 2012, 04:08:25 AM »
From phase diagram anhydrous sodium carbonate exists over 109 C

http://www.genchem.com/pdf/SodaAshTech.pdf
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