Ascorbic Acid POL

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Radazz
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Ascorbic Acid POL

#1 Post by Radazz » Wed Mar 13, 2019 10:34 pm

Ascorbic Acid in water, grown in vacuum chamber.
10x pol
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Enjoy,
Radazz
Arnold, Missouri
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jimur
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Re: Ascorbic Acid POL

#2 Post by jimur » Wed Mar 13, 2019 10:38 pm

nice job
"You're never too old to have a happy childhood"
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billbillt
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Re: Ascorbic Acid POL

#3 Post by billbillt » Wed Mar 13, 2019 11:24 pm

Great image...

BillT

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Radazz
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Re: Ascorbic Acid POL

#4 Post by Radazz » Thu Mar 14, 2019 1:57 am

Thank you gentlemen.
I wasn’t sure it would make a difference, but it seems to have impacted the evaporation pattern.
Radazz
Arnold, Missouri
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jimur
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Re: Ascorbic Acid POL

#5 Post by jimur » Thu Mar 14, 2019 10:26 pm

Radazz wrote:Thank you gentlemen.
I wasn’t sure it would make a difference, but it seems to have impacted the evaporation pattern.
Radazz
I have considered a DIY vacuum chamber chamber for a few experiments. A couple of questions please.
Were you using a commercial vacuum chamber?
What was the vacuum measurement and did it vary?
I presume the vacuum was held until sample was completely dry.

Thanks,
jim
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Radazz
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Re: Ascorbic Acid POL

#6 Post by Radazz » Sun Mar 17, 2019 9:56 pm

Jim,
Commercial two quart vacuum chamber and pump by BAC
-30 Hg. Stayed steady

Dried completely in vacuum
Took much longer than I was expecting.

Radazz
Arnold, Missouri
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jimur
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Re: Ascorbic Acid POL

#7 Post by jimur » Mon Mar 18, 2019 12:59 am

Thanks for the reply Radazz. I've wondered about the use and possible effect of vacuum in crystallography. Yes, it can take a fairly long time for the solutions or colloidal dispersions to dry even in normal atmosphere. I find the nicer crystals more often with slower growth but do use a slide warmer quite frequently with good results. I'm not always so patient an individual. :)
"You're never too old to have a happy childhood"
Leitz Wetzlar SM-LUX
Olympus IM
Canon 450D

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