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Topic: Disodium salt  (Read 2975 times)

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Offline CyBuddy

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Disodium salt
« on: September 15, 2013, 05:02:47 AM »
Hello :)
I have a little question : I'd like to know why we need to use disodium salt to prepare an EDTA (Ethylenediaminetetraacetic acid) solution ?! Why don't we use directly the tetraacid H4EDTA ?  ??? ??? Thanks for your answer !!!  ;D
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Offline discodermolide

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Re: Disodium salt
« Reply #1 on: September 15, 2013, 05:38:03 AM »
Solubility of the acid in water is lower than the di-sodium salt?
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Offline CyBuddy

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Re: Disodium salt
« Reply #2 on: September 15, 2013, 11:27:40 AM »
Well I guess this isn't obvious :/
Anyone help ?
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Offline discodermolide

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Re: Disodium salt
« Reply #3 on: September 15, 2013, 11:41:44 AM »
No need to be rude. If it's obvious what answer were you expecting?
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Offline CyBuddy

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Re: Disodium salt
« Reply #4 on: September 15, 2013, 11:45:15 AM »
I  didn't mean to be rude, sorry if you felt like I did :) What I wanted to say is that disodic salt is used instead of the tetraacid, but I don't see how we could use the solubility if it's not given ot us :)
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Offline discodermolide

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Re: Disodium salt
« Reply #5 on: September 15, 2013, 11:50:40 AM »
It's ok.
Perhaps you were expected to find out the solubilities for yourself?
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Offline CyBuddy

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Re: Disodium salt
« Reply #6 on: September 15, 2013, 11:58:19 AM »
well I have to answer this question without knwoing them actually ;)
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Offline Borek

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Re: Disodium salt
« Reply #7 on: September 15, 2013, 02:50:35 PM »
Who told you you "need to"? I have seen solutions made from acid as well as from disodium and tetrasodium salts. What is the intended application of the solution?
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