Author Topic: EDTA disodium salt - a question  (Read 2287 times)

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Antoncho

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EDTA disodium salt - a question
« on: March 11, 2002, 08:43:00 AM »
Oh ye, my beeloved brethren!

There's a question - alas, as yet purely theoretical - that confuses SWIM's mind lately. Namely, he has some photographic product that is called EDTA disodium salt.

Can it bee used as a substitute for plain EDTA (for Knoevenagel condensation of p-dMeO-BA w/MeNO2) hoping that acetic acid would convert it to free acid anyway?

Or would it bee more wise to convert it to its free form first - but how? SWIM would imagine that EDTA is pretty water-soluble. Can it bee xtracted w/a non-polar or isolated in some other way?

Can it bee air-dried? is it stable to air?

Thank ye in advance for all yer input,

Antoncho

terbium

  • Guest
Re: EDTA disodium salt - a question
« Reply #1 on: March 11, 2002, 08:59:00 AM »
Methinks that you are confusing EDA (ethylenediamine) which can be used as the Knoevenagel condensation catalyst and EDTA (ethylenediamine tetraacetic acid) which cannot.

Antoncho

  • Guest
Re: EDTA disodium salt - a question
« Reply #2 on: March 11, 2002, 12:07:00 PM »
Yep, Terbium, you're right - a pure brainfart on my behalf :-[  :-[  :-[

Ethylenediamine diacetate, not ethylenediammonium tetraacetic acid :(

Not a slightest resemblance or hope to convert between the two :(  Sorry...

Antoncho