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Re: How much Fe in FeEDTA?
> EDTA has 4H's, 4O's 2N's. but when it form FeEDTA, it lose it's four H's.
> and it become ? + [Fe(+3)(EDTA)]-
> if so... then what do they use for cation?
> Na? K?
FeEDTA is 15.21% (Merck Index, although one can calculate this out). The
cation you asked about is Na+ (at least in the common commercially
available form)... in case you're curious the full formula is C10 H12 Fe N2
Gregory Morin, Ph.D. ~~~~~~~Research Director~~~~~~~~~~~~~~
Seachem Laboratories, Inc. www.seachem.com 888-SEACHEM