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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: dmitriy on March 31, 2006, 10:31:14 AM

Title: Fe (III) citrate
Post by: dmitriy on March 31, 2006, 10:31:14 AM

Who knows anything about solubility of Iron (III) citrate in water and its dependance on pH?
Thanks in advance! CAS number is 3522-50-7

Title: Re:Fe (III) citrate
Post by: Albert on March 31, 2006, 11:37:59 AM

Generally speaking, solubility of compounds where the anion is a base increases with the acidity of the solution.

Title: Re:Fe (III) citrate
Post by: dmitriy on March 31, 2006, 11:53:37 AM

I am more interested in solubility in water because bottle of this substance does not give this information nor sigma aldrich site as well. Is it possible that when storing this substance is converted to iron hydroxide

Title: Re:Fe (III) citrate
Post by: Albert on March 31, 2006, 11:57:17 AM

Quote from: dmitriy on March 31, 2006, 11:53:37 AM

I am more interested in solubility in water

In you opening post you also asked about depandance on pH.

Quote

Is it possible that when storing this substance is converted to iron hydroxide

I don't think so, unless you want to.

Mind you, is it iron (III) citrate or ammonium iron(III) citrate?

Title: Re:Fe (III) citrate
Post by: dmitriy on March 31, 2006, 12:06:06 PM

It is iron (III) citrate

Title: Re:Fe (III) citrate
Post by: SoFTiCE on April 01, 2006, 10:32:25 AM

You shoul find Ks than alpha for citrate acid , alpha=f(ph)