Yellow EDTA ph8, 0.5M

Dr. Hiranya S. Roychowdhury via (by hroychow from
Tue Jul 22 21:54:36 EST 2008

It is common, and varies from batch to batch. Usually it is not a problem.
 If using for sensitive rxns, simply filter it through a 0.2micron filter.

> Has anyone had problems with EDTA turning a clear yellow solution? I used
> the same protocol that others in the lab used: 186.1 g of EDTA, add 500 ml
> of distilled water, then add NaOH pellets until a pH of 8 is reached...but
> it still turns out yellow. Does anyone know how to solve the problem?
> Thanks.
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Hiranya S. Roychowdhury, Ph.D.
Asst. Professor,
Health & Public Services
Dona Ana Community College
New Mexico State University
Las Cruces, NM 88003

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