Hello Laurie,
My experience is that it is never okay to dump chemicals into the sink. I work in a production lab and we currently put all hplc waste in a grounded 55 gallon drums and an approved waste company pick it up to dispose it properly. By law we don't have the authority to treat wastes like waste companies do. I hope this helps.
John Nguyen
On Oct 4, 2016 11:59 AM, Laurie Yoder <laurie.yoder@EMU.EDU> wrote:
>
> We have a research group that wants to begin a HPLC project using tetrafluoroacetic acid/acetonitrile mix (diluted to 40% in water) as the solvent. The student working on the project has used this procedure at another institution and said they dumped the waste solvent down the drain. Really? I thought this would still have some characteristic hazard. Does anyone else have experience with this mixture, and how do you dispose of it properly?
>
> --
> Laurie M. Yoder
> Assistant Professor of Chemistry and Chemical Hygiene Officer
> Eastern Mennonite University
> 1200 Park Road
> Harrisonburg, VA 22802
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