Monona is correct. If the the "neutralization" is not part of the process/reaction doing so after the fact is waste treatment and cannot be done without being licensed to do so. For example, students would do a Hess's Law experiment mixing HCl and sodium bicarbonate. At the end of the lab, I can "neutralize " the collected waste as that occurs secondarily as part of the experiment.

Denise

On Sunday, August 2, 2020, Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**lists.princeton.edu> wrote:

I think this is called waste treatment and not allowed without a license. Monona


-----Original Message-----
From: JOHN L STRAUGHN <0000120dde6ec15c-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Sent: Sun, Aug 2, 2020 05:34 AM
Subject: Re: [DCHAS-L] neutralizing ammonium sulfide

I'd try this: small scale, look for sulfur precipitation (may clear with further addition of peroxide), nitrogen gas bubbling and further NOx generation (red-brown fumes, ie. in a hood) possible. Get a recipie that works and share it in glory!

---

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> on behalf of 00000eca7dd1d088-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU <00000eca7dd1d088-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Sent: Friday, July 31, 2020 12:06 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Subject: Re: [DCHAS-L] neutralizing ammonium sulfide

You might look into adding hydrogen peroxide, perborate or some persulfate derivative.

Dan

-----Original Message-----
From: Nickie Norton <nnorton**At_Symbol_Here**SHEPCHEM.COM>
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Fri, Jul 31, 2020 10:35 am
Subject: [DCHAS-L] neutralizing ammonium sulfide

Hi All,

We are using ammonium sulfide in excess in a reaction in water. What is the proper way to dispose of the aqueous ammonium sulfide? We are concerned that if we add bleach we will make chloramine. Does anyone have a way to convert the ammonium sulfide to ammonium sulfate?

Thank you,

Nickie Norton

Research Chemist

The Shepherd Chemical Company

4900 Beech Street

Norwood, OH 45212

nnorton**At_Symbol_Here**shepchem.com

513-842-9332

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

--

Lehigh University COVID-19 Staying Connected:

Lehigh University COVID-19 Updates and FAQ

Student Remote Learning

Student Access and Success Page

Denise Beautreau

Director, Student Access & Success

Office of Diversity, Inclusion & Equity

Alumni Memorial Building, Suite 201

27 Memorial Drive West, Bethlehem, PA 18015

Office: (610) 758-3262

Email: deb313**At_Symbol_Here**lehigh.edu

Web: https://diversityandinclusion.lehigh.edu

"The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well."

"No one has ever become poor by giving."

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas