From: Samantha D <samantha.dannenberg**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Benzaldehyde
Date: Tue, 18 Feb 2014 19:55:08 -0500
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: CAFarhdB9+b6tWUUTVnz0pFwh4HLitkuhL8+rNn4MnaqDK8xVBw**At_Symbol_Here**

In my experience, peroxide formers tend to get cloudy if peroxides have formed. If it's cloudy, don't move it, if it's just a solid, it's probably the acid derivative.

Ultimately, if you're unsure or uncomfortable, you should call a hazardous waste removal company. I always find it's better to be safe than sorry.


On Tue, Feb 18, 2014 at 7:48 PM, Bob Alaimo <rjalaimo**At_Symbol_Here**> wrote:
I agree most likely benzoic acid.

Sent from my iPad

On Feb 18, 2014, at 4:18 PM, Glen Ernst <geernst**At_Symbol_Here**GMAIL.COM> wrote:

It has most likely just oxidized up to benzoic acid.

On Tue, Feb 18, 2014 at 6:59 PM, Wayne Phan <Wayne.Phan**At_Symbol_Here**> wrote:

I just did a lab safety inspection and found a bottle of Benzaldehyde with crystal formation. The bottle is dated back to 5-25-1989. I am not sure if this is peroxide or just polymer being formed. What are your thoughts? If it is peroxide, what is the proper protocol for handling it?



Samantha Dannenberg-Lushtak
Queens College, CUNY

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