From:
Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject:
Re: [DCHAS-L] Waste treatment question
Date:
Sep 11, 2023 21:42 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<179609938.13761.1694468538151**At_Symbol_Here**mail.yahoo.com>
In-Reply-To:
<BN8PR04MB5939F4BA693F280ADD26995BACEDA**At_Symbol_Here**BN8PR04MB5939.namprd04.prod.outlook.com>
And that will depend on the amount of the paints that are cadmium, chromium, nickel, manganese, barium (lakes), or other metals. I also looked at all the pigments in several of their lines of acrylic paints, and all the usual suspects are there.
Even more important: Once an artist or teacher buys this system, they are going to use it on whatever brand of acrylics they are using. Most schools have more than one type. And some of these have even more hazardous pigments.
I have no idea which of those metals will ionize and end up in the waste water going down the sink.
Monona
On Monday, September 11, 2023 at 03:53:40 PM EDT, Cynthia Woodbridge <cwoodbridge**At_Symbol_Here**ggc.edu> wrote:
Hi Monona,
I agree that this sounds like waste treatment. My questions are: how do we know the schmutz is safe to go in the trash? And what is in the water – is that actually safe to go down the drain? I would want some data
before I followed the directions as given.
Cynthia
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Monona Rossol
Sent: Friday, September 8, 2023 11:53 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Waste treatment question
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I was just blown away by a product used in the art schools now. It is for disposing of liquid waste from acrylic paints. Be aware, that some of these paint pigments contain
regulated metals such as cadmium, chrome VI, and more. There are also benzidine pigments and a lot of azo organics.
The product is designed to eliminate toxic waste from these paints. Since these are acrylics, the waste consists of water and acrylic paint. The instructions are to use a special
bottle, that can deliver measured amounts of two different chemicals, and add each separately with stirring and settling time until there is clear water and schmutz at the bottom. There is filter paper and a colander so you can filter out the schmutz and
throw it in your trash and then pour the clear water down the drain.
Sounds like waste treatment to me. Wadda all'y'all think?
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