From:
Jeffrey Lewin <jclewin**At_Symbol_Here**MTU.EDU>
Subject:
Re: [DCHAS-L] TLC plate waste
Date:
Oct 3, 2022 17:10 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<CAEwQnqhpie-dqqeVkc_Z8Ue5KZH+J7Q66jpJPjZOu0TbPr2NQA**At_Symbol_Here**mail.gmail.com>
In-Reply-To:
<CAJrSzc526QRALRJCmnfPBzr8Zu5d5A7zPJL=nqta0oW7hKOf9g**At_Symbol_Here**mail.gmail.com>
Here's the
Supelco SDS.
Neither of the items you list are considered hazardous...that said disposal depends on 1) does their use make them a listed or characteristic hazardous waste? 2) If not, what is your institution's (and waste disposal company's) policy on chemical disposal (some institutions collect everything, even if not hazardous)? 3) Also, what is your institution's (and waste disposal company's) policy on disposal of glass? You may have to place it in something more secure than a bag.
Good morning all,
Happy Monday! I hope you all had a great weekend.
What is everyone's practice on TLC plate waste? I am re-evaluating how we collect waste in the organic teaching labs.
We use 2 different plates for 2 different experiments:
- Bakerflex precoated flexible TLC sheets (JT44634)
- Supelco TLC Silica Gel 60 F254 (1.05735.0001)
The SDS for the bakerflex is says 99-100% amorphous silica with no known hazards. I cannot find the SDS for the other one.
With amorphous silica, all I could find was the danger of having crystalline silica contamination and the plates only generate dust if they fracture.
Would it be best if I just have everyone collect it in a silica gel solid waste container or is that overkill and we should just put it in regular trash (but first bag it before throwing it in the trash)?
Thanks!
Without Wax,
Wendy Hom
--
Jeff Lewin
Director of Chemical Laboratory Operations
Research Integrity Office
Laboratory Operations
205 Lakeshore Center
Michigan Technological University
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