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Subject: Re: [DCHAS-L] Gist of the List--ACS Chemical Health & Safety

Date: Sep 3, 2024 20:50 UTC

Author: lhlatimer**At_Symbol_Here**MINDSPRING.COM

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Subject: [DCHAS-L] NEW LAB SAFETY PUBLICATIONS FROM ACS

Date: Sep 4, 2024 11:14 UTC

Author: Peter Reinhardt <reinhardt1440**At_Symbol_Here**GMAIL.COM>

From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

Subject: Re: [DCHAS-L] DEHP risk. Was: [DCHAS-L] Yes Yeand Another Question.

Date: Sep 3, 2024 23:56 UTC

Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>

Message-ID: <559371090.1802823.1725407804514**At_Symbol_Here**mail.yahoo.com>

In-Reply-To: <D55E1B37-1BE7-4A3F-9FBE-7197DF85B171**At_Symbol_Here**ilpi.com>

Demystify: 
And all you chemistry teachers should know that right down the hall from you there is a art teacher who revels in repurposing all types of articles that have been discarded and who rarely limits students to using their materials "as directed."  Creativity is unfettered by facts.

I implore you to look in on these people regularly. 

Monona




On Tuesday, September 3, 2024 at 06:45:35 PM EDT, Info <info**At_Symbol_Here**ilpi.com> wrote:


Yep - I knew someone perceptive like yourself would follow up on that, Monona.

BTW, that’s a great insight into how SDS’s are supposed be written.  If a product will release a hazardous chemical during “normal conditions of use or a foreseeable emergency” per CFR 1910.1200 paragraph (b)(2) then that hazard needs to be considered in the hazard classification performed by the SDS author.  So, if you’re selling chunks of styrofoam that are going to be cut up by set designers, builders, surfboard manufacturers etc. (and hot wires are the way that’s done on large scale), then the SDS hazard determination must take the styrene and benzene releases into account.  But if you’re selling a polystyrene sign or front panel for an extinguisher panel (as we do), those are considered “articles” which specifically exempted because they are not meant to be cut and formed. The HazCom standard defines “article” as:

"Article" means a manufactured item other than a fluid or particle: (i) which is formed to a specific shape or design during manufacture; (ii) which has end use function(s) dependent in whole or in part upon its shape or design during end use; and (iii) which under normal conditions of use does not release more than very small quantities, e.g., minute or trace amounts of a hazardous chemical (as determined under paragraph (d) of this section), and does not pose a physical hazard or health risk to employees.

There’s a discussion of the article exemption, along with risk vs hazard, in the SDS FAQ: http://ilpi.com/msds/faq/partb.html#article 

I love this discussion because it’s a great example of thinking about different uses/audiences/applications.  That’s a life skill we will all use in numerous ways to great success and effect. Not thinking outside the box so much as making sure you understand the size and shape of the box, who’s in it and what they are doing.  A simple example - today I did a crossword with a clue of “lead head” - is that lead as in leadership or lead as in element # 82?  Three letters.  The answer….wait for it….“mis”, as in “mislead”.  

Rob



On Sep 3, 2024, at 1:47 PM, Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:

Well......OK for you guys and your uses.  But we have people who purchase huge blocks of polystyrene foam and hot wire cut it on a regular basis to make huge sculptures and set pieces.  Styrene and benzene are major decomposition products so a little warning up front would make these people more liable to also consider the decomposition products. 

And two additional warnings.  1) some of the products sold as Styrofoam are actually a nitrile-containing polymer whose decomposition products don't include nitrogen oxides and cyanide and are not properly listed in the SDS and 2) I have some worksite monitoring lab data showing the benzene even at 72 inches from the hot wire is about 5 times the new TLV of 0.02 ppm. 

Monona





On Tuesday, September 3, 2024 at 12:58:06 PM EDT, Info <info**At_Symbol_Here**ilpi.com> wrote:


That’s a common plasticizer found in all kinds of products which, like many commonly used phthalates, is an endocrine disruptor; see https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5842715/
See https://www.p65warnings.ca.gov/fact-sheets/di2-ethylhexylphthalate-dehp for some examples of common usage in commerce.

Prop 65 is well-intentioned, as a warning of this nature should cause the manufacturer and potential purchasers of the products to think about implementing alternatives that do not contain known carcinogens and fetotoxins.  And there have been several notable victories in that vein.  In practice, it’s a nightmare of blanket CYA overwarnings and disclaimers that provide no context and numb people to the goal of the labelling. For example, we have vendors who put the warning on polystyrene signs and finished products because styrene is on the list.

While it’s always good to limit one’s exposure to chemicals of this nature, if one is being pragmatic, I’d have to say a minimal added exposure from a *potential* one time use (or being in the same room as the kit) in a lifetime of ubiquitous exposure from other sources presents a de minimus added risk.  Personally, I’d have no issues with it, but if I had spare time, I might dash an email off to the manufacturer suggesting they find an alternative.

Rob Toreki


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On Aug 28, 2024, at 6:49 PM, Murphy, Dr. Ruth Ann <000019862d8e7db2-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:

Hello, All,
 
Yes, we are all hopeful Monona and Jack are already much better!
 
My question concerns the safety of lab first aid kits with the following statement. WARNING:  This product can expose you to chemicals including Di(2-ethylhexyl)phthalate, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to etc. (State of California P65 warnings).
 
Thank you in advance.
 
Ruth Ann Cook Murphy, Ph.D.
Professor of Chemistry
University of Mary Hardin-Baylor
900 College Street
Belton, TX  76513-2599
Phone 254.295.4542
Accepting Christ is life's greatest decision; following Christ is life's greatest adventure.
 
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