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From: Emery, Paul <paul.emery**At_Symbol_Here**YALE.EDU>
Subject: Re: [DCHAS-L] Hazardous Fluoride Chemicals
Date: May 9, 2023 19:12 UTC
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: <PH8PR08MB8530982ADCC81C5506BD0DFBF1769**At_Symbol_Here**PH8PR08MB8530.namprd08.prod.outlook.com>
In-Reply-To: <BL0PR14MB3795DF0FBEA6F6666C779A69C7769**At_Symbol_Here**BL0PR14MB3795.namprd14.prod.outlook.com>
Hi all - Thank you all so much for your input.
Tilak – Thanks so much for the links. You’re absolutely right that a complete risk assessment is the only way to make sure they know what they’re doing, working with, and might be accidentally creating in the process of their work.
Jonathan - I was also getting the sense that some of the SDS were the result of some over-conservative copy/paste usage on someone’s part, so I do appreciate the input on BF3.
Mark – Is Fluoroacetic acid a concern as-is or is this the decomposition concern? I ask because similar to Jonathan’s input on BF3, I would think that C-F bond is pretty stable.
Jack – Agreed. I was skeptical of SF6 as well, but I kept it because of the SDS references to calcium gluconate, HF burns, and keeping away from glass.
Kristi – I totally agree with you and Dr. Chandra. They could easily be creating HF or an HF-releasing compound in the course of their work.
For context, I’m considering updates to our EHS HF resources to include HF-releasing compounds. We’ve previously implemented many of the recommendations from the HF exposures links that Tilak provided (HF signage, calcium gluconate gel,
prohibition on working alone, etc). I’m just trying to reduce the possibility of someone making an improper storage choice or overlooking calcium gluconate during an exposure.
Adding to my list:
KHF2
Fluorosilic Acid
HOF
Fluoroacetic acid*
Maybe not…:
SF6
BF3
Cheers,
-P
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Kristi Ohr
Sent: Tuesday, May 9, 2023 11:20 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Hazardous Fluoride Chemicals
It’s also important to consider the conditions under which potentially fluoride liberating materials are used. That creates a fairly broad range of risk running the gamut from not a problem to equivalent to working with HF.
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Mark Ellison
Sent: Monday, May 8, 2023 5:09 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Hazardous Fluoride Chemicals
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Off the top of my head, fluorosilicic acid, hypofluorous acid, and fluoroacetic acid.
Mark
On Mon, May 8, 2023 at 3:24 PM Emery, Paul <paul.emery**At_Symbol_Here**yale.edu> wrote:
