From:
Samuella Sigmann <000017d7b6a35b3a-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject:
Re: [DCHAS-L] [External] Re: [DCHAS-L] Hazardous Fluoride Chemicals
Date:
May 9, 2023 17:21 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<a6d2bea8-9265-e33c-4971-810b8b88b45e**At_Symbol_Here**appstate.edu>
In-Reply-To:
<BYAPR02MB5686FAE485C38767DA0196588C769**At_Symbol_Here**BYAPR02MB5686.namprd02.prod.outlook.com>
I will just take a moment here to point out that the ACS Committee
on Chemical Safety is currently in the process of preparing an HF
Tip Sheet for laboratories. This is being prepared at the request of
our Emerging Issues Subcommittee Chair to a member based on the
conversations that stemmed from a previous discussion on this topic.
Stay tuned...
Sammye
On 5/9/2023 11:24 AM, Jack Reidy wrote:
Hi all,
My understanding is that generally
speaking, calcium gluconate is useful for exposures to
compounds that create accessible fluoride ions. So for
example, I wouldn’t be very concerned about sulfur
hexafluoride because I believe those bonds are quite stable.
This makes things like sodium fluoride tricky because it comes
down to the specific situation and individual/institutional
risk tolerance.
Sincerely,
Jack Reidy (he/him)
Research Safety Specialist, Assistant
Chemical Hygiene Officer
Environmental Health & Safety
Stanford University
484 Oak Road, Stanford, CA, 94305
Tel: (650) 497-7614
I acknowledge that the land on which I live
and work is the ancestral and unceded land of the
Muwekma Ohlone Tribe. As an
uninvited guest on these lands, I am a beneficiary of the
ongoing displacement of the Ohlone people. I pay my respects
to the Native peoples, past and present.
Off the top of my head, fluorosilicic
acid, hypofluorous acid, and fluoroacetic acid.
Good
afternoon DCHAS,
It
came to my attention recently that hydrofluoric acid
isn’t the only chemical requiring treatment with
calcium gluconate gel and segregation from glass. A
brief conversation with a cleanroom friend confirmed
a few I found online, but does anyone else have any
chemicals, mixtures, or resources for identifying
chemicals with comparable hazards as hydrofluoric
acid?
Below
I’ve listed the names of the chemicals with SDS
references to HF burns, use of calcium gluconate
gel, and/or that they react with glass. Any
additional insight, input, or suggestions would be
greatly appreciated.
|
Sulfur Hexafluoride
|
|
Ammonium Bifluoride
|
|
Ammonium Fluoride
|
|
Boron Trifluoride
|
|
Buffered oxide etchant
(BOE)
|
|
Diethlyamino sulfur
trifluoride (DAST)
|
|
HF-Pyridine Complex
|
|
Hydrofluoric Acid (HF)
|
|
Knolls Reagent
|
|
Lithium
hexafluorophosphate
|
|
Sodium Fluoride
|
|
Sulfur tetrafluoride
|
|
Tetrafluoroboronic
Acid
|
|
Xenon Difluoride
|
(My
first request to DCHAS)
Best,
-P
Paul R.
Emery, MSc
Safety
Advisor
Yale
Environmental Health and Safety
135 College
Street, Suite 100
New Haven,
CT 06510
Phone (203)
737-3521
Mobile
(475)
261-6163
Email
paul.emery**At_Symbol_Here**yale.edu
--- For more information about the
DCHAS-L e-mail list, contact the Divisional membership
chair at
membership**At_Symbol_Here**dchas.org
--
--- For more information about the DCHAS-L
e-mail list, contact the Divisional membership chair at
membership**At_Symbol_Here**dchas.org
---
For more information about the DCHAS-L e-mail list, contact the
Divisional membership chair at membership**At_Symbol_Here**dchas.org
