| About This Archive | | DCHAS-L 2017 Index | | DCHAS-L Yearly Index | |
Check out Safety Emporium for your N95, N99, and face shield needs.
|
Previous by Date: Subject: Re: [DCHAS-L] HF concentration and gluconate gel Date: Saturday, October 14, 2017 at 10:09:47 AM Author: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> |
Next by Date: Subject: Re: [DCHAS-L] HF concentration and gluconate gel Date: Sun, 15 Oct 2017 00:39:03 +0000 Author: "Orella, Charles J" |
Note also that the Honeywell guide allows for the soaking with iced benzalkonium chloride (at 0.13%) as a first aid treatment. Benzalkonium chloride solutions are relatively easily obtained and fairly inexpensive. H From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Ken Kretchman What Ralph states is quite correct. A number of years ago we started having Student Health pharmacy prepare this.for distribution at significantly reduced cost. That practice is discontinued for other reasons.. We also have had our fire / medical response group (EMTs) carry it with them since we cant be sure that all needing the material have it in their possesion. Ken Ken Kretchman, CIH, CSP Director, Environmental Health and Safety NC State University / Box 8007 / 2620 Wolf Village Way / Raleigh North Carolina 27695-8007 Email: Ken_Kretchman**At_Symbol_Here**ncsu.edu / Phone: (919).515.6860 / Fax: (919).515.6307 On Fri, Oct 13, 2017 at 12:08 PM, Stuart, Ralph <Ralph.Stuart**At_Symbol_Here**keene.edu> wrote: > >So my recommendation would be that whatever concentration HF you work with, having calcium gluconate gel available as a first aid measure would be a very good idea. --- For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
What is the shelf life of calcium gluconate gel? Why does it expire? Isn't the purpose of the gel is to provide calcium ions to complex with the fluoride ions? What is the physiological purpose of the gluconate? Would it make sense to treat a HF burn with expired gel rather than not use it while waiting to find an alternative treatment?
In the early 1950's at university, we used HF (stored in waxed bottles) rather cavalierly and without gloves in the determination of silica during a quantitative analysis class. Our professor clearly warned us to avoid skin contact but provided no first aid instructions. Fortunately, no one was burned. Over the years I have seen a number of HF burns of varying severity but no deaths. Immediate first aid invariably lessened the severity of these burns. Safety has come a long way, hasn't it? But there is still room for improvement and better understanding.
Ernest Lippert
From: "Alan Hall" <oldeddoc**At_Symbol_Here**GMAIL.COM>
---
For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org
Follow us on Twitter **At_Symbol_Here**acsdchas
Sent: Saturday, October 14, 2017 12:45 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] HF concentration and gluconate gel
Harry et al,
Also do remember that iced benzalkonium soaks are recommended by Honeywell (based on some quite good experimental data and relevant clinical experience) and are relatively inexpensive. However, training must be provided BEFORE use because holding an exposed workers hand or other exposed body part in a basin of ice and the solution can potentiallycause a significant frostbite injury adding to the chemical injury.
Best to let the worker hold the exposed body part in the solution and to take breaks when it becomes too cold. As with calcium gluconate injections, the endpoint is relief of quite excruatiating pain.
Alan
Alan H. Hall, M.D.
Medical Toxicologist
--- For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchasOn Fri, Oct 13, 2017 at 12:36 PM, Harry Elston <helston**At_Symbol_Here**midwestchemsafety.com> wrote:
Sent: Friday, October 13, 2017 12:09 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] HF concentration and gluconate gel
The challenge I have found with this strategy is maintaining a useful stock on hand requires rotating the gel on a regular basis (annually? I think). The expiration dates are very difficult to track accurately from outside the lab where the HF is being used and should be the responsibility of the lab using the material. Then there's the expense of replacing the gel. Many people interested in using HF look at the catalog price of the solution they want to buy and assume that's the total cost. It's not...
- Ralph
Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
603 358-2859
ralph.stuart**At_Symbol_Here**keene.edu
---
For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org
Follow us on Twitter **At_Symbol_Here**acsdchas
--- For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
Previous post | Top of Page | Next post