Date: Thu, 3 Nov 2011 08:47:09 -0700
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Sender: DCHAS-L Discussion List <dchas-l**At_Symbol_Here**>
From: Sam Appiah <histolabdiagnostics**At_Symbol_Here**YAHOO.COM>
Subject: Re: Hydrofluoric acid burns
In-Reply-To: <D00B3B3653854B409FFB3653993C90860796DF9C**At_Symbol_Here**>

Hi to you all,
I have just joined your esteemed body and i must say that i am
gaining a lot from the recent discussions on a wide range of issues
relating to safety in chemical laboratories.
I own a medical diagnostic lab and i am asking my scientists
to enrol as members as soon as possible.
Samuel Appiah
Histolab diagnostics centre ltd
Plot 8 Block 9
P O BOX KS5421,
Tel: 051 80714, 0246775584
Email: histolabdiagnostics**At_Symbol_Here**

From: Ellen M Sweet <ems325**At_Symbol_Here**CORNELL.EDU>
Sent: Thursday, 3 November 2011, 11:50Subject: Re: [DCHAS-L] Hydrofluoric acid burns

VWR sells calcium gluconate in small tubes for HF exposure. It's called Calgonate and comes as a 3 pack.
Ellen Sweet
Hazardous Materials Coordinator
Cornell University Environmental Health and Safety
office: (607) 254-8644
cell: (315) 730-8896
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Laster, Willard (Lincolnshire)
Sent: Wednesday, November 02, 2011 11:30 AM
Subject: Re: [DCHAS-L] Hydrofluoric acid burns
Can you provide supplier information for the Mg Gluconate salve? I did a quick internet search and did not get any hits.  We work withHF in small quantities and I would like to have it available to the analysts.
Willard Laster                                                   
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of 8524828hau**At_Symbol_Here**COMCAST.NET
Sent: Tuesday, November 01, 2011 11:48 AM
Subject: Re: [DCHAS-L] Hydrofluoric acid burns
Prolonged soaking in magnesium gluconate solution.   Fluoride ion is a metabolic poison that eventually penetrates/kills tissues to substitute for hydroxide ions in bone.  The magnesium chelates the fluoride ion, thus rendering unavailable as a metabolic poison if there is sufficient solution/agitation to rinse away the chelated (ion-pair) fluoride ion. 

HF contact is not initially uncomfortable until many hours after contact.  EVERY LAB in which HF is regularly used (in a hood) should have magnesium gluconate salve available in a container attached to the hood.  Use the salve for any suspect skin contact, then seekmedical attention for soaking in magnesium gluconate solution.  Many institutions prohibit working alone (e.g., evening/off hours) with HF. 

Preferably wear double gloves with gauntlets covering the cuff of the lab coat.  Do not allow exposed wrists.  Use proper technique for removing gloves to prevent skin contact. For routine, higher volume use, wear rubberized sleeves over the lab coat sleeves.  Eye/face protection is essential.

Prevention of contact is much easier than post-contact treatment.

David Haugen
Argonne National Laboratory
From: "ErnestLippert" <ernielippert**At_Symbol_Here**TOAST.NET>
Sent: Monday, October 31, 2011 10:24:00 PM
What is thecurrent best protocol for the treatment of hydrofluoric acid burns? Has the Honeywell publication "Recommended Medical Treatment for Hydrofluoric Acid Exposure", Ver. 1.0, May 2000 been superseded?
Ernest Lippert
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