| About This Archive | | DCHAS-L 2018 Index | | DCHAS-L Yearly Index | |
Check out Safety Emporium for your N95, N99, and face shield needs.
|
Previous by Date: Subject: Re: [DCHAS-L] Auto-ignition temperatures Date: Tuesday, September 11, 2018 at 10:41:48 AM Author: Jeffrey Lewin <jclewin**At_Symbol_Here**MTU.EDU> |
Next by Date: Subject: Fwd: [DCHAS-L] National Library of Medicine ToxTutor adds new content Date: Tue, 11 Sep 2018 11:20:14 -0400 Author: DCHAS Membership Chair |
From Sigma-Aldrich SDS:
GHS Label elements, including precautionary statements Pictogram Signal word Danger Hazard statement(s)
H250
Catches fire spontaneously if exposed to air.
H261 In contact with water releases flammable gases. Precautionary statement(s)
P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P222 Do not allow contact with air. P223 Do not allow contact with water. P231 + P232 Handle under inert gas. Protect from moisture. P280 Wear protective gloves/ eye protection/
face protection. P335 + P334 Brush off loose particles from skin. Immerse in cool water/ wrap in wet bandages.
Tilak
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
On Behalf Of Jeffrey Lewin
Sent: Tuesday, September 11, 2018 9:42 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] Auto-ignition temperatures
The Alcoa GHS SDS I have for aluminum powder lists:
Product identifier ATOMIZED ALUMINUM POWDER
Auto-ignition temperature 1202 ¡F (650 ¡C) layered
Hazard statement May form combustible dust concentrations in air.
However, they also list DOT as not regulated.
The DOT Hazard Material Table lists:
Aluminum powder, coated as DOT 4.1 (Flammable Solid)
Aluminum powder, uncoated as DOT 4.3 (Dangerous when wet)
Jeff
On Tue, Sep 11, 2018 at 5:34 AM Debbie M. Decker <dmdecker**At_Symbol_Here**ucdavis.edu> wrote:
Hi All:
We're working through a list of materials classified as H250 (pyrophoric) but are having a terrible time finding auto-ignition data to back up that classification. It appears to have evaporated off Sigma SDS' and other sources (CRC, PubChem, ChemSpider, CAMEO) don't seem to have it either. Most irritating, to me, is the classification of powdered aluminum as pyrophoric with no auto-ignition data to back it up - just a note "ignites on contact with air." If that were the case, the entire pyrotechnic and propellant industries would have folded up by now.
Does anyone out there have auto-ignition data in a format they're able/willing to share? Or have any insight into where the data has gone off to?
Thanks mucho,
Debbie
Debbie M. Decker, CCHO, ACS Fellow
Past Chair, Division of Chemical Health and Safety
Councilor and Programming Co-Chair
University of California, Davis
dmdecker**At_Symbol_Here**ucdavis.edu
Birkett's hypothesis: "Any chemical reaction
that proceeds smoothly under normal conditions,
can proceed violently in the presence of an idiot."
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
--
Jeff Lewin
Chemical Safety Officer
Compliance, Integrity, and Safety
Environmental Health and Safety
Michigan Technological University
Houghton, MI 49931
O 906-487.3153
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at
membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
Previous post | Top of Page | Next post