About This Archive  | DCHAS-L 2008 Index   | DCHAS-L Yearly Index   | DCHAS-L Home Page
person wearing a disposable face shield and surgical style mask

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date:
Subject: flammability class vs NFPA number
Date: Mon, 3 Mar 2008 10:44:22 -0500
Author: Sammye Sigmann 		Next by Date:
Subject: Re: flammability class vs NFPA number
Date: Mon, 3 Mar 2008 13:10:22 -0500
Author: Kim Auletta

(Note: This post is 17 years old and may contain outdated information.)


Date: Mon, 3 Mar 2008 11:54:06 -0500
Reply-To: ILPI <info**At_Symbol_Here**ILPI.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: flammability class vs NFPA number
Comments: cc: Sammye Sigmann
In-Reply-To: <LISTSERV%200803031044227968.0280**At_Symbol_Here**LIST.UVM.EDU>

Definitions of flammable liquid classes:
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9752&p_text_version=FALSE

You can read, but not print or view the 704 standard by going here 
and following the appropriate links:
http://www.nfpa.org/aboutthecodes/list_of_codes_and_standards.asp

As a brief summary, NFPA 704 assigns:

Rating: 4
	Flash point below 22.8 C (73 F) and a boiling point below 
38.8 C (100 F)

Rating: 3
	Flash point below 22.8 C (73 F) and a boiling point at or 
above 38.8 C (100 F)
	OR
	Flash point at or above 22.8 C (73 F) and below 38.8 C (100 F)

Rating: 2
	Flash point at or above 22.8 C (73 F) and below 93.4 C (200 F)

Rating: 1
	Flash point at or above  93.4 C (200 F)
	OR
	Flash point at or above 35 C (95 F) that does not sustain combustion
	or has a certain water-miscible composition etc.
	OR
	Has no fire point.

Best regards,

Rob Toreki

>Can anyone tell me how the number assigned in the NFPA diamond for
>flammability corralates (if it does) with the flammability class of 
>the solvent? 
>That is, are all "4"s on the diamond solvents that are in Class IA & 
>IB, etc.  I
>do not have the code books, and so far have not been able to locate this info
>on the web.
>
>Thanks in advance for any wisdom,
>Sammye

-- 
   =====================================================
Safety Emporium - Lab & Safety Supplies featuring brand names
you know and trust.  Visit us at http://www.SafetyEmporium.com
esales**At_Symbol_Here**safetyemporium.com  or toll-free: (866) 326-5412
Fax: (856) 553-6154, PO Box 1003, Blackwood, NJ 08012

Previous post   |  Top of Page   |   Next post


The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.