This is a good point,

Materials which can decompose, outgas, or volatilize will often have pressu
re relief caps if they are not flammable - most Bulk manufacturers install 
these in the drums and IBCs used for transport, per DOT guidelines. However
 some of the repackagers fail to do this, I've observed.

Two examples that come to mind are Hydrogen Peroxide and Bleach.

Todd

Todd Perkins
Airgas Mid AMerica
p3wt3r**At_Symbol_Here**charter.net

--- On Mon, 9/28/09, List Moderator  wrote:

> From: List Moderator 
> Subject: Re: [DCHAS-L] Pressure-Generating Liquid
> To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
> Date: Monday, September 28, 2009, 2:23 PM
> From:=A0"Kohler,
> Chris E" 
> Date:=A0September
> 28, 2009 3:19:02 PM EDT
> Subject:=A0RE:
> [DCHAS-L] Pressure-Generating Liquid
> 
> Formic acid will
> decompose to form carbon monoxide and water and can
> over-pressurize the container. I have heard that some
> manufacturers are installing pressure relief caps
> now.Chris

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