Date: Mon, 04 Nov 2002 16:04:10 -0600

Author: Gary Karshner

Subject: Re: Touch paper

Post:

Tim,
Touch paper is a paper when heated generates a lot of smoke. It
basically smolders when it burns. Try a piece and you see what happens. It
shouldn't be much to be concerned about storing is as smolders rather the
burns. I would store it where you store other flammable materials like
paint or alcohol.
There is also flash paper that is nitrocellulose that when
ignited does what the name implies. Over long periods of time it will be
come unstable and should be stored in a metal cabinet.
Lastly the "tickle paper" that John talked about is "Nitrogen of
Iodide" which is very unstable explosive when dry, and I doubt if you could
move the paper much less store it. A feather brushing it will set it off.
It is made up on the spot, and only in small amounts. It is a nice example
of an endothermic reaction in chemistry, and really wakes a class up.

Hope this helps

Gary


At 01:06 PM 11/4/02 -0700, you wrote:

>Hello everyone:
>
>I just found an old stash of Cenco "Touch Paper", No. 77595. A quick check
>of a catalog says it is " a good source of smoke that doesn't require
>burning. Ideal for our Gas Convection Apparatus(77590) and similar
>experiments." How is this used and how dangerous is it to store? Thanks
>for any advice.
>
>Tim Cook
>
>Physics & Astronomy Instructional Resource Team
>Arizona State University, Department of Physics & Astronomy
>PO Box 871504, Bldg PS Rm F470, Tempe, Arizona 85287-1504
>480-965-4020; fax 480-965-7954; tim.cook@asu.edu

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