Re: pinhole homemade "ice-pack" recipe?

Date view	Thread view	Subject view	Author view	Attachment view

From: NFetter@aol.com
Date: Mon Mar 18 2002 - 20:26:03 PST

Next message: Karen A. Mendelow: "Middle School Teacher needed for Curriculum Review"
Previous message: Fred Stein: "Re: stream tables"

From: NFetter@aol.com
Message-ID: <18c.50ef409.29c817db@aol.com>
Date: Mon, 18 Mar 2002 23:26:03 EST
Subject: Re: pinhole homemade "ice-pack" recipe?

Hi Lou,
Cold packs are made by mixing an ammonium salt (ammonium nitrate) with solid
barium hydroxide. Stirring the mixture quickly produces a paste that gets
very cold (-10 degrees C) and evolves ammonia gas. Usually the mixture is
confined to a plastic bag so that the toxic barium compounds will not escape.
I do no know how diapers are used for making the cold pack.
Neil Fetter

Next message: Karen A. Mendelow: "Middle School Teacher needed for Curriculum Review"
Previous message: Fred Stein: "Re: stream tables"

Date view	Thread view	Subject view	Author view	Attachment view

This archive was generated by hypermail 2.1.3 : Mon Aug 05 2002 - 09:21:41 PDT