From: davivid <davivid**At_Symbol_Here**WELL.COM>
Subject: [DCHAS-L] Letter to the National PTA regarding the rainbow flame demo
Date: Fri, 21 Jun 2019 15:36:30 -0700
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: e1cf88dd-fee1-b7ad-c8e9-53dd3b919806**At_Symbol_Here**

Here is a letter I just emailed to the National PTA. Let's hope this
helps get some progress on the issue.

Dave Lane
Clavis Technology Development

-------- Forwarded Message --------
Subject: Dangerous classroom demonstration
Date: Fri, 21 Jun 2019 15:31:09 -0700
From: davivid
To: info**At_Symbol_Here**

Dear PTA Gatekeeper

I write to call your attention to a common classroom demonstration that
injures students in several incidents every year. I hope that the PTA
can help end this practice by informing parents and schools of the danger.

The demonstration is typically called the "Rainbow Flame" or similar. It
involves solutions of various metal salts dissolved in alcohol that are
set on fire. The different metal salts give various colored flames,
hence "rainbow flame". If alcohol is poured near flame or other ignition
source the alcohol can suddenly erupt from the bottle in a phenomenon
called "flame jetting". The jet of flaming alcohol can severely burn
anyone in the path of the flames even as far as ten feet away.

Here are some links describing flame jetting.
Small Bottle, HUGE Fireball (How Flame Jetting Works)
Dangerous ‰??Flame Jetting‰?? Phenomenon Kills Hundreds Every Year

Here are links to some recent instances of flame jetting that have
injured students

Here is information on making classroom demonstrations safer
A Safer "Rainbow Flame" Demo for the Classroom

I ask your help in making classrooms safer for all students.

Thank You
Dave Lane

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