I was also bothered by the cotton sweatshirt sleeves.  Although it mentions the generation of sulfur dioxide, there is no mention of what that gas is or why a demonstrator should be concerned.

Other problems with the clip:

- the beaker was almost completely filled with sugar.  Not safe at all.

- no reference to just how hot it becomes.

- besides the obvious generation of carbon, the generation of water vapor, and the generation of sulfur dioxide (my tablet doesn't do subscripts!) part of what is given off (as a spray) is unreacted sulfuric acid.  A nasty surprise for anyone handling the carbon column.

- and of course, no reference to safety precautions or disposal.

A disappointment.

Eddie McGrath

Sent from Samsung tablet

-------- Original message --------
From Lee Latimer <lhlatimer**At_Symbol_Here**MINDSPRING.COM>
Date: 12/23/2015 7:33 PM (GMT-05:00)
To DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject Re: [DCHAS-L] Fwd: See the Chemical Reaction That Takes Place When Sulfuric Acid Is Poured on Household Sugar

I was disappointed to see the person doing the demo having no covering on lower arms (such as a lab coat) and using the thin disposable gloves rather than something a bit thicker and going up the arm to cover wrist and lower arm.  The splash potential is not reflected here.  Nor is a cogent explanation of what is happening, including no mention SO2 evolution.

Lee Latimer


On 12/23/15, 5:21 AM, "Frankie Wood-Black" <fwblack**At_Symbol_Here**CABLEONE.NET> wrote:

I have seen the reaction.  This is another demonstration that widely circulated.  I was a bit surprised to see where the video hit the "popular" press.  This video is on a bit larger scale than the one that typically gets circulated.  I have seen a smaller "snake" version that usually shows up around Halloween.

---

From: "Sandra Koster" <skoster**At_Symbol_Here**UWLAX.EDU>
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Sent: Tuesday, December 22, 2015 1:18:55 PM
Subject: Re: [DCHAS-L] Fwd: See the Chemical Reaction That Takes Place When Sulfuric Acid Is Poured on Household Sugar

Of course anything that gives off SO2 should be done in a hood.  Besides that I should report that a colleague who did this as a demo rinsed the residue and disposed of it in a wastebasket--which later caught the paper on fire.  Surprise, surprise!  Guess it wasn't rinsed enough.

Sandra Koster
University of Wisconsin-La Crosse

On Tue, Dec 22, 2015 at 1:02 PM, Frankie Wood-Black <fwblack**At_Symbol_Here**cableone.net> wrote:

This came out this morning.

---

From: "TheBlaze" <email**At_Symbol_Here**email.theblaze.com>
To: fwblack**At_Symbol_Here**cableone.net
Sent: Tuesday, December 22, 2015 1:00:03 PM
Subject: TheBlaze Article Shared by a friend: See the Chemical Reaction That Takes Place When Sulfuric Acid Is Poured on Household Sugar

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