Lucy said: "I don't know what you are supposed to use..."
So much cool flowing water that the cooling effect overbalances the exothermic solution of sulfuric acid in water.
I've also had students notice that washing acid off skin with running water was adding water to acid, against all advice for solution making. It's fun to talk with the sharp ones who are book smart, but have little practical experience. Too many books, no Scouting/camping/cooking/auto repairÉ.
Sheila M. Kennedy, C.H.O.
Safety Coordinator | Teaching Laboratories
Chemistry & Biochemistry |University of California, San Diego
9500 Gilman Dr. | La Jolla, CA 92093-0303
(858) 534 - 0221 | MC 0303 | YORK HALL 3150
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
On Behalf Of Lucy Dillman
Sent: Thursday, July 12, 2018 12:59 PM
Subject: Re: [DCHAS-L] teaching STOP! DROP! ROLL!
About the sulfuric acid issue: the MSDS (pardon my age using that term) says putting water on sulfuric acid generates heat and should be avoided...I don't know what you are supposed to use...anyway, that led to delay in getting the person the treatment (safety shower) that was needed and she ended up with scarring.
On Thu, Jul 12, 2018 at 11:36 AM, Stuart, Ralph <Ralph.Stuart**At_Symbol_Here**keene.edu> wrote:
> >I recently realized this instruction is more useful to those nearby than to the person on fire.
Not to distract from Sheila's question, but this reminds me of a story related at this week's CSHEMA conference. A student in a teaching ended up with sulfuric acid on their face. They and the TA didn't start washing their face for 10 minutes because they weren't sure:
1) whether the liquid was water or acid (that question answered itself) and
2) whether they had "permission" to use the safety shower if it was acid.
This was a good reminder to me that in addition to training everyone how to respond, it's valuable to empower them to respond on their own.
Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
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