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Subject: Re: [DCHAS-L] I Remember When…”: Reflecting on the Evolution of Laboratory Safety

Date: Jun 11, 2026 15:45 UTC

Author: Mabrouk, Patricia <000022db23f825f9-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

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Subject: Re: [DCHAS-L] LC with Acetonitrile Ventilation

Date: Jun 11, 2026 19:41 UTC

Author: Emery, Paul <000022b311809bcc-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

From: Daniel Crowl <crowl**At_Symbol_Here**MTU.EDU>

Subject: Re: [DCHAS-L] I Remember When…”: Reflecting on the Evolution of Laboratory Safety

Date: Jun 11, 2026 16:15 UTC

Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>

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Demystify: 
HI All,

How about this story ....

A Flaming Student in Organic Chemistry Lab

In 1971, I was a senior at Penn State and took a required organic chemistry course with a laboratory component.

At that time lab safety was totally missing in all my lab courses at Penn State.  I suspect this was true of almost all universities at that time. 
- There was no instruction on lab safety.
- There were no handouts on lab safety.
- Safety Data Sheets (SDS) were not yet available and information on the hazardous properties of chemicals used was not provided. We would not understand this even if provided. 
- Safety glasses (no side shields), goggles and cotton lab coats were available at cost - but they were not required and it was left to the student to decide when to use them.
- There was no dress code for lab courses - students frequently wore shorts to lab when it was warm - no air conditioning in labs in those days.
- Students worked individually in all labs.
- We frequently used benzene to clean chemical crud off of our hands and equipment. 
- The only gloves provided were asbestos gloves for handling hot glassware. 

For this organic lab we did a lot of distillation of organic flammable and toxic chemicals - this was done in a small hood that was present in each student work area. No indication of hood function was available.

Distillation of volatile, flammable chemicals was done in glassware using a Bunsen burner flame as a heat source!

One lab session I was working as usual when I suddenly heard a pop and a loud scream.

I looked up and a student was on fire and heading my way!  Just like the flaming man seen in movies!

In my clumsy way to get out of his way I collided with the student, and he fell to the ground! The flames went out!

The student received significant burns to his left arm.

The student was taken to the hospital and was not present in the lab or class for several weeks.

He eventually returned to lab still with heavy bandages on his left arm.  He came over to me and thanked me for pushing him to the ground!  I paused and replied, "Your welcome!"

He told me that he had a round bottom glass flask that had developed a brown crud on the bottom of the flask. 

He did not want to pay the $5 replacement fee for the flask - a lot of money in those days, a draft beer was 25 cents - so he tried to dissolve the crud with a flammable liquid solvent.  That didn't work so he decided to heat it up with a Bunsen burner!

The Bunsen burner flame flashed back into the flask and flaming liquid was ejected from the flask over his left arm.  

This incident did not result in any changes to the laboratory procedures and was never mentioned in the class lecture or lab. 

Kids, don't let this happen to you!

Dan Crowl






On Thu, Jun 11, 2026 at 7:07 AM Gmurczyk, Marta <00001fa03b1fa040-dmarc-request**At_Symbol_Here**lists.princeton.edu> wrote:

As we celebrate 150 years of the American Chemical Society, June has been dedicated as the ACS Safety Pillar. I would like to invite members of this vibrant and highly knowledgeable community to join ACS staff in recognizing the remarkable evolution of laboratory safety, becoming a central and integral part of both chemistry education and research.

As scientists, we value data, but stories are also powerful indicators of meaningful and ongoing change.

We would love to hear your perspective.

 

  • How has laboratory safety changed over the course of your career, whether over the past 30, 20, or even 5 years?
  • What stands out most to you about this transformation?

 

Let’s explore this evolution through a personal lens, perhaps by sharing an “I remember when…” moment that captures how practices, expectations, or culture have shifted over time. These reflections can bring our collective progress to life and resonate deeply across our community.

 

I’m confident there are many powerful stories among us so let’s uncover them together!

 

 

One of my stories:

 

I got my undergraduate degree in Poland, and one of my professors had quite the dramatic introduction to lab safety: he was missing a finger due to a refrigerator explosion in his lab. Our class had about 100 students, and lectures were held in a huge auditorium. During the very first lecture, he proudly displayed his incomplete hand and declared that we were all very brave for choosing chemistry as our future profession. According to him, true scientists should be prepared to make sacrifices at the altar of scientific discovery.

I remember sitting there thinking that perhaps I was not ideal chemist material, since I had no intention of sacrificing any body parts in the name of science.

Of course, after that first lecture, we all laughed about this safety demo, but the professor himself was completely serious. He wore his injury almost like a badge of honor , proof of his “scientific stamina.”

Years later, I heard that his lab was eventually shut down because the refrigerator explosions kept happening, and one of them even destroyed a very expensive piece of instrumentation. I believe he retired shortly after that ban. In hindsight, perhaps the university finally decided that repeated explosions were not an essential component of scientific freedom.

 

Looking back, what once may have been seen as a “badge of honor” now feels more like a reflection of poor safety practices and a lack of professional responsibility. Today, a faculty member proudly displaying injuries from preventable laboratory accidents would likely be viewed not as a scientific hero, but as a liability to the institution. I hope that, thanks to all our collective efforts, our discipline is evolving. Modern chemistry starts recognizing that good scientists are not the ones who cause and survive accidents; they are the ones who create strong safety cultures so accidents do not happen in the first place.

 

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