Thursday, January 22, 2009

Lab Safety - Ignore at your own peril

Once again, a life was needlessly lost because of poor safety procedures in the lab.

Researcher Dies After Lab Fire

UCLA research assistant burned in incident with tert-butyl lithium
By Jyllian Kemsley

A research assistant in the University of California, Los Angeles, department of chemistry and biochemistry died on Jan. 16 from injuries sustained in a laboratory fire that occurred in December, the university has confirmed.

UCLA officials declined to provide C&EN with specific details of the incident, pending an investigation. But according to a Dec. 30, 2008, e-mail to C&EN from department chair Albert J. Courey, university investigators believe that on Dec. 29, Sheharbano Sangji, 22, was drawing tert-butyl lithium (t-BuLi) from a bottle into a syringe when the plunger came out of the syringe barrel. The chemical, which ignites spontaneously in air, splashed onto Sangji's clothes and set them on fire. Sangji was burned on her hands, arms, and upper torso, for a total of 40% of her body. After initial treatment at Ronald Reagan UCLA Medical Center, she was transferred to the Grossman Burn Center in Sherman Oaks, Calif., where she died.

An unconfirmed description of the accident was posted on Jan. 7 to the ACS Division of Chemical Health & Safety e-mail list by Debbie M. Decker, a member of the division and a UC Davis chemical safety officer. It says that Sangji was wearing safety glasses, a sweater made of synthetic material, nitrile gloves, and no lab coat and that the t-BuLi ignited her sweater and gloves.

Synthetic materials such as polyester are "analogous to solid gasoline," says Neal Langerman, the founder of the company Advanced Chemical Safety and a consultant to the ACS Committee on Chemical Safety. "Once it ignites, it burns just like a hydrocarbon, so it really is inappropriate lab apparel by itself." A lab coat might have prevented the sweater from igniting and reduced the extent of Sangji's injuries, he says, although he emphasizes that he is speculating. Fire-resistant gloves are also available, Langerman says, although they are bulky and reduce dexterity, which can also lead to accidents. "That problem hasn't been adequately solved," he adds.

Sangji graduated from Pomona College in May 2008. She was working at UCLA while applying to law school, says her former adviser at Pomona, chemistry professor Daniel J. O'Leary, who is now at Bowdoin College. Sangji spent three years working on peptide chemistry in O'Leary's lab. "She was just a wonderful person," O'Leary says. "Many, many people are mourning her loss."

When asked whether he is reconsidering safety procedures in his lab at Bowdoin, O'Leary says, "Just about every organic chemist works with hazardous and dangerous things. This can only serve as a wake-up call to redouble efforts to be safe."

The incident remains under investigation by the California Division of Occupational Safety & Health and the Office of the State Fire Marshal, says James Gibson, director of UCLA's Office of Environment, Health & Safety.

January 22, 2009

I wonder why she did not do the extraction inside a glove box under an inert atmosphere like argon, which is SOP in all the labs I had worked in if one is handling energetic materials. Even wikipedia has it under the safety section (about handling butyllithium).

I also cannot believe she did not wear a lab coat. That's cardinal sin number 1. More details here.


AcidFlask said...

The lab coat part is really unusual. However TBL is hardly an energetic compound by chem lab stds, "merely" one that is very moisture sensistive.

takchek said...

Someone else pointed in the Chemistry blog the aggravating factor that led to her death was probably her attire.

If you work with a highly flammable substance and are wearing highly flammable clothing, that is just wrong and bad.

All of the various versions from various news sources of this tragic event explicitly say the fire ignited the gloves and the sweater. That is key. The damage came from the burning sweater. Burnt gloves, oh well, no more hands but not life threatening.