VIDEO: The accidental spill of a potentially hazardous chemical sent a lab technician to the hospital and left the building on the University of Utah campus that houses the chemistry department evacuated for hours Tuesday evening. It reopened Wednesday morning. Firefighters and hazmat technicians responded just after 6 p.m. to the Henry Eyring Building, 315 S. 1400 East after the spill was reported. “Someone in one of the labs had dropped a glass container which obviously broke on the ground,” said Capt. Tony Allred, hazardous materials response team captain for Salt Lake City Fire. “The glass container was identified to be containing boron trifluoride diethyl etherate.” Allred said when mixed with water — even water present in the surrounding atmosphere — the chemical can become extremely toxic in small parts per million as hydrofluoric acid.