Seattle firefighters were called to the University of Washington for a hazardous materials spill or leak.
KIRO 7 first heard about the incident at 9:52 a.m. on Monday.
The location, 3749 Mason Road Northeast in Seattle, is Wilcox Hall, the university's materials science and engineering building.
Seattle fire said students dropped a small amount of hydrochloric and nitric acid on the floor of the lab. When mixed, those chemicals create a potentially dangerous gas.
The floor where the spill occurred was evacuated and a hazmat team cleaned up the spill.
No one was sickening or injured.
Hazardous materials spill evacuates Wilcox Hall at UW pic.twitter.com/CFWePswgC0
— Dave Wagner (@DaveKIRO7) May 9, 2016
Cox Media Group