A University of Kansas graduate student was hospitalized in critical condition after he ingested a toxic chemical while working in a lab.
The university says it believes the student, whose name has not been released, ingested sodium azide accidentally while working Wednesday night in Malott Hall.
Lawrence Douglas County Fire and Medical inspected the fifth-floor labortatory early Thursday but found no hazardous materials.
The university opened the laboratory and building for normal operation after the inspection.
Sodium azide is an odorless and colorless preservative commonly used in school labs.
