by KYW's John McDevitt
One person was being treated and dozens of others were evacuated after a hazardous chemical spilled inside a lab at St. Joseph's University's science center.
The mishap occurred around 12:30pm.
Fire officials say the substance -- benzene -- can be toxic when inhaled or absorbed through the skin.
A decontamination corridor was set up near the spill site to help anyone exposed to the chemical rinse it off.
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