Around 6 p.m. this evening, a hazardous chemical spill took place in the basement between buildings 66 and 68. The chemical is believed to be acetonitrile. The spill is not serious (Cambridge Fire has categorized it as a “class 1″ spill, the least serious type).
Buildings 66, 68, and E17 were evacuated.
MIT Police, MIT Facilities, Cambridge Fire, and MIT Environmental Health & Safety all responded. The spill is believed to be contained and there are no known injuries, as of 8 p.m.