Around midnight on Dec. 2, 1984, an accident at a Union Carbide pesticide plant in Bhopal, India, resulted in 45 tons of poisonous methylisocyanate escaping from the facility.
More than 40 tons of methylisocyanate spilled from a Union Carbide-owned pesticide factory in Bhopal, India, in 1984, killing more than 20, 000 people in the world’s worst chemical disaster.