The facility, which produces industrial chemicals, failed to immediately report to proper authorities the release of a hazardous substance. The release occurred when a chemical reactor vessel became overpressurized and released its contents in the form of a fog cloud. Plant personnel sprayed down the fog using fire hoses and stopped the contaminated runoff. It did not cross the facility's boundaries.
Potassium hydroxide is a hazardous substance used to remove impurities from chemical products.
It is a noncombustible solid, but may react with water and other substances to start a fire. Exposure to it may irritate the eyes, skin, and respiratory system.