An article on chemical considerations related to the cleanup of non-biohazardous hazardous materials spills. For examples,
Concentrated Solutions of Acids and Bases
Spills of concentrated solutions of acids and bases must be neutralized first and then disposed of appropriately. Please note that concentrated solutions of acids and bases that contain other chemicals, such as heavy metals, retain the hazards of those chemicals after neutralization.
Neutralization of spills of strong oxidizing acids, such as perchloric acid and chromic acid, are potentially explosive and should only be performed by qualified and fully trained personnel.