What can be done to prevent the injury?
Caustic chemicals should be used only when necessary. It's important to follow directions on the label for safe use. Protective clothing, gloves, and safety glasses should be used appropriately. Particular care should be taken when using the acids and bases listed above. Even very small exposures can cause burns.
Chemicals should be kept in a locked cabinet out of the reach of children. Materials like ammonia and bleach should not be mixed together. Chemicals that can cause burns or other toxic problems should only be used in well-ventilated areas. Chemicals should not be stored in containers that may be used later for food or drink.