Final answer:
Radiographic fixer is considered a hazardous waste because it contains toxic and corrosive chemicals that can harm human health and the environment.
Step-by-step explanation:
Radiographic fixer is considered a hazardous waste because it has a high concentration of chemicals that are toxic and corrosive. The chemicals used in the fixer, such as silver nitrate, can be harmful to human health and the environment if not properly handled, stored, and disposed of.
For example, the silver in the fixer can contaminate water sources if it is improperly disposed of, leading to the pollution of aquatic ecosystems and the potential harm to organisms.
In addition, the fixer also contains other chemicals that are harmful if inhaled or ingested, such as developer agents and stabilizers.