Which chemical is referred to regarding the maximum use level discussed?

The chemical referred to regarding the maximum use level discussed is anhydrous ammonia. This is a common refrigerant utilized in industrial refrigeration systems and is governed by various regulatory standards due to its properties and potential hazards. Anhydrous ammonia is recognized for its efficiency as a refrigerant, but it is also considered toxic and has specific threshold limits established for its safe handling and use.

Regulations by organizations like OSHA and EPA dictate the maximum allowable concentrations in the workplace, as well as proper safety measures to minimize exposure risks. Awareness of these levels is crucial for operators, ensuring not only compliance with safety regulations but also the health and well-being of personnel working in environments where anhydrous ammonia is present. Understanding the maximum use level associated with anhydrous ammonia is important for safe operation practices and emergency preparedness in industrial refrigeration settings.