What are the flammable limits of ammonia at atmospheric pressure by volume?

The flammable limits of ammonia at atmospheric pressure are significant because they define the concentration range in which ammonia can ignite and sustain combustion in the presence of an ignition source. The correct answer indicates that ammonia has a lower flammable limit of approximately 16% by volume and an upper flammable limit of about 25% by volume.

Understanding these limits is crucial for safety and handling procedures in environments where ammonia is used or stored. When the concentration of ammonia in the air is within this range, it poses a fire hazard, necessitating the implementation of appropriate safety measures to mitigate risks. This range helps professionals to assess potential fire hazards and conduct risk analyses regarding the use and storage of ammonia in various applications.

Knowledge of the specific flammable limits contributes to the safe design and operation of facilities that work with ammonia, ensuring compliance with safety standards and regulations.