Which of the following represents the IDLH value of acetic acid?

The IDLH (Immediately Dangerous to Life or Health) value for acetic acid is 50 ppm. This value indicates the concentration in the air that poses an immediate threat to life or would cause irreversible health effects. In the case of acetic acid, exposure at levels around or above this concentration can lead to significant health hazards such as respiratory distress or irritation to the eyes and skin, and it is critical for safety protocols in industrial and laboratory settings to be informed by these guidelines. Understanding IDLH values helps in establishing safe exposure limits and ensuring that proper protective measures are in place when handling hazardous substances.