Chlorine gas has a characteristic color and is how many times heavier than air?

Chlorine gas has a characteristic yellow-green color and is approximately 2.5 times heavier than air. This property is significant for pool contractors and safety personnel to understand, as it affects how chlorine gas disperses in the atmosphere. Being heavier than air means that if chlorine gas is released, it will tend to settle in low-lying areas rather than dispersing upwards, which can create a hazardous situation in enclosed or poorly ventilated spaces.

This understanding is critical for anyone working with chlorine in a commercial pool setting, as it informs the design of ventilation systems and emergency response strategies. Knowing the density of chlorine relative to air emphasizes the importance of proper storage, handling, and monitoring of chlorine levels to prevent accumulation and enhance safety for both workers and pool users.