What color is chlorine gas?

Chlorine gas is actually colorless. This characteristic is key to its identification and safety handling in water treatment processes. When chlorine is released, it may have a yellow-green tint, but in its pure gaseous form, it does not exhibit a distinct color. Its pale green hue might be noticeable in high concentrations or not when viewed under certain conditions; however, for practical identification and classification, chlorine gas is considered colorless. Understanding this property is crucial for operators in water treatment facilities to ensure proper handling and safety measures are observed. Misidentifying the color of chlorine can lead to unsafe practices or inadequate responses to leaks or spills.