Chlorine water is often stored in brown-coloured bottles for safety reasons. The brown colour of the bottles serves as a protective measure to prevent the decomposition or degradation of the chlorine water due to exposure to light.
Chlorine is a highly reactive and corrosive chemical. When exposed to light, especially ultraviolet (UV) light, chlorine can undergo photochemical reactions that break down the chlorine molecules and degrade the solution. This degradation can lead to the loss of chlorine's effectiveness as a reagent and may even produce hazardous by-products.
The brown colour of the bottles acts as a barrier to UV light, reducing the risk of photochemical degradation of the chlorine water. By storing chlorine water in brown-coloured bottles, laboratories can help maintain the stability and integrity of the reagent, ensuring its efficacy and safety for use in chemical experiments.
In summary, the brown-coloured bottles provide protection against light-induced degradation of chlorine water, preserving its quality and safety for laboratory use.