Why is the Mercuric nitrate titration technique for measuring chloride being phased out?

The Mercuric nitrate titration technique for measuring chloride is being phased out largely due to the hazardous waste issue it creates. This method involves the use of mercuric compounds, which are toxic and pose significant environmental and health risks. The disposal of mercury-containing waste can lead to serious contamination issues, making it increasingly difficult and costly to handle in compliance with environmental regulations.

As safety standards become more stringent and laboratories strive to reduce their environmental footprint, alternatives that are less harmful and do not generate hazardous waste are preferred. These alternatives often yield accurate results while being safer for both lab personnel and the environment, which is why there is a shift away from the Mercuric nitrate titration technique.