What is the correct procedure for disposing of dry ice?

The appropriate procedure for disposing of dry ice is to place it in a bag and tie a knot. This method safely contains the dry ice during its sublimation process. By sealing the dry ice in a bag, the gas that forms as it sublimates (which is carbon dioxide) can be safely released without creating pressure build-up that could lead to an explosion. It's essential to handle dry ice properly to prevent hazards associated with its extreme cold and the risk of asphyxiation due to carbon dioxide buildup in confined spaces.

Other disposal methods such as pouring dry ice down the sink or throwing it in the trash are unsafe. Pouring it down the sink can cause plumbing issues or environmental harm, as dry ice does not dissolve in water and may cause blockages. Leaving it exposed in a cabin poses a risk of others coming into contact with it, potentially leading to cold burns, and can also lead to hazardous concentrations of CO2 if not properly ventilated.