How Long Will 5 Lbs Of Dry Ice Last In A Cooler?

Have you ever wondered how long 1 pound of dry ice can last? Well, let’s break it down for you. Dry ice, when stored properly in an insulated cooler (more on that below), undergoes sublimation, transforming from a solid to a gas, at an approximate rate of 5-10 pounds every 24 hours. So, if you anticipate needing 15 pounds of dry ice for your upcoming day, it’s advisable to purchase around 20-25 pounds the day before to ensure you have an adequate supply. Proper storage and planning are key to making the most of your dry ice.

The duration that 1 kilogram of dry ice lasts can vary depending on its storage conditions. When left at room temperature on a table, 1 kilogram of dry ice typically sublimates (transforms from a solid to a gas) within 6 to 8 hours. However, if you place 10 kilograms of dry ice in a Styrofoam box at room temperature, it will generally last for 1 to 2 days. When you increase the quantity to 20 kilograms and store it in a Styrofoam box at room temperature, it can endure for 3 to 4 days. For extended preservation, such as when you store 20 kilograms of dry ice in a deep-freezing room within a Styrofoam box, it can last approximately 4 to 5 days. These durations provide a better understanding of how the amount and storage conditions affect the longevity of dry ice.