The best container is the polystyrene box that the dry ice was shipped in. ![]() Store dry ice in an insulated container - the better the insulation, the slower the rate of sublimation to CO₂ gas. ![]() The molecular weight of dry ice is 44.01. The CO₂ used is food grade and is non-toxic, it is the same chemical that gives drinks their fizz.ĭry ice density is around 1.6 g/cm3, however the bulk density is around 1g/cm3 just like water. This snow is compressed and extruded at around 1500 psi to form pellets, slices and blocks of dry ice. It is released through a nozzle to 1 bar at which point dry ice 'snow' is created. The liquid is stored at 20 bar and around -20C. Liquid Carbon Dioxide (CO₂) is the source of all dry ice products. In the UK the CO₂ in dry ice is from a recycled source and so is not making a contribution to global warming. ![]() The product can only exist at -79C and it maintains this temperature by sublimation. ![]() It has the unusual property of 'subliming', that is going from a solid to a gas without passing through a liquid phase and this is how it gets the name dry ice. Frequently Asked Questions What Is Dry Ice?ĭry ice is solid carbon dioxide (CO₂).
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