Dry ice

dry ice
Dry Ice is the trademark for carbon dioxide in its solid form, frozen at -109.3° F or -79.5° C. It is primarily used as a refrigerant. Dry Ice does not melt but goes directly from a solid to a gas in a process called sublimation. It is generally accepted that French chemist, Charles Thilorier, was the first to record the appearance of it in 1835. The Dry Ice Corporation of America first trademarked the name Dry Ice in 1925.