From liquid to snow
Liquid CO₂ is stored under pressure. When the pressure is released, part of it flashes to gas and the rest freezes into fine solid snow.
Pellets and rice
The snow is forced through a die plate in a pelletizer. The hole size sets the product: small holes make rice (around 1/8") for blasting and fast cooling; larger holes make pellets (around 5/8") for general cooling and shipping.
Why fresh matters
Dry ice starts sublimating the moment it's made, so buying it close to when you need it gives you the most usable ice.
Dry ice releases carbon dioxide gas and requires proper ventilation. Handle only with insulated gloves, and never seal it in an airtight container.
Last reviewed: September 2026