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What Is Dry Ice?
Dry ice is frozen carbon dioxide (C02), the gas we exhale as we breathe. It is much denser and colder than traditional ice. Dry Ice is -109.3º F (-78.5º C). Traditional ice is 32º F (0 degrees C). In addition, dry ice doesn't melt - it sublimates. Sublimation is the process of going directly from a solid to a gas. Dry ice bypasses the liquid form, giving it its name "dry" ice.
The first step in making dry ice is to turn the carbon dioxide gas into a liquid. This is done by compressing the C02 and removing any excess heat. The C02 will liquefy at a pressure of approximately 870 pounds per square inch. Next, the pressure is reduced over the liquid carbon dioxide by sending it through an expansion valve. Part of the liquid sublimates, causing the remainder to freeze into snow flakes. The dry ice snow is then compacted together under a large press to form blocks. Dry ice is much heavier than traditional ice, weighing about the same as standard bricks.
• Food Preservative - Shipping Medical Items
• Freezes Water Pipes For Emergency Plumbing Repairs
• Cooling (-109º F) - Solids, Sliced, Or Pellets
• Creating Fog For Special Effects
• Hunting, Camping, Fishing, And Insect Control
• Shrink Metal Parts, Lift Floor Tiles, Etc.
Pellets are especially useful in food processing and lab applications where small nuggets can be tightly packed around items of various shapes.
Dry ice blocks serve as excellent refrigeration for food processing and transportation applications.
Dry Ice And Its Uses
Dry ice removes almost twice as much heat per pound as water ice. It changes directly from a solid to a gas without becoming a liquid, thus, eliminating clean-up.
These features make dry ice especially useful in food preparation, packaging, and transport. By preventing heat build-up, it protects against salmonella growth. It prevents moisture build-up in mixing and water weight loss of product during shipment. In addition, its inert carbon dioxide gas is an excellent preservative and inhibits the growth of many forms of bacteria.
Other than food applications, dry ice is extremely valuable for flash freezing, pharmaceutical packing, absorbing ammonia, refrigeration leaks, and creating fog for the entertainment industry. As a coolant, its applications are unlimited.
DRY ICE WARNING!
Please Read Before Using
Extreme Cold (-109º F) May Cause Severe Cold Burns. Handle With Gloves. Avoid Contact With Skin And Eyes. Do Not Confine In Tightly Closed Containers. Do Not Enter Confined Areas Such As Walk-In Boxes Where Using Dry Ice Until Adequately Ventilated. Do Not Put In Drinks. Do Not Eat. Keep Out Of Reach Of Children And Animals.