What is Dry Ice

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Dry Ice is Extremely Cold!

Dry ice basically is the expansion of liquid carbon dioxide in a mold that creates solid snow like pellets at a temperature of -109.3F  It’s the same gas that we exhale and plants use use for photosynthesis. It is useful for preserving frozen foods, ice cream, etc. It is also extremely effective and safe to use for all types of commercial and industrial cleaning. Many people ask us how to remove graffiti, clean concrete, restore the original brick in historic buildings? With the right equipment and know how, dry ice is the preferred choice. You may also like to visit this page for more information. http://mwdryice.com/whatisdryiceblasting/

When dry ice is placed in water. sublimation is accelerated, and low-sinking, dense clouds of smoke-like fog are created. This is used in fog machines, at theaters, haunted house attractions, and nightclubs for dramatic effects. Unlike most artificial fog machines, in which fog rises like smoke, fog from dry ice hovers above the ground. Dry ice is useful in theater productions that require dense fog effects.

Dry ice is the solid form of carbon dioxide (chemical formula CO2), comprising two oxygen atoms bonded to a single carbon atom. It is colorless, with a sour zesty odor, non-flammable, and slightly acidic.

At pressures below 5.13 atm and temperatures below −56.4 °C (−69.5 °F) (the triple point), CO2 changes from a solid to a gas with no intervening liquid form, through a process called sublimation.  The opposite process is called deposition, where CO2 changes from the gas to solid phase (dry ice). At atmospheric pressure, sublimation/deposition occurs at −78.5 °C (−109.3 °F).

The density of dry ice varies, but usually ranges between about 1.4 and 1.6 g/cm3 (87 and 100 lb/cu ft). The low temperature and direct sublimation to a gas makes dry ice an effective coolant, since it is colder than water dry ice forms and leaves no residue as it changes state.

Dry ice is non-polar, with a dipole moment of zero, so attractive intermolecular van der Waals forces operate. The composition results in low thermal and electrical conductivity.


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