Dry ice is carbon dioxide. Dry ice is called this name because it is the snow that turns from solid to gaseous directly without melting. It is compressed carbon dioxide, and carbon dioxide is a natural part of the Earth’s atmosphere. Is the gas we emit during breathing in exhalation and the gas used by plants in photosynthesis. Dry ice is the common name for the carbon dioxide solid model. Originally a long-term brand of carbon dioxide produced by Prest Air Appliances Long Island in 1925, with the passage of time now it refers to any carbon dioxide.
Usually dry ice is particularly useful for freezing, keeping things frozen because of its very cold temperature as high as – 78.5 degrees Fahrenheit or degrees Celsius. Dry ice is widely used because it is simple to freeze and easy to handle with the use of insulating gloves because dry ice itself is not a toxic substance but the surface of the cold solid can not be tolerated. Dry ice is primarily made in two forms, either in the shape of a block of dry ice weighing more than 50 lbs, equivalent to 22 kg, or made in the form of small pieces, varying in size from the size of the rice grain to pieces similar to ice balls or according to the approved specifications. Dry ice is manufactured and formed by pressure of carbon dioxide. Dry ice production plants are usually close to oil refineries where carbon dioxide is transported. The liquid moves from high pressure pipes to normal atmospheric pressure. As a result, it expands and evaporates at high speed Cooled to a freezing point of -109 degrees Fahrenheit where it is kept in tubes to be formed later according to the company’s specifications.
In the process of storage of dry ice is not stored in the refrigerator in the kitchen because the heat in the freezer will close the refrigerator due to cold ice from dry ice. Dry ice is used to freeze and save perishable materials, especially in food, because the dry ice cooler is three times the cooling capacity of the whole H2O. Cooling is important for keeping cold foods and preventing growth of bacteria during shipment. Dry ice is used to cool and protect food or food which must be very clean in its packaging and maintain its shape until it reaches the place to be transported without causing any defects in the form and thus enrich when sending food samples or parcels on the use of refrigeration containers. Transfer as it is known to dissolve the water that reaches the degree of ice, so that possible dirt on the packages of food samples or corruption occurs in the package due to different temperature. Other food-related uses help to delay the growth of active yeast used in bakery and pastry shops, It is used to slow the growth of flower buds in nurseries to keep the plants fresh to consumers, used as a freeze in the rubber industry during the manufacturing process, and a gas conversion feature that has been successfully used to create smoke in theater. Another important application of dry ice is the cleaning of buildings from the outside and the surfaces through the process of throwing snow balls dry on the surface to clean them at high speed as it evaporates in the atmosphere leaving only the dirt or paint to be disposed of.