Purple is defined as a deep, rich shade between crimson and violet, or, more broadly, as a range of hues of color between blue and red, or as a dark color that is a blend of red and blue.
Dry ice is the solid form of carbon dioxide (CO2), a molecule consisting of a single carbon atom bonded to two oxygen atoms. Dry ice is colorless, non-flammable, with a sour zesty odor, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H2CO3).
Dry ice is considered hazardous three reasons: 1  dry ice releases a large volume of carbon dioxide gas as it sublimates. 2  If packaged in a container that does not allow for release of the gas, it may explode, causing personal injury or property damage.