Environmental Chemical Compound Research Writing Assignment Paper - 1

Environmental Chemical Compound Writing Assignment - Research Paper Example It is a non-corrosive, colourless gas2. At low concentrations it is odourless, but at very high concentrations it has an odour similar to that of ether3. It has a melting point of -157.7⠁ °C and a boiling point of -29.8⠁ °C4. It is soluble in water and many other organic solvents such as benzene and cyclohenxanone5. It has a molecular weight of 120.913 and does not burn in air6. It is normally compressed and stored as liquefied gas7. It has a vapour pressure of 4850 mmHg8. Because of the non-corrosive nature and very low boiling point of dichlorodifluoromethane, it was mainly used as a refrigerant in numerous home and industrial settings; it could not damage the mechanical components of the refrigerators. It was also used as an aerosol propellant in many pharmaceutical products such as Salbutamol and cosmetic sprays. Another use was in fire extinguishing systems, where it was used as a foaming agent. The chemical was also as an intermediate chemical in the production of other chemicals such as fluoropolymers9. Dichlorodifluoromethane was released into the environment during its production, transportation, storage and eventual use. Because of its high vapour pressure, any dichlorodifluoromethane that was released onto the ground quickly found its way into the atmosphere through volatilisation. Once in the atmosphere, the chemical accumulated in the troposphere. In this part of the atmosphere, the chemical was found to be very stable because it did not photodissociate at the wavelengths of light higher than 200 nm found in the troposphere. It accumulated in the troposphere and then spread around the world, and then diffused into the stratosphere after around thirty years. Once in the stratosphere, the chemical underwent photodissociation, influenced by the strong, short wavelength UV light10: These reactions contributed to the ozone destructions. The fact that a chlorine atom gets