1. It has been widely investigated for gas-generating systems, such as airbags and blowing agents. 2. The principal use of azodicarbonamide is in the production of foamed plastics as a blowing agent. 3. Manufacturing of EPP using melt processing with either chemical or physical blowing agents has been successful. 4. The HCFCs are transitional CFCs replacements, used as refrigerants, solvents, blowing agents for plastic foam manufacture, and fire extinguishers. 5. The refrigerator manufacturers say that HCFCs are only 10 percent as potent as CFCs, formerly used as blowing agents. 6. Sodium borohydride is used as a bleaching agent for wood pulp, and blowing agent for plastics, among other uses. 7. In the food industry, it has been used to aerosol spray propellant and as a blowing agent for polyurethane foams. 8. Mixed physical / chemical blowing agents e . g . used to produce flexible PU foams with very low densities. 9. Like other chlorinated hydrocarbons, chloroethane has been used as a aerosol spray propellant, an anesthetic, and a blowing agent for foam packaging. 10. Human-made chlorine compounds used in refrigerants, aerosol sprays, solvents, foam- blowing agents and bromine compounds used in firefighting halogens cause most ozone depletion.