Consider the following:AerosolsFoam agentsFire retardantsLubricantsIn the making of how many of the

Question

Consider the following:AerosolsFoam agentsFire retardantsLubricantsIn the making of how many of the above are hydrofluorocarbons used?

Accepted Answer

Hydrofluorocarbons (HFCs) are a group of industrial chemicals primarily used for cooling and refrigeration. HFCs are entirely man-made. They are primarily produced for use in refrigeration, air-conditioning, insulating foams and aerosol propellants, with minor uses as solvents and for fire protection. Also, synthetic lubricants are used in stationary HFC-based refrigeration equipment.HFCs were developed to replace stratospheric ozone-depleting substances that are currently being phased out under the Montreal Protocol on Substances that Deplete the Ozone Layer. Though HFCs currently represent around 1% of total greenhouse gases, their impact on global warming can be hundreds to thousands of times greater than that of carbon dioxide per unit of mass.The Kigali Amendment to phase down HFCs under the Montreal Protocol entered into force in 2019. Under the amendment, countries commit to cut the production and consumption of HFCs by more than 80% over the next 30 years. Hence, all the four options are correct.