What is the ozone depletion potential (ODP) value of R-441a?

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Prepare for the SkillCat EPA Type 2 Test with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations. Get ready to pass your exam!

Multiple Choice

What is the ozone depletion potential (ODP) value of R-441a?

Explanation:
ODP compares how much a substance can deplete stratospheric ozone relative to CFC-11 (set as 1). Substances that contain chlorine or bromine and release ozone-destroying radicals in the upper atmosphere have a nonzero ODP; those that do not contain these halogens or do not release such radicals have an ODP of 0. R-441a is a hydrofluorocarbon refrigerant blend that contains no chlorine or bromine, so it does not contribute to ozone depletion in the stratosphere. This is why its ozone depletion potential is zero. (ODP is separate from global warming potential.)

ODP compares how much a substance can deplete stratospheric ozone relative to CFC-11 (set as 1). Substances that contain chlorine or bromine and release ozone-destroying radicals in the upper atmosphere have a nonzero ODP; those that do not contain these halogens or do not release such radicals have an ODP of 0. R-441a is a hydrofluorocarbon refrigerant blend that contains no chlorine or bromine, so it does not contribute to ozone depletion in the stratosphere. This is why its ozone depletion potential is zero. (ODP is separate from global warming potential.)

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