What is the ozone depletion potential (ODP) value of R-600a?

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Multiple Choice

What is the ozone depletion potential (ODP) value of R-600a?

ODP measures how much a substance can deplete the ozone layer, relative to a reference like CFC-11. Substances that release chlorine or bromine in the stratosphere drive ozone destruction, while hydrocarbons without halogens do not. R-600a is isobutane, a simple hydrocarbon with only hydrogen and carbon, so it contains no chlorine or bromine and does not contribute to ozone depletion. That’s why its ozone depletion potential is zero. (Note: ODP is different from global warming potential, which is about climate impact rather than ozone.)

ODP measures how much a substance can deplete the ozone layer, relative to a reference like CFC-11. Substances that release chlorine or bromine in the stratosphere drive ozone destruction, while hydrocarbons without halogens do not. R-600a is isobutane, a simple hydrocarbon with only hydrogen and carbon, so it contains no chlorine or bromine and does not contribute to ozone depletion. That’s why its ozone depletion potential is zero. (Note: ODP is different from global warming potential, which is about climate impact rather than ozone.)

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