A number that refers to the amount of ozone depletion caused by a substance. The ODP is the ratio of the impact on ozone of a chemical compared to the impact of a similar mass of CFC-11. Thus, the ODP of CFC-11 is defined to be 1.0. Other CFCs and HCFCs have ODPs that range from 0.016 to 1.0. The halons have ODPs ranging up to 10. HFCs have zero ODP because they do not contain chlorine.
a number that refers to the amount of ozone depletion caused by a substance. The ODP is the ratio of the impact on ozone of a chemical compared to the impact of a similar mass of CFC-11. The ODP of CFC-11 itself is defined to be 1.0. Other ozone-depleting substances have ODPs ranging from 0.02 to 10. Several classes of substitutes have zero ODP because they do not contain chlorine.
The integrated change in total ozone per unit mass emission of a specific compound, relative to the integrated change in the total ozone per unit mass of CFC-11.
ODP, is an indication of the potential a chemical, or groups of chemicals in a material, has on depleting the planets protective ozone layer. The higher the ODP the more damage the chemical does. Materials with zero ODP should be used.
A relative index indicating the extent to which a chemical product may cause ozone depletion. The reference level of 1 is the potential of CFC-11 and CFC-12 to cause ozone depletion. If a product has an ozone depletion potential of 0.5, a given weight of the product in the atmosphere would, in time, deplete half the ozone that the same weight of CFC-11 would deplete. The ozone depletion potentials are calculated with mathematical models that take into account factors such as the stability of the product, the rate of diffusion, the quantity of depleting atoms per molecule, and the effect of ultraviolet light and other radiation on the molecules.
a measure of the capacity of a particular chemical to destroy ozone. It is measured against a standard: CFC-11 (chlorofluorocarbon), which has an ozone depletion potential of 1.0.
The ozone depletion potential (ODP) of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane (R-11) being fixed at an ODP of 1.0. Chlorodifluoromethane (R-22), for example, has an ODP of 0.05.
