The relative amount of degradation to the ozone layer a compound causes
This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations.(August 2020) (Learn how and when to remove this message)
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 or CFC-11) being fixed at an ODP of 1.0. Chlorodifluoromethane (R-22), for example, has an ODP of 0.05. CFC 11, or R-11 has the maximum potential amongst chlorocarbons because of the presence of three chlorine atoms in the molecule.
The first proposal of ODP came from Wuebbles in 1983. It was defined as a measure of destructive effects of a substance compared to a reference substance.[1]
Precisely, ODP of a given substance is defined as the ratio of global loss of ozone due to the given substance to the global loss of ozone due to CFC-11 of the same mass.
ODP can be estimated from the molecular structure of a given substance. Chlorofluorocarbons have ODPs roughly equal to 1. Brominated substances have usually higher ODPs in range 5–15, because of the more aggressive bromine reaction with ozone. Hydrochlorofluorocarbons have ODPs mostly in range 0.005 - 0.2 due to the presence of the hydrogen which causes them to react readily in the troposphere, therefore reducing their chance to reach the stratosphere where the ozone layer is present. Hydrofluorocarbons (HFC) have no chlorine content, so their ODP is essentially zero. ODP is often used in conjunction with a compound's global warming potential (GWP) as a measure of how environmentally detrimental it can be.
In a broad sense, haloalkanes that contain no hydrogen are stable in the troposphere and decompose only in the stratosphere. Those compounds that contain hydrogen also react with OH radicals and can therefore be decomposed in the troposphere, as well. The ozone depletion potential increases with the heavier halogens since the C-X bond strength is lower. Note the trend of the CClF2-X series in the table below.
^Ozone-Depletion and Chlorine-Loading Potential of Chlorofluorocarbon Alternatives
and 25 Related for: Ozone depletion potential information
The ozonedepletionpotential (ODP) of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane...
out the production of numerous substances that are responsible for ozonedepletion. It was agreed on 16 September 1987, and entered into force on 1 January...
Ozonedepletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's...
announced that the global depletion of the ozone layer may be slowing down because of the international regulation of ozone-depleting substances. In a study...
developed countries in 2020 due to the compound's ozonedepletionpotential (ODP) and high global warming potential (GWP), and in developing countries this process...
Ozonedepletion and climate change, or Ozone hole global warming in more popular terms, are environmental challenges whose connections have been explored...
a high ozonedepletionpotential, and long atmospheric lifetime. Only a few other greenhouse gases surpass CFC-13 in global warming potential (GWP).: 2 ...
Pentafluoroethane does not depleteozone so it has replaced earlier fluorinated chemicals that did. However while it has zero ozonedepletionpotential, it has high...
CO2. Gas dusters sold in many countries are ozone safe as they use "zero ODP" (zero ozonedepletionpotential) gases. For example, tetrafluoroethane has...
January 1996 under the Montreal Protocol because of its high ozonedepletionpotential and very long lifetime when released into the environment. CFC-115...
refrigerants are categorized as having zero ozonedepletionpotential (ODP) and low global warming potential (GWP) and so offer a more environmentally friendly...
Air Act to address stratospheric ozonedepletion. By 1987, in response to a dramatic seasonal depletion of the ozone layer over Antarctica, diplomats...
and their efficiency in contributing to stratospheric ozonedepletion (ozonedepletionpotential, ODP), and by making assumptions on transport times into...
lifetime in years Semi-empirical ozonedepletionpotential, ODP (normalized to be 1 for R-11) Net global warming potential, GWP, over a 100-year time horizon...
agents such as halon 1211 and 1301 were developed. Due to its ozonedepletionpotential its production was banned from January 1, 2002, at the Eleventh...
weight) – should be used. With a global warming potential (GWP) of 0.072 and an ozonedepletionpotential (ODP) of 0, R-290 is of very little threat to...
Lightning Nitrogen oxides Ozonedepletion, including the phenomenon known as the ozone hole. Ozone Monitor Ozone Monitoring Instrument Ozone therapy Ozoneweb Ozonide...
are typically evaluated on both their global warming potential (GWP) and ozonedepletionpotential (ODP). The GWP scale is standardized to carbon dioxide...
(that is, isobutane mixtures) have negligible ozonedepletionpotential and very low global warming potential (having a value of 3.3 times the GWP of carbon...
are especially harmful, because of their global warming potential and ozonedepletionpotential. Leaks of gases associated with industrial operations and...
higher ambient temperature to work. Prior to the knowledge of the ozonedepletionpotential of chlorine in refrigerants and other possible harmful effects...
implicated in thinning the ozone layer. A 2009 study suggested that N 2O emission was the single most important ozone-depleting emission and it was expected...
agent, avoiding the high global warming potential of CFCs, HCFCs and HFCs, as well as the ozonedepletionpotential of CFC and HCFCs. Extruded polystyrene...
Global Information