Chlouroflourocarbons,e.g., freons are now banned for use as air pollutants in air fresheners.why?
89886
Because freons can make large no. of free radicals by reacting with sunlight\nSo they irreversibly convert the Ozone of ozone layer into Oxygen\nThe ozone layer is important because it prevent us by UV rays from sun\nAnd freons can destroy it so it is a air pollutant
22212
Its bound into a CloroFloroCarbons used in the "Freons"\n\nThe Freons are special molicules that are realitivly safe (Unless your an Ozone layer) and have BOILING points below the temprature you want to achieve.  Basicly There is a pump inside a air conditioner that compresses the gas until it becomes liquid where it gives off its heat *feel the back side of an air conditioner* then it goes through a tiny little tube and boils inside the tubes on the front side of the air conditioner *the one on the back is called a condenser, the one on the Front is called a evaporator based on if the freon is condensing or evaporating in it*
644445
Many Organic compounds affected the environment,hydrocarbons , Oil and its derivatives , like gasoline. Flour anted Chloris carbon compounds like Freon affect the ozon layer.Pesticides affect the environment by its toxicity to humans and animals.Organophosphorous compounds are very toxic and used as ware fare agents.Most of organic compounds are carcinogenic when they used un properly.
61848
Freon is one of the chlorinated fluorocarbons, like the fire extinguisher Halon, and is a Dupont Chemical brand name. From what I have read, it appears that it might be very difficult to make Freon burn, because it is an inert gas and very nonreactive.
237061
Hey! I resent that answer above! It's something you should be concerned about, basically all the fumes people are emitting into the atmosphere (from factories, cars, etc.) are getting trapped in our atmosphere and heating the entire planet! This really shifts the balance of everything, there are many animals that can't live in the new heat they're not used to! If this keeps up, the earth will be smeltering!
250062
We use smoke bombs in hvac work all the time. For example inspections.Air leaks etc...
160714
Chlorofluorocarbons (CFC) are a group of simple alkanes (compounds of carbon and hydrogen) that also contain both chlorine and fluorine atoms.  They were widely used as propellant gases, dry cleaning solvents and refrigerants (Freon, and others).  As gases, these compounds often rise into the upper layers of the atmosphere where they react with sunlight to break down, releasing chlorine and fluorine atoms.  This process is called photodissociation.\nFree halogen atoms (such as chlorine and fluorine) react readily with ozone.  Their use over the last several decade has lead to a depletion in the ozone layer which protects our atmosphere from harmful UV radiation.  The international agreement called the Montreal Protocol is the reason that their use is prohibited.
955039
Reagents, since they usually come into contact with other atoms, are easily contaminated. Even by the air, which contains many sub particles and substances that are harmful when interacted with. If they are returned to their original container. Aren't the other atoms of the substance getting contaminated as well? Hence here, there seems to be the problem of contamination and wastage. Hope that helps dear!!!
1156992
That's nonsense. I've never heard of any restrictions like these - and I'm in the real estate business.\n\nRestrictions are only made for noise reasons - but that's only applicable to air conditions with ventilation leading outside - this type hardly exists here.\n\nGreetings from Switzerland
37496
If you want an educated opinion, bleach in any treatment plant creates toxins that are detrimental to bacteria, aerobic or otherwise. The problem comes from concentration. You'll hear the argument that there is so much water/waste and that the chlorine has disipated that it makes little difference at the plant. Aeration at the plant further releases the chlorine. The problem becomes minimal...depending upon your point of view. There is also an ongoing argument that chlorine mixed with with organic materials results in creating trihalomethanes which are carcinogenic. Its a mixed thing. You'll often see water downstream from a treatment plant actually cleaner than upstream. Doesn't mean it will support tons of productive life, but by clean water standards, it is actually cleaner.
32523
I will assume the refrigerant is Freon, with a boiling point of -40F. When the refrigerant condenses, as in goes from gas to liquid, it assumes a lower state of energy, therefore it must give off energy, in the form of heat, thus the air would increase in temperature. This occurs in the condensor of an air conditioner, the part that is OUTSIDE your house.\nInside your house, the refrigerant BOILS in an evaporator (at -40F) which requires heat INPUT, which is taken from the surrounding air, thus COOLING your house. These events combined are called a Carnot Cycle
429253
If it generates more than 70ppm, then according to the EPA it is unsafe.  Personally, if you can smell the ozone, then it's unsafe.  This means that it's producing at least 30ppm.
146462
Chloroflourocarbons (CFC's) were banned because it was discovered they were a large contributer to the depletion of the Earth's ozone layer.
29863
First the chemistry:\nAt high temperatures, halons decompose to release halogen atoms that combine readily with active hydrogen atoms, quenching the flame propagation reaction even when adequate fuel, oxygen and heat remains. The chemical reaction in a flame proceeds as a free radical chain reaction; by sequestering the radicals which propagate the reaction, halons are able to "poison" the fire at much lower concentrations than are required by fire suppressants using the more traditional methods of cooling, oxygen deprivation, or fuel dilution.\n\nSo according to this, freon "a halon" would act as an extinguisher, but also fluorine compounds could be the byproduct. This all depends on what is burning because the fluorine will combine into thousands of compounds. I wouldn't be any more concerned about the freon than any other houshold chemicals or plastics which can be very toxic.
888184
Because they require very exacting conditions for their disposal.  It's not like you can just throw them in a bag and toss them out.  A lot of times, burning them just creates more toxic material.
456961
CFCs aren't manufactured anymore, but tonnes of it still floats around in the atmosphere.  Since the CFCs causes chain reactions between ozone molecules.. even a lingering amount of CFCs will keep breaking down Ozone in the stratosphere.  Also, CFCs are still present in older models of refrigerators...and most likely people will not go through the hassle of extracting the CFCs before taking it to the dump.
489293
Good day! As far as I know CO2 or carbon dioxide does not destroy our atmosphere, as a matter of fact it's part of our atmosphere...The one that your telling that destroys our atmosphere is the CFC or Chlorofluorocarbon, that can be found in air fresheners, perfumes, air conditioners and refrigerators. And I read in a book that the destroyed part found in Australia can only be whole again if we pulverize all the seaweeds and distribute it up high(stratosphere). So, that's it, I hope I answered even a part of your question.