Freons are now banned for used as air pollutants in a freshener and hair spray.What is the reason for tis ban?
150000
Why it is banned? coz it contains CFC. CFC reacts with ozone layer to form another substance. this reaction causes depletion on ozone layer. ozone layer screens any harmful rays from the sun from penetrating to the earth surface. with its depletion, we are at higher risk of getting skin cancer and many more deseases...
474088
use of deodorant = children\n\nbe happy that those that dont use it are not contributing to the population increase
978624
the ban was only on the silicone type implant..they were linking and causing alot of scar tissue and damage...that was back in the early nineties, and there have been many advances...now the silicone is in a gel form..like a gummy bear, and they have a had a lot of success with them in european trial..
596854
Hi,\n\nsulphur dioxide is added to foods as a preservative.\n\nIn the UK, and i think by extension the rest of the EU you now have to declare SO2 or similar as an ingredient if it's present at more than 10mg/kg as it can cause allergic reactions in some people.  A campaign group for hyperactive children wants to see it banned and it can bring on asthma attacks in some people (see previous answers).\n\nIt's been used since roman times quite safely so i don't think it's a big concern for 99% of us.
1020190
What you don't want clean air?  Cuz I'm SURE that each ten bucks goes directly purifying the air.  \n\nIt's just another tax to support a lame no authority government agency that was created to give some politician's nephew a job.
676013
The proper answer is with HEPA filters. Air purifiers are only as good as the engineering before the manufacturing process. Air conditioning has no viable way to eliminate the toxic contamination(hidden in odors). \n\nTo rid yourself from the damaging effects of toxic paint fumes, you will need to have MSAH filters in combination with HEPA. But, you will rid yourself of possible lung damage.
312779
Separating the Hydrogen and the Oxygen from regular water is a simple grade school physic's experiment. I have included a link to a experiment page. Now whether it is illegal in Great Briton, I do not know. Now why we don't use it, you would have to ask the major car manufactures that question. The technology is not new, there has been powerful fuel cells floating in outer space for almost 4 decades. The problem with hydrogen as a fuel, is that if it expands uncontrollably you will have one big explosion on your hands.
627752
Refrigerators from the late 1800s until 1929 used the toxic gases, ammonia (NH3), methyl chloride (CH3Cl), and sulfur dioxide (SO2), as refrigerants. Several fatal accidents occurred in the 1920s because of methyl chloride leakage from refrigerators. People started leaving their refrigerators in their backyards. A collaborative effort began between three American corporations, Frigidaire, General Motors and DuPont to search for a less dangerous method of refrigeration.\n\nTo some extent, CFC's have been replaced by the less damaging hydro-chloro-fluoro-carbons (HCFCs), although concerns remain regarding HCFCs also. In some applications, hydro-fluoro-carbons (HFCs) have been used to replace CFCs. HFC's, which contain no chlorine or bromine, do not contribute at all to ozone depletion although they are potent greenhouse gases. The best known of these compounds is probably HFC-134a (R-134a), which in the United States has largely replaced CFC-12 (R-12) in automobile air conditioners.\n\nIn 1928, Thomas Midgley, Jr. aided by Charles Franklin Kettering invented a "miracle compound" called Freon. Freon represents several different chlorofluorocarbons, or CFCs, which are used in commerce and industry. The CFCs are a group of aliphatic organic compounds containing the elements carbon and fluorine, and, in many cases, other halogens (especially chlorine) and hydrogen. Freons are colorless, odorless, nonflammable, noncorrosive gases or liquids.\n\nBecause Freon is non-toxic, it eliminated the danger posed by refrigerator leaks. In just a few years, compressor refrigerators using Freon would become the standard for almost all home kitchens. In 1930, Thomas Midgley held a demonstration of the physical properties of Freon for the American Chemical Society by inhaling a lung-full of the new wonder gas and breathing it out onto a candle flame, which was extinguished, thus showing the gas's non-toxicity and non-flammable properties. Only decades later did people realize that such chlorofluorocarbons endangered the ozone layer of the entire planet.\n\nSide Note: CFCs, or Freon, are now infamous for greatly adding to the depletion of the earth's ozone shield. Leaded gasoline is also a major pollutant, and Thomas Midgley secretly suffered from lead poisoning because of his invention, a fact he kept hidden from the public.
1132881
"These devices are marketed to reduce pollen and particulates in room air."\n\nBUT the consumer should be aware: \n\n"...a chemistry professor at the University of California at Irvine, noted that all “ionic” air purifiers emit some ozone.\n\nThey emit small amounts of ozone as a byproduct of this ionization process. The other machines, which employ ozonolysis, emit more ozone.\n\nIn a small and poorly ventilated room, the ozone adds to existing ozone and creates potentially unhealthy concentrations.\n\n"People operating air purifiers indoors are more prone to being exposed to ozone levels in excess of public health standards," Nizkorodov said."
452155
the antarctic ozone "hole" varies in size- currently by the best estimate I can find it is in the neighborhood of 7 million square miles- supposedly the CFC ban will help to "heal" the thing- but, a couple of catches to that-\n1. the Chinese still use CFC refrigerants, since CFC refrigerants can be "patented" there, assuring DuPont of continued profits on them.\n\n2. when I took my first refrigeration repair class over 30 years ago, the instructor warned us NEVER to vent a refrigeration system in a basement because the stuff was heavier than air and would displace air in the basement, suffocating you.\n\n Considering the warning that the stuff is heavier than air, and the fact that more change in the size of the hole occurs in conjunction with major volcanic activity than any other time, maybe the "change to safer refrigerants" was more about ensuring Major Corporate profits than about the "ozone hole"- check the patent information on "Freon" and "134a" refrigerants, and remember that "Freon" is heavier than air.\n\n Oh, and what is stated to "cause damage" to the ozone layer, is that "CFCs" break down under high level UV to release chlorine molecules which bond with ozone molecules, and then read about WW1- where they used chlorine gas as a weapon- because it was heavier than air and 'filled' trenches causing suffocation of the troops.\n\nif these chemicals are heavier than air, how are they getting up there?
1026448
change your filter then check freon level
418602
Too many chemicals in food chain and atmosphere. PEsticides, stress, later childbirth, teflon on cooking utensils, chenoble, fluoride, pension doubts, tv, microwaves, bad vides, mobile phones, life!
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
1004222
I believe it's cooled to prevent pre-detonation of the fuel/air charge in the cylinder. So, if you send the hot gasses back into the manifold without cooling, you'll get knocking in the engine.
84718
Bush has banned it because they get stem cells from aborted fetuses. However, there will always be abortion, legal or illegal. Why not use the cells.
285241
Did you just do a poopie? Get the air freshener.
854975
Could be it has been banned for a reason.