It is nonflammable, making it popular in professional or industrial applications because it can be sprayed on energized circuits. The negative of HFCa is its environmental impact. The trade-off is safety, since concentrated HFCa is flammable, so could light if exposed to an ignition source e. The risks are highest when spraying in an enclosed area, where vapors could collect, or if turning the can and expelling liquid.
HFOze trans- 1,3,3,3-Tetrafluoropropene, CAS — With the greater focus on global warming, new technology has become available for blowing off dust and dirt. Because it is newer technology that has not been widely adopted by larger volume applications like air conditioning, it is relatively expensive compared to the other alternatives.
As usage increases, and regulations force the issue, prices are expected to decrease. CO2 is very high pressure, so generally comes in small metal cartridges like used in air guns. These cartridges plug into a spray system, and are replaceable. For CO2, the spray force diminishes as the cartridge runs out, so the 1st half of the cartridge is more useful than the 2nd half. For the same price-sensitive reason, HFCa is commonly used in dusters available in consumer retail stores.
Concentrated HFCa is flammable, so could light if exposed to an ignition source e. This drives industrial users to more commonly spend the extra amount for nonflammable HFCa. Purity can be questionable — Industrial buyers rely on trusted industrial brands because the quality is closely controlled, especially when the duster is used on critical or sensitive electronics. Material used in commercial dusters are highly filtered, with moisture and other contamination minimized.
Bitterant added to prevent huffing — Retail dusters often contain bitterant to prevent huffing when dusters are accessible to children in the home.
To discourage huffing, a bitter agent is added to make the duster taste bad. Of course, these types of risks are not as high in an industrial environment, so concern turns to bitterant as a contamination on sensitive surfaces like electronic circuit boards. Retail duster can come in a variety of fill weights the content of the material in a can including 3.
The can size might be the same, so it is important to check the fill weight on the label. Are Nonflammable Aerosols Available? Since canned air has no moisture, added chemicals, or foreign particles, it is a safe and efficient method of cleaning such devices.
Computer technicians, photographers, and stereo enthusiasts have been using canned air for years to clear out accumulated dust from delicate areas. For instance, the insides of computers, especially around the fan, can build up so much dust that it begins to interfere with the cooling or functioning of circuitry. Particles cling to surfaces like lenses, film negatives, and enlargers but you can't use a cloth or feather-duster lest you scratch them. Electrical components can't be sprayed with anti-dust chemicals because they might damage the circuit or build up excess static electricity.
Canned air has been specifically designed to clean places that couldn't be cleaned with a vacuum, dust cloth, or ammonia -based spray cleaner.
Its contents contain absolutely no moisture, so it isn't dampening your printer, scanner, camera, eyeglasses, keyboard, monitor, or hard drive as it cleans. While it's true that the air only sprays the dust back into the air, where it may resettle, it has an advantage over vacuums since it doesn't create a static charge. You might be worried that if the atmosphere gets more polluted, we'll all be paying to live off of canned air.
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