halogens


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halogens

The elements fluorine, chlorine, bromine, iodine, astatine.
References in periodicals archive ?
The technology is designed to enhance the disinfection properties of halogens at lower levels, and or be a cost effective alternative to halogens in many market niches where traditional disinfection methodologies are currently being employed.
Development of halogen-flee FR materials by RTP Company has been driven by the global push for manufacturers to eliminate halogens from their products," says Paul Killian, technical marketing manager of FR products.
To deal with this issue, the question of why halogens are a focal point must be addressed.
When compared to products containing halogens (such as PVC), these halogen-free cables offer considerable safety advantages.
The home's inviting lighting (mostly CFLs with some halogens and linear fluorescents) has won rave reviews, but it costs the owners only $90 a year compared to $290 a year for traditional lighting.
These products consist of halogens, bromine and/or chlorine.
Recent experiments have begun identifying oxidizing gases, such as ozone and molecules containing the halogens bromine and chlorine, as triggers for that mercury fallout.
Even in Europe, the regulatory climate for halogens is somewhat more relaxed.
Since it contains no halogens, there is no formation of harmful acids.
Still, I figured I'm not the only assembly engineer who has forgotten more than they remember about basic chemistry, so this month's lesson learned is more or less a gearhead's guide to halogens and halides, with a quick flashback to your high school chem class.
Cold Cathode Fluorescent Lamps (CCFLs), Compact Fluorescent Lamps (CFLs), High-Intensity Discharge (HID) lamps, Linear Fluorescent, Light Emitting Diodes (LEDs) and Halogens all compete complement one another within the $10 billion electronic ballast market.
Instead, two other issues are more important: acid corrosivity in smoke that results from halogenated flame retardants and can affect electrical systems; and smoke density that obscures vision, as smoke with halogens is much heavier than that with phosphorus-based materials.