halogens


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halogens

The elements fluorine, chlorine, bromine, iodine, astatine.
References in periodicals archive ?
In this article the halogen bonding abilities of nitrobenzene along with halogens and different chlorofluorocarbons have been investigated theoretically at the B3LYP /6-31+G(d) method of DFT.
This helps them to use less energy andmakes them35%more efficient than traditional halogens.
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 symposium covered topics from limiting halogens found in laminate materials to halogen management throughout the supply chain.
Although lead-free PVC wire formulations are available today, many electronics companies are interested in other alternatives that are both lead-free and do not contain other halogens, such as chlorine--an integral component of PVC resin.
The environmentally clean formulation of Isodamp C-8002 is expected to be especially important to companies designing products for Japan and other applications where halogens and other substances are excluded, according to the company.
In nature, this element is always found in compounds of two or more elements, It most commonly hooks up with halogens (elements in Group 17 on the periodic table), When combined with chlorine, it forms the mineral halite.
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.