| Brominated Flame Retardant |
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Information AboutBrominated Flame Retardant |
Brominated flame retardants (BFRs) replaced PCB as the major chemical Flame Retardant in 1978 and are an effective flame-retardant. They are applied to prevent electronics, clothes and furniture from taking fire. Most brominated flame-retardants are considered Persistent Organic Pollutant s known to Bioaccumulate and their consequences are not well-known. Environmental consequences of the PBDE s can be found at the PDBE page. Brominated flame retardants (BFRs) is the designated name for a group of brominated organic substances that have an inhibitory effect on the ignition of combustible organic materials. BFRs are commonly used in electronic products as a means of reducing the flammability of the product. Bromine based flame retardants are applied to 2.5 million tons of polymers annually,with the annual consumption of PBDEs alone being in excess of 40,000 metric tons. North American industry used about 34,000 metric tons of PBDEs in 1999, making it the largest user of these additives globally; however, a significant proportion of the flame-retarded products manufactured in North America is destined for international markets. The electronics industry accounts for the greatest consumption of BFRs. In computers, BFRs are used in four main applications: in Printed Circuit Board s, in components such as Connector s, in plastic covers, and in Cable s. BFRs are also used in a multitude of products, including, but not exclusively, plastic covers of television sets, carpets, paints, upholstery, and domestic kitchen appliances. BFRs have such a widespread number of applications because they are incredibly effective at fire prevention. In addition to reducing the likelihood that an item will ignite, brominated flame retardants hinder the spread of the fire, and provide valuable extra time in the early stages of a fire when it is much easier to escape. A room fire can very quickly escalate to the point where enough heat is generated that all combustible material in the room bursts into flames. This situation is known as Flashover and can occur in a matter of minutes from ignition. Brominated flame retardants slow down the initial burn rate and thereby can help increase the time to flashover, giving the occupants more time to escape. Useful reading on (BFRs): Kyle D'Silva, Alwyn Fernandes and Martin Rose, 'Brominated Organic Micropollutants—Igniting the Flame Retardant Issue', Critical Reviews in Environmental Science and Technology, 34:141–207, 2004 Hexabromine Cyclodecane (HBCDD) is a ring consisting of ten Carbon atoms with six Bromine atoms tied to the ring. HBCDD is very poisonous to water-living Organism s and can cause harmful long-term effects in water environments. Humans can develop Allergy at skin contact. Tetra Bromine Bisphenol A (TBBP A) is regarded very poisonous to water-living organisms and very persistent. |
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