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|Section2= |Section7= |Section9= }} Tetrabromobisphenol A (TBBPA) is a brominated flame retardant. The compound is a colorless solid, although commercial samples appear yellowish. It is one of the most common fire retardants. == Production and use== TBBPA is produced by the reaction of bromine with bisphenol A. Most commercial TBBPA products consist of a mixture that differ in the degree of bromination with the formula C15H16-xBrxO2 where x = 1 to 4. Its fire-retarding properties correlate with %Br.The annual consumption in Europe has been estimated as 6.200 tons in 2004.〔Draft EU Risk Assessment of 2,2′,6,6′- TETRABROMO-4,4′-ISOPRYOPYLIDENE DIPHENOL, Final Environmental Draft of June 2007〕 TBBPA is mainly used as a reactive component of polymers, meaning that it is incorporated into the polymer backbone. It is used to prepare fire-resistant polycarbonates by replacing some bisphenol A. A lower grade of TBBPA is used to prepare epoxy resins, used in printed circuit boards.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetrabromobisphenol A」の詳細全文を読む スポンサード リンク
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