Tetrabromodiphenyl ethers

The position number assignments in the table are for convenience and are arbitrarily fixed to the position numbering of 2,2, 4,4 -tetrabromodiphenyl ether. 

PBDEs are commercially available as three products penta-, octa-, and deca-BDE. All of these products are mixtures of several congeners. The compositions of these three products, as measured in our laboratory at Indiana University, are given in Table 4. The penta-product contains primarily 2,2/,4,4/-tetrabromodiphenyl ether (BDE-47), 2,2, 4,4, 5-pentabromodiphenyl ether (BDE-99), and 2,2, 4,4, 6-pentabromodiphcnyl ether (BDE-100) in a ratio of about 7 10 2. The octa-product contains primarily 2,2, 3,4,4, 5, 6-heptabromodiphenyl ether (BDE-183), 2,2, 3,3, 4,4, 5,6 -... 

Lema, S. C., Schultz, I. R., Scholz, N. L., Incardona, J. R, Swanson, R. (2007) Neural defects and cardiac arrhythmia in fish larvae following embryonic exposure to 2,2, 4,4 -tetrabromodiphenyl ether (RBDE 47). Aquat. Toxicol, 82 296-307. 

Tetrabromodiphenyl ether (BDE-47, CAS No. 40088-47-9) and 2,2, 4,4, 5-pentabromodiphenyl ether (BDE-99, CAS No. 32534-81-9) and other tetra- and pentabromodiphenyl ethers present in commercial pentab-romodiphenyl ether... 

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