《Determining sub-cooled liquid vapor pressures and octanol-air partition coefficients for chlorinated and brominated polycyclic aromatic hydrocarbons based on gas chromatographic retention times: Application for gas/particle partitioning in air》 was written by Vuong, Quang Tran; Thang, Phan Quang; Ohura, Takeshi; Choi, Sung-Deuk. SDS of cas: 523-27-3This research focused onvapor pressure octanol air partition coefficient PAH GCRT partitioning. The article conveys some information:
Halogenated polycyclic aromatic hydrocarbons (Halo-PAHs) are a new group of PAH derivatives and are reported to be more toxic than their parent PAHs. However, limited research has been undertaken on their physicochem. properties. In this study, subcooled liquid vapor pressures (PL) and octanol-air partition coefficients (KOA) of 24 chlorinated and 11 brominated PAHs (ClPAHs and BrPAHs) were determined using the gas chromatog. retention time (GC-RT) technique. The temperature dependences of PL and KOA for the Halo-PAHs were determined by the slopes and intercepts of the linear regressions. The GC-RT method also provided the enthalpies of vaporization (ΔHL) and internal energies of phase transfer (ΔUOA) for all interested compounds The activity of Halo-PAHs in octanol (γoct) ranging from 18 to 87, indicated the non-ideal solution behavior. The number of the chlorine atoms in the PAH rings could influence the interaction of ClPAHs with the organic matter, whereas this interaction for BrPAHs could not be studied due to the limited number of target BrPAHs. The measured values of PL and KOA were applied to investigate the gas/particle partition behaviors of Halo-PAHs in Ulsan, South Korea. This study is so far the first one to report the linear regression coefficients, which can be used to estimate the PL and KOA values of Halo-PAHs at any temperature The experimental part of the paper was very detailed, including the reaction process of 9,10-Dibromoanthracene(cas: 523-27-3SDS of cas: 523-27-3)
9,10-Dibromoanthracene(cas: 523-27-3) is a dibrominated polycyclic aromatic hydrocarbon (PAH). 9,10-Dibromoanthracene is often used as an energy acceptor and activator in reactions that produce chemiluminescence.SDS of cas: 523-27-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary