149864-81-3 Usage
Description
1,2,3,8-Tetrachloronaphthalene is a chlorinated organic compound belonging to the naphthalene family. It is characterized by the presence of four chlorine atoms at positions 1, 2, 3, and 8 on the naphthalene molecule. 1,2,3,8-TETRACHLORONAPHTHALENE is known for its stability and resistance to degradation, which makes it a useful standard in various applications.
Uses
1. Used in Environmental Testing and Research:
1,2,3,8-Tetrachloronaphthalene is used as a standard for environmental testing and research to study the relative importance of polychlorinated naphthalenes compared to dioxins and polychlorinated biphenyls in human serum. This helps in understanding the potential health risks and environmental impact of these contaminants.
2. Used in Sediment and Biota Analysis:
1,2,3,8-Tetrachloronaphthalene is employed as a congener-specific determinant in the analysis of polychlorinated naphthalenes in sediment and biota samples. This is achieved through gas chromatography high-resolution mass spectrometry, which allows for the accurate identification and quantification of these contaminants in the environment.
Check Digit Verification of cas no
The CAS Registry Mumber 149864-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,8,6 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 149864-81:
(8*1)+(7*4)+(6*9)+(5*8)+(4*6)+(3*4)+(2*8)+(1*1)=183
183 % 10 = 3
So 149864-81-3 is a valid CAS Registry Number.
InChI:InChI=1/C10H4Cl4/c11-6-3-1-2-5-4-7(12)9(13)10(14)8(5)6/h1-4H
149864-81-3Relevant articles and documents
De novo synthesis mechanism of polychlorinated dibenzofurans from polycyclic aromatic hydrocarbons and the characteristic isomers of polychlorinated naphthalenes
Iino,Imagawa,Takeuchi,Sadakata
, p. 1038 - 1043 (2007/10/03)
Polychlorinated dibenzofurans (PCDFs) and polychlorinated naphthalenes (PCNs) are known to be emitted from municipal waste incinerators (MWIs) with polychlorinated dibenzo-p-dioxins (PCDDs). Two formation paths for PCDD/Fs could mainly work, which are condensation of the precursors such as chlorophenols and 'de novo' formation from carbon. However the correlation between the chemical structure of carbon and the resulting PCDD/Fs still remains unknown. In this study, the PCDD/Fs formation from polycyclic aromatic hydrocarbons (PAHs) and CuCl was examined at 400 under 10% O2. Coronene among the PAHs characteristically gave 1,2,8,9-T4CDF and the derivatives. These isomers clearly indicate that chlorination causes the cleavage of the C-C bonds in a coronene molecule and also that oxygen is easily incorporated from its outside to form 1,2,8,9-T4CDF. The symmetrical preformed structures in the coronene molecule enabled to amplify the de novo formation of the isomer. PCNs are also formed directly from these PAHs. Since there have been few reports on the formation mechanism of PCNs, this study will be a first step to know the whole formation paths. We also define the de novo synthesis as the breakdown reaction of a carbon matrix, since the word has been used without the precise definition.