83704-34-1

Basic information

• Product Name: 1,2,8-trichlorodibenzo[b,d]furan
• Synonyms: 1,2,8-TRICHLORODIBENZOFURAN; Dibenzofuran, 1,2,8-trichloro; dibenzofuran, 1,2,8-trichloro-
• CAS NO: 83704-34-1
• Molecular Formula: C₁₂H₅Cl₃O
• Molecular Weight: 271.5265
• Mol File: 83704-34-1.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 389.6°C at 760 mmHg
• Flash Point: 189.4°C
• Density: 1.54g/cm³
• Vapor Pressure: 6.34E-06mmHg at 25°C
• Refractive Index: 1.71
• CAS DataBase Reference: 1,2,8-trichlorodibenzo[b,d]furan(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,8-trichlorodibenzo[b,d]furan(83704-34-1)
• EPA Substance Registry System: 1,2,8-trichlorodibenzo[b,d]furan(83704-34-1)

Safety Data

• Hazardous Substances Data: 83704-34-1(Hazardous Substances Data)

Upstream product

• 58802-20-3 1,2,7,8-tetrachlorodibenzofuran 
• 32598-11-1 2,5,3',4'-tetrachlorobiphenyl 
• 60145-21-3 2,2',4,5',6-pentachlorobiphenyl 
• 41464-39-5 2,2',3,5'-Tetrachlorobiphenyl 
• 37680-73-2 2,2',4,5,5'-Pentachlorobiphenyl 
• 87-86-5 Pentachlorophenol 
• 609-19-8 3,4,5-trichlorophenol 
• 95-77-2 3,4-dichlorophenol 
• 106-48-9 4-chloro-phenol 
• 58-90-2 2,3,4,6-tetrachlorophenol 
• 108-95-2 phenol 

Downstream Products

• 58802-20-3 1,2,7,8-tetrachlorodibenzofuran 
• 62615-08-1 1,2,3,8-tetrachlorodibenzofuran 
• 70648-22-5 1,2,8,9-Tetrachlorodibenzofuran 
• 64126-87-0 1,2,4,8-tetrachlorodibenzofuran 

Relevant articles and documents

Prediction of polychlorinated dibenzofuran congener distribution from gas-phase phenol condensation pathways

A model for predicting the distribution of dibenzofuran and polychlorinated dibenzofuran (PCDF) congeners from a distribution of phenols was developed. The model is based on a simplified chemical mechanism. Relative rate constants and reaction order with respect to phenol precursors were derived from experimental results using single phenols and equal molar mixtures of up to four phenols. For validation, experiments were performed at three temperatures using a distribution of phenol and 19 chlorinated phenols as measured in municipal waste incinerator exhaust gas. Comparison of experimental measurements and model predictions for PCDF isomer distributions and homologue pattern shows agreement within measurement uncertainty. The R-squared correlation coefficient exceeds 0.9 for all PCDF isomer distributions and the distribution of PCDF homologues. These results demonstrate that the distribution of dibenzofuran and the 135 PCDF congeners from gas-phase condensation of phenol and chlorinated phenols can be predicted from measurement of the distribution of phenol and the 19 chlorinated phenol congeners.

Synthesis of the 38 Tetrachlorodibenzofuran Isomers and Identification by Capillary Column Gas Chromatography/Mass Spectrometry

The 38 positional isomers of tetrachlorodibenzofuran have been synthesized by pyrolysis of specific polychlorinated biphenyl congeners, ultraviolet photolysis of pentachlorodibenzofurans, and chlorination of trichlorodibenzofurans by aromatic substitution.The specificity of these reactions in combinatiuon with capillary column gas chromatography with mass spectrometric detection has allowed each of these isomers to be identified based on their relative elution order.