83704-27-2

Basic information

• Product Name: 1,3,4,6-tetrachlorodibenzofuran
• Synonyms: 1,3,4,6-TCDF
• CAS NO: 83704-27-2
• Molecular Formula: C12H4Cl4O
• Molecular Weight: 0
• Mol File: 83704-27-2.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 415.4°C at 760 mmHg
• Flash Point: 205.1°C
• Appearance: /
• Density: 1.625g/cm³
• Vapor Pressure: 9.93E-07mmHg at 25°C
• Refractive Index: 1.713
• CAS DataBase Reference: 1,3,4,6-tetrachlorodibenzofuran(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,4,6-tetrachlorodibenzofuran(83704-27-2)
• EPA Substance Registry System: 1,3,4,6-tetrachlorodibenzofuran(83704-27-2)

Safety Data

• Hazardous Substances Data: 83704-27-2(Hazardous Substances Data)

Usage

Family

Polychlorinated dibenzofurans (PCDFs)

Formation

By-product of industrial processes such as waste incineration and chemical manufacturing

Environmental impact

Known environmental contaminant

Health risks

Significant to humans and animals

Carcinogenicity

Potent carcinogen

Adverse health effects

Developmental and reproductive abnormalities, immune system disruption, endocrine disruption

Persistence

Highly persistent in the environment

Bioaccumulation

Ability to bioaccumulate in living organisms

Ecosystem and public health threat

Poses a serious threat

Control and reduction efforts

Ongoing

Regulatory measures

In place to limit production and release into the environment

InChI:InChI=1/C12H4Cl4O/c13-6-3-1-2-5-9-7(14)4-8(15)10(16)12(9)17-11(5)6/h1-4H

Upstream product

• 83704-36-3 1,3,4,6,7-pentachlorodibenzofuran 
• 55215-17-3 PCB 88 

Relevant articles and documents

Role of copper chloride in the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans during incineration

Combustion experiments in a laboratory-scale fluidized-bed reactor were performed to elucidate the role of copper chloride in formation of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) during model waste incineration. The amounts of PCDDs and PCDFs formed, the homologue profiles, and the isomer distributions were measured in the flue gas from incineration of model wastes containing various levels of copper. A correlation was found between the Cu content of the waste and the proportion of each congener. An increase in copper enhanced the formation of certain congeners, showing that copper acts as a catalyst for formation of PCDDs and PCDFs. An increase in the copper content of the waste decreased the CO concentration in the flue gas and reduced the formation of PCDDs and PCDFs during incineration. This indicates that copper also works as an oxidation catalyst to promote combustion, leading to lower concentrations of products of incomplete combustion. It is indispensable to consider both roles of the catalyst, i.e., enhancement and suppression, in the formation of PCDDs and PCDFs during waste incineration, which are estimated separately from the isomer distributions and the amounts of PCDDs and PCDFs formed.

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.