39227-54-8

Basic information

• Product Name: 2-CHLORODIBENZO-P-DIOXIN
• Synonyms: 2-chlorodibenzo-4-dioxin;2-Chlorodibenzo-para-dioxin;2-chloro-dibenzo-p-dioxi;2-Chlorooxanthrene;Dibenzo[b,e][1,4]dioxin, 2-chloro-;Dibenzo-p-dioxin, 2-chloro-;e)(1,4)dioxin,2-chloro-dibenzo(;2-CHLORODIBENZO-P-DIOXIN (50 UG/ML IN ISOOCTANE)
• CAS NO: 39227-54-8
• Molecular Formula: C₁₂H₇ClO₂
• Molecular Weight: 218.63578
• Mol File: 39227-54-8.mol
• Article Data: 5

Chemical Properties

• Melting Point: 88.85°C
• Boiling Point: 283.66°C (rough estimate)
• Flash Point: 133.9°C
• Appearance: /
• Density: 1.3660 (estimate)
• Vapor Pressure: 0.000821mmHg at 25°C
• Refractive Index: 1.6340 (estimate)
• Water Solubility: 298ug/L(25 oC)
• CAS DataBase Reference: 2-CHLORODIBENZO-P-DIOXIN(CAS DataBase Reference)
• NIST Chemistry Reference: 2-CHLORODIBENZO-P-DIOXIN(39227-54-8)
• EPA Substance Registry System: 2-CHLORODIBENZO-P-DIOXIN(39227-54-8)

Safety Data

• RIDADR: 3077
• HazardClass: 9
• PackingGroup: I
• Hazardous Substances Data: 39227-54-8(Hazardous Substances Data)

Usage

Uses

2-Chlorodibenzo-p-dioxin is a standard used in environmental testing and research such as the formation ofdibenzofurans/dibenzodioxins from waste incinerators.

InChI:InChI=1/C12H7ClO2/c13-8-5-6-11-12(7-8)15-10-4-2-1-3-9(10)14-11/h1-7H

Upstream product

• 262-12-4 dioxin 
• 29446-15-9 2,3-dichloro-dibenzo[1,4]dioxine 
• 33857-26-0 2,7-dichloro-dibenzo[1,4]dioxine 

Downstream Products

• 262-12-4 dioxin 
• 17054-75-0 dibenzo<1,4>dioxin-2-carboxylic acid 
• 131167-12-9 2,3,7-tribromo-8-chlorodibenzo-p-dioxin 

Relevant articles and documents

Photochemical rearrangement of chlorinated dibenzo-p-dioxins. Regioselective carbon-oxygen bond homolysis from the singlet excited state, and carbon-chlorine bond homolysis from the triplet excited state

UV light irradiation of 1-chloro-, 2-chloro-, 1,2-dichloro-, 2,3-dichloro-, and 2,7-dichlorodibenzo-p-dioxin in methanol leads to regioselective homolysis of carbon-oxygen bond from the singlet excited state to undergo rearrangement into chlorinated 2,2′-biphenols. On the contrary, reaction from the triplet excited state of chlorinated dioxins results in selective formation of dechlorinated congeners without altering the dioxin skeleton. Copyright

Mono- to tri-chlorinated dibenzodioxin (CDD) and dibenzofuran (CDF) congeners/homologues as indicators of CDD and CDF emissions from municipal waste and waste/coal combustion

Total homologue concentrations and select congener concentrations from amongst the mono- to tri-chlorinated dibenzodioxins (CDDs) and dibenzofurans (CDFs) are used to model both Total (mono- to octa-) CDD + CDF emissions and the toxicity equivalent (TEQ) of the 2,3,7,8-chlorine-substituted emissions. Analysis of emission data from two facilities indicates that use of total homologue concentrations shows limited, facility-specific correlations with Total CDDs/CDFs and TEQ. Concentrations of select mono- to tri-CDD/CDF congeners show promising correlation with CDD/CDF TEQ across facilities, suggesting that these compounds can act as TEQ indicators. (C) 2000 Elsevier Science Ltd.

Synthesis of mixed halogenated dibenzodioxins (X = Br, Cl)

The conversion of dibenzodioxin with CuCl2x2H2O and CuBr2 results in polyhalogenated dibenzodioxins. Besides the chlorinated compounds, bromination stages 1 to 5 are obtained at chlorination levels of 0 to 7 for monobromo-, 0 to 7 for dibromo-, 0 to 4 for tribromo-, 0 to 3 for tetrabromo-, and 0 to 1 for pentabromodibenzodioxin. The 2,3,7,8 position is halogenated preferentially.