58200-70-7

Basic information

• Product Name: 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN
• Synonyms: 1,2,3,4,6,7,9-heptachlorodibenzodioxin;1,2,3,4,6,7,9-heptachlorodibenzo-para-dioxin;1,2,3,4,6,7,9-heptachloro-dibenzo-p-dioxi;Dibenzo-p-dioxin, 1,2,3,4,6,7,9-heptachloro-;HEPTACHLORODIBENZO-PARA-DIOXINS;1,2,3,4,6,7,9-HPCDD;1,2,3,4,6,7,9-CDD;1,2,3,4,6,7,9-Heptachlorodibenzo[1,4]dioxin
• CAS NO: 58200-70-7
• Molecular Formula: C₁₂HCl₇O₂
• Molecular Weight: 425.30614
• Mol File: 58200-70-7.mol
• Article Data: 16

Chemical Properties

• Melting Point: 265°C (estimate)
• Boiling Point: 506.1°C (rough estimate)
• Flash Point: 187.5°C
• Appearance: /
• Density: 1.8860 (estimate)
• Vapor Pressure: 1.34E-09mmHg at 25°C
• Refractive Index: 1.6710 (estimate)
• CAS DataBase Reference: 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN(58200-70-7)
• EPA Substance Registry System: 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN(58200-70-7)

Safety Data

• Hazardous Substances Data: 58200-70-7(Hazardous Substances Data)

Usage

General Description

White solid. Insoluble in water.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN may be sensitive to prolonged exposure to light.

Fire Hazard

Flash point data for 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN are not available. 1,2,3,4,6,7,9-HEPTACHLORODIBENZO-P-DIOXIN is probably combustible.

InChI:InChI=1/C12HCl7O2/c13-2-1-3(14)9-10(4(2)15)21-12-8(19)6(17)5(16)7(18)11(12)20-9/h1H

Upstream product

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• 39227-28-6 1,2,3,4,7,8-hexachlorodibenzodioxin 
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• 74-86-2 acetylene 

Relevant articles and documents

Effects of oxygen on formation of PCB and PCDD/F on extracted fly ash in the presence of carbon and cupric salt

The effect of oxygen-nitrogen atmosphere (N2 + 10%O2, N2 + 1%O2 and 99.999% N2) on the formation of PCB, PCDD and PCDF by the de novo synthetic reactions in the system consisting of extracted fly ash

The effect of oils on PAH, PCDD, PCDF, and PCB emissions from a spark engine fueled with leaded gasoline

The effect of synthetic and mineral oils on the formation of polyaromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and biphenyls (PCBs) in emissions from a spark ignition engine was studied on a Skoda Favorit engine fueled with leaded gasoline. The test cycle simulated urban traffic conditions on a chassis dynamometer, in accordance with the ECC 83.00 test. The data for selected PAHs as well as PCDDs, PCDFs, and PCBs congener profiles are presented. PCDD/Fs emissions for an unused oil and the oil after 10 000-km operation varied from 300 to 2000 fmol/m3, PCBs emissions from 75 to 178 pmol/m3, and PAHs emissions from 150 to 420 μg/m3. The content of PCBs in oils varied from 2 to 920 mg/kg.

Study of evolution of PCDD/F in sewage sludge-amended soils for land restoration purposes

The evolution of polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) in sewage sludge-amended soils used in the restoration of degraded lands, like quarries, has been studied. Two experiments were performed: one in the lab, under controlled conditions, and another in a quarry. Two different doses of sewage sludge were applied in both experiments (with two types of application in the quarry experiment) and the evolution of the amended soils were compared with that of the respective control soils (without addition of sewage sludge). The samples were analyzed with a previously validated method by HRGC-HRMS after the extraction and the necessary clean-up steps. The results reveal that polluted sewage sludge increases PCDD/F concentration in soils and that these compounds are persistent in the matrix after long periods of time. (C) 2000 Elsevier Science Ltd. The evolution of polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) in sewage sludge-amended soils used in the restoration of degraded lands, like quarries, has been studied. Two experiments were performed: one in the lab, under controlled conditions, and another in a quarry. Two different doses of sewage sludge were applied in both experiments (with two types of application in the quarry experiment) and the evolution of the amended soils were compared with that of the respective control soils (without addition of sewage sludge). The samples were analyzed with a previously validated method by HRGC-HRMS after the extraction and the necessary clean-up steps. The results reveal that polluted sewage sludge increases PCDD/F concentration in soils and that these compounds are persistent in the matrix after long periods of time. Laboratory and field experiments were conducted in Spain to examine the evolution of PCDDs and PCDFs in sewage-sludge-amended soils. The PCDD/F concentrations were measured in the original sewage sludge and in soil samples over time. Results from the laboratory showed that the PCDD/F concentration in amended soils was related directly to the sewage-sludge dose applied. After 1 yr, however, no evolution of PCDD/Fs was observed in any sample. In the field, high dispersion was observed, which did not allow establishment of a concentration trend over time. (from Eighteenth Symp on Halogenated Environ Organic Pollutants-Dioxin '98, Stockholm, Sweden (Aug 17-21, 98)).