2,7-Dichlorooxanthrene

Modify Date: 2025-08-24 17:03:28

2,7-Dichlorooxanthrene Structure
2,7-Dichlorooxanthrene structure
Common Name 2,7-Dichlorooxanthrene
CAS Number 33857-26-0 Molecular Weight 253.081
Density 1.5±0.1 g/cm3 Boiling Point 350.2±42.0 °C at 760 mmHg
Molecular Formula C12H6Cl2O2 Melting Point N/A
MSDS N/A Flash Point 140.2±28.0 °C

 Names

Name 2,7-Dichlorodibenzo-p-dioxin
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.5±0.1 g/cm3
Boiling Point 350.2±42.0 °C at 760 mmHg
Molecular Formula C12H6Cl2O2
Molecular Weight 253.081
Flash Point 140.2±28.0 °C
Exact Mass 251.974487
PSA 18.46000
LogP 5.82
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.643

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
HP3100000
CHEMICAL NAME :
Dibenzo-p-dioxin, 2,7-dichloro-
CAS REGISTRY NUMBER :
33857-26-0
BEILSTEIN REFERENCE NO. :
0017641
LAST UPDATED :
199806
DATA ITEMS CITED :
15
MOLECULAR FORMULA :
C12-H6-Cl2-O2
MOLECULAR WEIGHT :
253.08
WISWESSER LINE NOTATION :
T C666 BO IOJ EG LG

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
EVHPAZ EHP, Environmental Health Perspectives. (U.S. Government Printing Office, Supt of Documents, Washington, DC 20402) No.1- 1972- Volume(issue)/page/year: 5,87,1973 ** TUMORIGENIC DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
378 gm/kg/90W-C
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Liver - tumors Blood - leukemia
REFERENCE :
NCITR* National Cancer Institute Carcinogenesis Technical Report Series. (Bethesda, MD) No.0-205. For publisher information, see NTPTR*. Volume(issue)/page/year: NCI-TR-123,1979
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
756 gm/kg/90W-C
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Liver - tumors Blood - leukemia
REFERENCE :
NCITR* National Cancer Institute Carcinogenesis Technical Report Series. (Bethesda, MD) No.0-205. For publisher information, see NTPTR*. Volume(issue)/page/year: NCI-TR-123,1979 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
5 mg/kg
SEX/DURATION :
female 6-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - cardiovascular (circulatory) system
REFERENCE :
ADCSAJ Advances in Chemistry Series. (American Chemical Soc., Distribution Office Dept. 223, POB 57136, West End Stn., Washington, DC 20037) No.1- 1950- Volume(issue)/page/year: 120,70,1973 *** REVIEWS *** IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 15,41,1977 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 15,41,1977 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 69,33,1997 IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 69,33,1997 TOXICOLOGY REVIEW TXCYAC Toxicology. (Elsevier Scientific Pub. Ireland, Ltd., POB 85, Limerick, Ireland) V.1- 1973- Volume(issue)/page/year: 3,187,1975 TOXICOLOGY REVIEW RPZHAW Roczniki Panstwowego Zakladu Higieny. (Ars Polona, POB 1001, 00-068 Warsaw 1, Poland) V.1- 1950- Volume(issue)/page/year: 26,623,1975 TOXICOLOGY REVIEW MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 47,141,1978

 Safety Information

RIDADR UN 3077
HS Code 2932999060

 Synthetic Route

 Customs

HS Code 2932999060
Summary 2932999060. Dioxin,Furan(polychorinated dibenzo-p-dioxines,polychlorinated dibenzofurans). VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:89(articles on the list of prohibited export goods,articles on the list of prohibited import goods). MFN tariff:6.5%. General tariff:20.0%

 Synonyms

Dibenzo[b,e][1,4]dioxin, 2,7-dichloro-
DCDD
2,7-dichloro-p-dibenzodioxin
Dibenzo-p-dioxin,2,7-dichloro
2,7-dichlorobenzo-p-dioxin
2,7-Dichlorodibenzo-4-dioxin
2,7-Dichlorooxanthrene
2,7-dichlorobenzodioxin
2,7-Dichlorodibenzodioxin
2,5-DIMETHYL-THIOPHENE-3-CARBALDEHYDE
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