Global InformationDichlorodiphenyldichloroethane information
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| Names | |
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| IUPAC name
1-chloro-4-[2,2-dichloro-
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| Preferred IUPAC name
1,1′-(2,2-dichloroethane-1,1-diyl)bis(4-chlorobenzene) | |
| Identifiers | |
CAS Number
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3D model (JSmol)
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| Abbreviations | DDD |
Beilstein Reference
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4-05-00-01884 |
| ChEBI |
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| ChEMBL |
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| ChemSpider |
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| ECHA InfoCard | 100.000.712 |
| EC Number |
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| KEGG |
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| MeSH | DDD |
PubChem CID
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| UNII |
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CompTox Dashboard (EPA)
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InChI
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SMILES
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| Properties | |
Chemical formula
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C14H10Cl4 |
| Molar mass | 320.03 g·mol−1 |
| Appearance | Colorless and crystalline |
| Density | 1.476 g/cm3 |
| Melting point | 109.5 °C (229.1 °F; 382.6 K) |
| Boiling point | 350 °C (662 °F; 623 K) |
Solubility in water
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0.09 mg/L |
| log P | 6.02 (octanol-water) |
| Vapor pressure | 1.35×10−6 mm Hg |
Henry's law
constant (kH) |
6.6×10−6 atm ∙ m3/mol |
Atmospheric OH rate constant
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4.34×10−12 cm3/molecule ∙ s |
| Related compounds | |
Related compounds
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DDE, DDT, mitotane, perthane |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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Dichlorodiphenyldichloroethane (DDD) is an organochlorine insecticide that is slightly irritating to the skin.[1] DDD is a metabolite of DDT.[2] DDD is colorless and crystalline;[3] it is closely related chemically and is similar in properties to DDT, but it is considered to be less toxic to animals than DDT.[4] The molecular formula for DDD is (ClC6H4)2CHCHCl2 or C14H10Cl4, whereas the formula for DDT is (ClC6H4)2CHCCl3 or C14H9Cl5.
DDD is in the “Group B2” classification, meaning that it is a probable human carcinogen. This is based on an increased incidence of lung tumors in male and female mice, liver tumors in male mice, and thyroid tumors in male rats. A further basis is that DDD is similar to and is a metabolite of DDT, another probable human carcinogen.[2]
DDD is no longer registered for agricultural use in the United States, but the general population continues to be exposed to it due to its long persistence time. The primary source of exposure is oral ingestion of food.[5]
1946 is the date of the earliest recorded use in English of the abbreviation “DDD” to stand for dichlorodiphenyldichloroethane, as far as could be determined.[3]
- ^ Merck Index, 11th ed, p482
- ^ a b “p,p'-Dichlorodiphenyl dichloroethane (DDD) (CASRN 72-54-8).” Integrated Risk Information System. 25 Jan. 2007. United States Environmental Protection Agency. 23 Apr. 2007 <http://www.epa.gov/iris/subst/0347.htm>.
- ^ a b Mish, Frederick C., Editor in Chief. “DDD.” Webster’s Ninth New Collegiate Dictionary. 9th ed. Springfield, MA: Merriam-Webster Inc., 1985.
- ^ Guralnik, David B., Editor in Chief. “DDD.” Webster’s New World Dictionary of the American Language. Second College Edition. New York, NY: Prentice Hall Press, 1986.
- ^ “DDD.” Hazardous Substances Data Bank. United States National Library of Medicine. 25 Apr. 2007 <http://toxmap.nlm.nih.gov/toxmap/main/chemPage.jsp?chem=4,4-DICHLORODIPHENYLDICHLOROETHANE Archived 2012-02-07 at the Wayback Machine then click “Env. Fate / Exposure”>.