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Chemical Properties

CAS Registry Number: 115-32-2

Selected information from two of the National Library of Medicine's databases: ChemIDPlus2 and HSDB3.

Names 1

  • 4-Chloro-Alpha-(4-Chlorophenyl)-Alpha-(Trichloromethyl)Benzenemethanol
  • Dicofol
  • Dicofol, P,P
  • Kelthane

Structure

Chemical Structure for Chemical Abstracts Service Registry Number 115-32-2 from NLM

Synonyms (Sources: NTP,HSDB,RTECS,MESH)2

  • 1,1,1-Trichlor-2,2-bis(4-chlorphenyl)-aethanol [German]
  • 1,1-Bis(4-chlorophenyl)-2,2,2-trichloroethanol
  • 1,1-Bis(p-chlorophenyl)-2,2,2-trichloroethanol
  • 2,2,2-Trichloor-1,1-bis(4-chloor-fenyl)-ethanol [Dutch]
  • 2,2,2-Trichlor-1,1-bis(4-chlor-phenyl)-aethanol [German]
  • 2,2,2-Trichloro-1,1-bis(4-chlorophenyl)-ethanol [French]
  • 2,2,2-Trichloro-1,1-bis(4-chlorophenyl)ethanol
  • 2,2,2-Trichloro-1,1-bis(4-cloro-fenil)-etanolo [Italian]
  • 2,2,2-Trichloro-1,1-bis(p-chlorophenyl)ethanol
  • 2,2,2-Trichloro-1,1-di-(4-chlorophenyl)ethanol
  • 4,4'-Dichloro-alpha-(trichloromethyl)benzhydrol
  • 4-06-00-04722 (Beilstein Handbook Reference)
  • 4-Chloro-alpha-(4-chlorophenyl)-alpha-(trichloromethyl)benzenemethanol
  • 4-Chloro-alpha-(4-chlorophenyl)-alpha-(trichloromethyl)benzyl alcohol
  • Acarin
  • BRN 1886299
  • Benzenemethanol, 4-chloro-alpha-(4-chlorophenyl)-alpha-(trichloromethyl)-
  • Benzhydrol, 4,4'-dichloro-alpha-(trichloromethyl)-
  • CPCA
  • Carbax
  • Cekudifol
  • DTMC
  • Di-(p-chlorophenyl)trichloromethylcarbinol
  • Dichlorokelthane
  • Dicofol
  • Dicomite
  • ENT 23,648
  • Ethanol, 2,2,2-trichloro-1,1-bis(p-chlorophenyl)-
  • FW 293
  • HSDB 631
  • Hilfol
  • Hilfol 18.5 EC
  • Keltane
  • Kelthane
  • Kelthane A
  • Kelthane dust base
  • Kelthanethanol
  • Milbol
  • Mitigan
  • NCI-C00486
  • para,para'-Kelthane

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Other Registry Numbers2

  • None Found

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Chemical Properties3

Property Description
Boiling Point
  • 180 deg C at 0.1 mm Hg
Color/Form
  • Colorless solid
  • Crystals from petroleum ether
Corrosivity
  • Slightly corrosive to metals
Critical Temperature & Pressure
  • None Found
Density/Specific Gravity
  • Specific gravity: 1.130 at 20 deg C
Dissociation Constants
  • None Found
Heat Of Combustion
  • None Found
Heat Of Vaporization
  • 1.07 J/kmole at 25 deg C.
Melting Point
  • 77.5 deg C
Molecular Weight
  • 370.49
Odor
  • Liquid has odor of the solvent (xylene)
  • Solids have slight characteristic odor
Other Chemical/Physical Properties
  • Amber emulsion (41.1%). Wt/gallon at 20 deg C = 9.4
  • Brown viscous oil; 95% pure, composed of 80% dicofol and 20% its 1-(2-chlorophenyl)-1-(4- chlorophenyl)-isomer('o,p'-dicofol'). BP: 193 deg C at 370 mm Hg. VP: 0.053 mPa at 25 deg C. Density: 1.45 at 25 deg C. /Technical grade/
  • Henry's Law constant = 2.4X10-7 atm-cu m/mol at 25 deg C (est)
  • Hydroxyl radical reaction rate constant = 3.4X10-12 cu cm/molec-sec at 25 deg C (est)
Relative Evaporation Rate
  • None Found
Solubilities
  • 400 g/L in acetone, ethyl acetate and toluene at 25 deg C. 36 g/L in methanol at 25 deg C. 30 g/L in hexane and isopropanol at 25 deg C
  • In water, 0.8 mg/L at 25 deg C
  • In water, 1.2 mg/L at 24 deg C (99% purity)
Spectral Properties
  • Intense mass spectral peaks: 138 M/z (100%), 111 M/z (36%), 141 M/z (29%), 250 M/z (27%)
  • MASS: 42369 (NIST/EPA/MSDC Mass Spectral Database, 1990 version)
  • UV Max absorption (ethanol): 226, 258, 266, 276 nm (log epsilon = 4.43, 2.82, 2.85, 2.60, respectively)
Surface Tension
  • None Found
Taste
  • None Found
Vapor Density
  • None Found
Vapor Pressure
  • 3.98X10-7 mm Hg at 25 deg C (technical)
Viscosity
  • None Found
log P (octanol-water)
  • log Kow = 5.02
pH
  • None Found

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Uses3

  • Acaricide **PEER REVIEWED**
  • Control of many species of mite on a wide range of crops, incl fruit, vines, ornamentals, vegetables, and field crops; in or around agricultural and domestic buildings for mite control. **PEER REVIEWED**
  • For dicofol (USEPA/OPP PC Code: 010501) Active products with label matches. /SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./ **PEER REVIEWED**
  • Mites on field crops, fruits, vegetables, and ornamentals. **PEER REVIEWED**
  • Pesticide type: insecticide (acaricide) **PEER REVIEWED**

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Notes (Sources: NTP,HSDB,RTECS,MESH)2

  • An organochlorine insecticide.

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Superlist Classes2

  • 2007 CERCLA Priority List, Rank: 144
  • 2011 CERCLA Priority List, Rank: 145
  • Overall Carcinogenic Evaluation: Group 3
  • Reportable Quantity (RQ) = 10 lb

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Links to Additional Information2

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Footnotes

1 Source: the NTP's CEBS database.

2 Source: the National Library of Medicine's ChemIDPlus, 02/28/2017.

3 Source: the National Library of Medicine's Hazardous Substance Database, 02/28/2017.

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