Dicofol

  • 4,4'-Dichloro-alpha-(trichloromethyl)benzhydrol
  • 2,2,2-Trichloro-1,1-bis(4-chlorophenyl)ethanol
Formula
C14H9Cl5O
Structure
Description
Kelthane is a white crystalline, wettable powder.
Uses
Acaricide.

Registry Numbers and Inventories.
CAS
115-32-2
EC (EINECS/ELINCS)
204-082-0
EC Index Number
603-044-00-4
EC Class
Harmful; Irritant; Sensitising; Dangerous for the Environment
RTECS
DC8400000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data
UN (DOT)
2761
Merck
12,3136
Beilstein/Gmelin
1886299
Beilstein Reference
4-06-00-04722
EPA OPP
10501
Swiss Giftliste 1
G-2324
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C14H9Cl5O
Formula mass
370.49
Melting point, °C
78.5 - 79.5
Boiling point, °C
455
Vapor pressure, mmHg
5E-9 (25 C)
Density
1.45 g/cm3 (25 C)
Solubility in water
Insoluble
pKa/pKb
10.70 (pKa)
Partition coefficient, pKow
4.28
Heat of vaporization
10.7 kJ/mol

Hazards and Protection.
Storage
Keep in well ventilated area.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Gloves for mixing, loading, or applying. Self contained breathing apparatus if exposed to vapors; rubber gloves, splash goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
Stable.
Incompatibilities
Corrosive to metals.
Decomposition
Dangerous when heated to decomposition. They evolve highly toxic hydrogen chloride fumes.

Fire.
Flash Point,°C
229
Autoignition, °C
530
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Nonflammable.
Combustion products
Irritating hydrogen chloride fumes may form in fire.

Health.
Poison_Class
4
Exposure effects
CNS excitation, seizures, tremor, ataxia, agitation, nervousness, and amnesia may occur. Kelthane, perthane, methoxychlor, and hexachlorobenzene have little CNS toxicity; in extreme overdose CNS depression may occur. Organochlorine pesticides such as DDT pass through the placenta, with an average level in the newborn blood reaching around a third of that in maternal blood. They can also be found in breast milk. Excessive absorption of kepone (chlordecone) has depressed sperm counts and sperm motility in exposed workers.
   Ingestion
Nausea, vomiting, and diarrhea may follow ingestion.
   Inhalation
Aspiration of insecticide containing petroleum distillate may result in pneumonitis.
   Skin
Extensive contact results in dermal irritation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2761
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
DTM
 
Std. Transport #
4966940