DDT

  • 2,2-bis(p-Chlorophenyl)-1,1,1-trichloroethane
  • Dichlorodiphenyltrichloroethane
  • 1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane
  • Clofenotane
Formula
C14H9Cl5
Structure
Description
A colorless crystalline solid or white to off-white powder. Odorless to slightly aromatic.
Uses
Acaricide, insecticide.

Registry Numbers and Inventories.
CAS
50-29-3
EC (EINECS/ELINCS)
200-024-3
EC Index Number
602-045-00-7
EC Class
Toxic; Carcinogenic Category 3; Dangerous for the Environment
RTECS
KJ3325000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data
UN (DOT)
2761
Merck
12,2898
Beilstein/Gmelin
1882657
Beilstein Reference
4-05-00-01885
RCRA
U061
EPA OPP
29201
Swiss Giftliste 1
G-1529
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C14H9Cl5
Formula mass
354.49
Boiling point, °C
260
Vapor pressure, mmHg
0.0000002
Vapor density (air=1)
N/R
Odor Threshold Odor threshold odor low 5.0725 mg/m3
Density
1.5 g/cm3
Solubility in water
Insoluble
Refractive index
1.5795 (110 C)
Partition coefficient, pKow
6.91
Heat of vaporization
83.74 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
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Stable.
Incompatibilities
Incompatible with strong oxidizing and reducing agents Incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides Incompatible with alkaline media.
Decomposition
Decomposition at 110 C; dehydrochlorinates in alkali or organic bases when in organic solvents.

Fire.
Flash Point,°C
162-171
Fire fighting
Fire Extinguishing Agents: Water, foam, dry chemical, or carbon dioxide
Fire potential
Nonflammable.
Combustion products
Toxic and irritating gases may be generated Melts and burns

Health.
Exposure limit(s)
TLV: ppm; 1 mg/m3 (as TWA) (ACGIH 1993-1994). OSHA PEL: TWA 1 mg/m3 skin NIOSH REL: Ca TWA 0.5 mg/m3 See Appendix A NIOSH IDLH: Potential occupational carcinogen 500 mg/m3
Carcinogin
G-A3, I-2B, N-2, CP65
Poison_Class
3
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
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. MMEDIATELY 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. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
   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
DDT