• 1,2,3,4,10,10-Hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-endo-1,4-exo-5,8-dimethanonaphthalene
  • Alvit
  • HEOD
Formula C12H8Cl6O
Description Colorless crystals. Mild, chemical odor.
Uses Formerly as insecticide.

Registry Numbers and Inventories.
CAS 60-57-1
EC (EINECS/ELINCS) 200-484-5
EC Index Number 602-049-00-9
EC Class Very toxic; Toxic; Carcinogenic Category 3; Dangerous for the Environment
RTECS IO1750000
RTECS class Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data
UN (DOT) 2761
Merck 12,3152
Beilstein/Gmelin 91396
Beilstein Reference 5-17-02-00087
EPA OPP 45001
Swiss Giftliste 1 G-1543
Austrailia AICS Listed
Japan ENCS (MITI) Listed

Odor Threshold Odor threshold 0.041 ppm
Formula C12H8Cl6O
Formula mass 380.91
Melting point, C 174 - 175
Boiling point, C 385
Vapor pressure, mmHg 9E-7 (25 C)
Vapor density (air=1) 13.2
Density 1.75 g/cm3 (20 C)
Solubility in water Insoluble
Partition coefficient, pKow 5.40
Heat of vaporization 64.3 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 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. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash or cement powder. Water spill: Use natural barriers or oil spill control booms to limit spill travel. 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 Sensitive to mineral acids, acid catalysts, acid oxidizing agents and active metals Reacts with phenols Corrosive to metals May react vigorously with strong oxidizers such as chlorine and permanganates and strong acids such as sulfuric or nitric.
Decomposition When heated to decomposition, emits toxic fumes of hydrogen chloride.

Flash Point,C 155
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 Toxic and irritating hydrogen chloride fumes may form in fire.

Exposure limit(s) OSHA PEL: TWA 0.25 mg/m3 skin NIOSH REL: Ca TWA 0.25 mg/m3 skin See Appendix A NIOSH IDLH: Potential occupational carcinogen 50 mg/m3
Carcinogin CP65
Poison_Class 2
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. 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.

UN number 2761
Response guide 151
Hazard class 6.1
Packing Group I; II; III  
Std. Transport # 4921844