1,2,3,4,5,5-Hexachlorocyclopenta-1,3-diene(77-47-4)
Product Identification
Product Name
1,2,3,4,5,5-Hexachlorocyclopenta-1,3-diene
Synonyms
1,2,3,4,5,5-Hexachloro-1,3-Cyclopentadiene
Graphlox
Hexachloro-1,3-cyclopentadiene
Perchlorocyclopentadiene
CAS
77-47-4
Formula
C5Cl6
Molecular Weight
272.75
EINECS
201-029-3
RTECS
GY1225000
RTECS Class
Agricultural Chemical and Pesticide; Tumorigen; Reproductive Effector; Primary Irritant
Beilstein/Gmelin
976722
Beilstein Reference
4-05-00-00381
EC Index Number
602-078-00-7
EC Class
Very toxic; Toxic; Harmful; Corrosive; Dangerous for the Environment
Physical and Chemical Properties
Appearance
A pale yellow liquid with a pungent odor.
Solubility in water
2 mg/L (Reacts)
Melting Point
12
Boiling Point
239
Vapor Pressure
0.052 (25 C)
Density
1.7105 g/cm3 (20 C)
Partition Coefficient
3.99
Heat Of Vaporization
46.0 kJ/mol
Usage
Intermediate for many insecticides, polyester resins, and flame retardants.
Vapor Density
9.4
Odor threshold
0.15 ppm
Refractive Index
1.5644 (20 C)
First Aid Measures
Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.
Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.
Handling and Storage
Storage
Tightly closed containers. Keep away from heat and water.
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.
Hazards Identification
Inhalation
The major target organ for c56 toxicity is the lung, regardless of the exposure route. Cough, dyspnea, and chest discomfort have been reported in exposed humans. Experimental animals have developed pulmonary edema, pulmonary hemorrhages, and necrotizing bronchitis and bronchiolitis.
Skin
Skin irritation may occur from direct contact or vapor exposure. Direct skin contact with the liquid can cause dermal blistering and burns.
Eyes
CONJUNCTIVITIS - Eye irritation is common. Irritation of the throat may be seen.
Ingestion
Nausea may occur.
Hazards
Toxic hydrogen chloride, chlorine, and phosgene gases may form in fires. In presence of moisture, will corrode iron and other materials; flammable and explosive hydrogen gas may collect in enclosed space. Will corrode iron and other metals in the presence of moisture. Reacts slowly with water to form hydrochloric acid; however, the reaction is not hazardous.
UN (DOT)
2646
Exposure Controls/Personal Protection
Personal Protection
Wear appropriate clothing to prevent any reasonable probability of skin contact. Wear eye protection to prevent any possibility of eye contact.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Exposure Effects
Headache is common. Degenerative CNS changes have been seen in experimental animals.
Exposure limit(s)
NIOSH REL: TWA 0.01 ppm (0.1 mg/m3)
Poison Class
2
Fire Fighting Measures
Flash Point
100
Fire Fighting
Isolate hazard area and deny entry. Wear positive pressure breathing apparatus and special protective clothing. Fight fire from maximum distance. Dike fire control water for later disposal.Use dry chemical, carbon dioxide, water spray or foam for small fires. For large fires, use water spray, fog, or foam. Move hexachlorocyclopentadiene from fire area if this can be done without risk.
Fire Potential
Nonflammable.
Accidental Release Measures
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. 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. Absorb bulk liquid with fly ash or cement powder. Water spill: Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability and Reactivity
Incompatibilities
Incompatible with strong oxidizing and reducing agents Incompatible with many amines, nitrides, azo/diazo compounds, alkali metals (sodium), and epoxides.
Stability
No data.
Combustion Products
Toxic hydrogen chloride, chlorine, and phosgene gases may form in fires.