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77-47-4

Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Hazard Information Material Safety Data Sheet(MSDS) Spectrum Detail Well-known Reagent Company Product Information

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Identification

Name
Hexachlorocyclopentadiene
CAS
77-47-4
Synonyms
CYCLOPENTADIENE HEXACHLORIDE
HEXACHLOROCYCLOPENTADIENE
PERCHLOROCYCLOPENTADIENE
1,2,3,4,5,5’-Hexachloro-1,3-cyclopentadiene
1,2,3,4,5,5-Hexachloro-1,3-Cyclopentadiene
1,2,3,4,5,5-hexachloro-3-cyclopentadiene
1,2,3,4,5,5-Hexachloro-cyclopenta-1,3-diene
1,3-Cyclopentadiene, hexachloro-
1,3-Cyclopentadiene,1,2,3,4,5,5’-Hexachloro-1,3-Cyclopentadiene
1,3-cyclopentadiene,1,2,3,4,5,5-hexachloro-
3-Cyclopentadiene,1,2,3,4,5,5-hexachloro-1
C 56
c-56
Cyclopentadiene, Hexachloro-
Graphlox
hccp
Hccpd
Hexachlorcyklopentadien
hexachlorcyklopentadien(czech)
Hexachloro-1,3-cyclopentadiene
EINECS(EC#)
201-029-3
Molecular Formula
C5Cl6
MDL Number
MFCD00001352
Molecular Weight
272.77
MOL File
77-47-4.mol

Chemical Properties

Description
Hexachlorocyclopentadiene is a pale-yellow/lemon-yellow liquid with a characteristic musty or pungent odour (odour threshold – 0.03 ppm). Hexachlorocyclopentadiene does not occur naturally but is a manufactured chemical. It easily evaporates into the air. Hexachlorocyclopentadiene is the key intermediate in the manufacture of some pesticides, including heptachlor, chlordane, aldrin, dieldrin, and endrin. Hexachlorocyclopentadiene is also used in the manufacture of flame retardants and some resins, shock-proof plastics, fluorocarbons, and dyes. Hexachlorocyclopentadiene quickly breaks down by sunlight and reacts with other chemicals in the air.
Appearance
pale yellow liquid
Appearance
Hexachlorocyclopentadiene is a pale-yellow to amber-colored, oily liquid. Pungent, unpleasant odor. The odor threshold is 0.15 0.33 ppm.
mp 
−10 °C(lit.)

bp 
239 °C753 mm Hg(lit.)

density 
1.702 g/mL at 25 °C(lit.)

vapor pressure 
0.13 psi ( 20 °C)

refractive index 
n20/D 1.5644(lit.)

Fp 
109 °C
storage temp. 
2-8°C
Stability:
Stability Stable, but light-sensitive. Non-flammable. Very reactive with alkenes and polynuclear hydrocarbons. Explosive with sodium. Incompatible with strong oxidizing agents, most common metals.
CAS DataBase Reference
77-47-4(CAS DataBase Reference)
NIST Chemistry Reference
1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-(77-47-4)
EPA Substance Registry System
77-47-4(EPA Substance)

Safety Data

Hazard Codes 
T+,N,T,F
Risk Statements 
R22:Harmful if swallowed.
R24:Toxic in contact with skin.
R26:Very Toxic by inhalation.
R34:Causes burns.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R11:Highly Flammable.
Safety Statements 
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S39:Wear eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S60:This material and/or its container must be disposed of as hazardous waste .
S53:Avoid exposure-obtain special instruction before use .
S25:Avoid contact with eyes .
S36/37:Wear suitable protective clothing and gloves .
S16:Keep away from sources of ignition-No smoking .
RIDADR 
UN 2646 6.1/PG 1

WGK Germany 
3

RTECS 
GY1225000


10-23
HazardClass 
6.1(a)
PackingGroup 
I
Hazardous Substances Data
77-47-4(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

General Description
A pale yellow liquid with a pungent odor. Density 14.3 lb /gal. Solidifies at 50°F. Insoluble in water. Noncombustible. Very toxic by skin absorption and inhalation. Corrosive to tissue.
Reactivity Profile
HEXACHLOROCYCLOPENTADIENE(77-47-4) is incompatible with strong oxidizing and reducing agents. Also incompatible with many amines, nitrides, azo/diazo compounds, alkali metals (sodium), and epoxides.
Air & Water Reactions
Insoluble in water. Reacts slowly with water to form hydrochloric acid.
Hazard
Toxic by ingestion, inhalation, and skin absorption. Questionable carcinogen.
Health Hazard
This compound is very toxic and may be fatal if inhaled, swallowed, or absorbed through the skin. The probable human lethal dose is 50-500 mg/kg, or between 1 teaspoon and 1 ounce for a 150 lb. (70 kg) person. Severe exposure induces pulmonary hyperemia and edema, degenerative and necrotic changes in brain, heart and adrenal glands and necrosis of liver and kidney tubules.
Potential Exposure
Hexachlorocyclopentadiene is used to produce the flame retardant chlorendic anhydride, which has applications in polyesters; and to produce chlorendic anhydride and chlorendic acid; which is used as a flame retardant in resins. Hexachlorocyclopentadiene is also used as an intermediate in the production of pesticides, such as aldrin, dieldrin, and endosulfan.
First aid
If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Speed in removing material from the skin is of extreme importance. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal pre cautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quanti ties of water and induce vomiting. Do not make an uncon scious person vomit. Keep victim quiet and maintain normal body temperature. Medical observation is recom mended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmo nary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.
Fire Hazard
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. Hazardous polymerization may not occur.
Shipping
UN2646 Hexachlorocyclopentadiene, Hazard Class: 6.1; Labels: 6.1-Poison Inhalation Hazard, Inhalation Hazard Zone B.
Incompatibilities
Reacts slowly with water to form hydro chloric acid; will corrode iron and most metals in presence of moisture. Explosive hydrogen gas may collect in enclosed spaces in the presence of moisture. Contact with sodium may be explosive.
Waste Disposal
Incineration after mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove the halo acids pro duced. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must con form to EPA regulations governing storage, transportation, treatment, and waste disposal.

Material Safety Data Sheet(MSDS)

Spectrum Detail

Well-known Reagent Company Product Information

Sigma Aldrich
77-47-4(sigmaaldrich)