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| CAS No.: | 77-47-4 | |
|---|---|---|
| Name: | Perchlorocyclopentadiene | |
| Article Data: | 46 | |
| Molecular Structure: | ||
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| Formula: | C5Cl6 | |
| Molecular Weight: | 272.773 | |
| Synonyms: | Cyclopentadiene,hexachloro- (7CI); 1,2,3,4,5,5-Hexachloro-1,3-cyclopentadiene;1,2,3,4,5,5-Hexachlorocyclopentadiene; C 56; Graphlox; HRS 1655;Hexachloro-1,3-cyclopentadiene; Hexachlorocyclopentadiene; NSC 9235;Perchlorocyclopentadiene | |
| EINECS: | 201-029-3 | |
| Density: | 1.702 | |
| Melting Point: | -10 C | |
| Boiling Point: | 239 C | |
| Flash Point: | 150 C | |
| Solubility: | soluble SOLVENT | clear to light yellow liquid |
| Hazard Symbols: |
 
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| Risk Codes: | R22;R24;R26;R34;R50/53 | |
| Transport Information: | UN 2646 | |
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Chemistry
Chemical Name: Hexachlorocyclopentadiene
IUPAC NAME: 1,2,3,4,5,5-hexachlorocyclopenta-1,3-diene
CAS No.: 77-47-4
EINECS: 201-029-3
RTECS: GY1225000
RTECS Class: Agricultural Chemical and Pesticide ; Tumorigen ; Reproductive Effector ; Primary Irritant
EC Class: Very toxic ; Toxic ; Harmful ; Corrosive ; Dangerous for the Environment
Molecular Formula: C5Cl6
Molecular Weight: 272.77 g/mol
Melting Point: -10 °C(lit.)
Density: 1.83 g/cm3
Flash Point: 100.2 °C
Boiling Point: 242.8 °C at 760 mmHg
Following is the structure of Hexachlorocyclopentadiene (77-47-4):
Product Categories about Hexachlorocyclopentadiene (77-47-4) are Pharmaceutical Intermediates ; Organics ; Method 612 ; 600 Series Wastewater Methods ; Alpha Sort ; E-LAlphabetic ; H ; HA -HTEPA ; Volatiles/ Semivolatiles ; 500 Series Drinking Water Methods ; Method 508
The chemical synonymous of Hexachlorocyclopentadiene (77-47-4) are Hexachlorocyclopentadiene ; Cyclopentadiene hexachloride ; 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-
Toxicity Data With Reference
| 1. | skn-mky 10 mg SEV | AMIHAB AMA Archives of Industrial Health. 11 (1955),459. | ||
| 2. | skn-rbt 500 mg/4H SEV | VELPB* Velsicol Chemical Corporation, Product Bulletin. (341 E. Ohio St., Chicago, IL 60611) 50101-2 ,1976. | ||
| 3. | eye-rbt 20 mg/24H MOD | 28ZPAK Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku Marhold, J.V.,Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha,Czechoslovakia.: 1972,30. | ||
| 4. | eye-rbt 100 mg/5M SEV | VELPB* Velsicol Chemical Corporation, Product Bulletin. (341 E. Ohio St., Chicago, IL 60611) 50101-2 ,1976. | ||
| 5. | skn-gpg 20 mg MLD | AMIHAB AMA Archives of Industrial Health. 11 (1955),459. | ||
| 6. | orl-rat LD50:1300 mg/kg | TSCAT* Office of Toxic Substances Report. (U.S. Environmental Protection Agency, Office of Toxics Substances, 401M Street SW, Washington, DC 20460) OTS0513386 . | ||
| 7. | ihl-rat LC50:1600 ppb/4H | JTEHD6 Journal of Toxicology and Environmental Health. 9 (1982),743. | ||
| 8. | orl-mus LD50:505 mg/kg | JAFCAU Journal of Agricultural and Food Chemistry. 23 (1975),967. | ||
| 9. | ihl-mus LCLo:1500 ppb/7H | TXAPA9 Toxicology and Applied Pharmacology. 53 (1980),497. | ||
Consensus Reports
EPA Extremely Hazardous Substances List. Community Right-To-Know List. Reported in EPA TSCA Inventory.
Safety Profile
A deadly poison by inhalation. Moderately toxic by ingestion and skin contact. Experimental teratogenic effects. Corrosive. A severe skin and eye irritant. May explode on contact with sodium. When heated to decomposition it emits toxic fumes of Cl−. See also CHLORINATED HYDROCARBONS, ALIPHATIC.
Analytical Methods:
Hazard Codes:
T+: Very toxic
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N: Dangerous for the environment
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T: Toxic
F: Flammable
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Risk Statements about Hexachlorocyclopentadiene (77-47-4):
R11 Highly flammable.
R22 Harmful if swallowed.
R24 Toxic in contact with skin.
R26 Very toxic by inhalation.
R23/24/25: Toxic by inhalation, in contact with skin and if swallowed.
R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R52/53: Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements about Hexachlorocyclopentadiene (77-47-4):
S16 Keep away from sources of ignition.
S23 Do not breathe vapour.
S25 Avoid contact with eyes.
S39 Wear eye / face protection.
S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S53 Avoid exposure - obtain special instructions before use.
S60 This material and its container must be disposed of as hazardous waste.
S61 Avoid release to the environment. Refer to special instructions / safety data sheets.
S36/37: Wear suitable protective clothing and gloves.
Attention:
1. Storage: Tightly closed containers. Keep away from heat and water.
2. 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.
Standards and Recommendations
OSHA PEL: TWA 0.01 ppm
ACGIH TLV: TWA 0.01 ppm; Not Classifiable as a Human Carcinogen
DOT Classification: 6.1; Label: Poison
Analytical Methods
For occupational chemical analysis use NIOSH: Hexachloro-1,3-cyclopentadiene, 2518.
Specification
Hexachlorocyclopentadiene (77-47-4) is an organochlorine compound that is a precursor to several pesticides. This colourless liquid is an inexpensive reactive diene. Many of its derivatives proved to be highly controversial, as studies showed them to be persistent organic pollutants. Collectively, the pesticides derived from hexachlorocyclopentadiene are called the cyclodienes. An estimated 2.7 x 105 tons were produced until 1976, and some are still manufactured.It mainly used for making organochlorine pesticides, adenauer's agent, highway, LvDan and flame retardant plastics. It is prepared by chlorination of cyclopentadiene to give 1,1,2,3,4,5-octachlorocyclopentane, which in a second step undergoes dehydrochlorination:
C5H6 + 6 Cl2 → C5H2Cl8 + 4 HCl
C5H2Cl8 → C5Cl6 + 2 HCl