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CAS No.: | 77-47-4 | |
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Name: | Perchlorocyclopentadiene | |
Article Data: | 46 | |
Molecular Structure: | ||
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: | ||
Risk Codes: | R22;R24;R26;R34;R50/53 | |
Transport Information: | UN 2646 |
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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-
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. | ||
EPA Extremely Hazardous Substances List. Community Right-To-Know List. Reported in EPA TSCA Inventory.
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:
OSHA PEL: TWA 0.01 ppm
ACGIH TLV: TWA 0.01 ppm; Not Classifiable as a Human Carcinogen
DOT Classification: 6.1; Label: Poison
For occupational chemical analysis use NIOSH: Hexachloro-1,3-cyclopentadiene, 2518.
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