Cyclopentadiene

Suppliers

Names

[ CAS No. ]:
542-92-7

[ Name ]:
Cyclopentadiene

[Synonym ]:
cyclopentadienalpotassium
1,3-cyclopentadiene
Cyclopenta-1,3-diene
Potassium,2,4-cyclopentadien-1-yl
Cyclopentadienylpotassium
1,3-Cyclopentadiene,potassium complex
cyclopentanediene
cyclopentadienyl
POTASSIUM CYCLOPENTADIENIDE
EINECS 208-835-4
1,3-Cyclopentadiene
cyclopentdiene
EINECS 208-835-4

Chemical & Physical Properties

[ Density]:
0.9±0.1 g/cm3

[ Boiling Point ]:
41.5±0.0 °C at 760 mmHg

[ Melting Point ]:
-97.2ºC

[ Molecular Formula ]:
C5H6

[ Molecular Weight ]:
66.101

[ Flash Point ]:
-32.2±13.0 °C

[ Exact Mass ]:
66.046951

[ LogP ]:
1.79

[ Vapour Pressure ]:
418.5±0.0 mmHg at 25°C

[ Index of Refraction ]:
1.503

[ Stability ]:
Stable at room temperature. Incompatible with oxidizing agents, acids and a wide variety of other compounds. May form peroxides in storage. May undergo spontaneous polymerisation. Decomposes on heating. Highly flammable. Mixtures with air are explosive.

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
GY1000000
CHEMICAL NAME :
1,3-Cyclopentadiene
CAS REGISTRY NUMBER :
542-92-7
LAST UPDATED :
199712
DATA ITEMS CITED :
31
MOLECULAR FORMULA :
C5-H6
MOLECULAR WEIGHT :
66.11
WISWESSER LINE NOTATION :
L5 AHJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TPKVAL Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. (Izdatel'stvo Meditsina, Moscow, USSR) No.1- 1961- Volume(issue)/page/year: 9,27,1967
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
39 gm/m3
TOXIC EFFECTS :
Behavioral - excitement Behavioral - muscle contraction or spasticity Behavioral - aggression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 9(12),13,1965
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TPKVAL Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. (Izdatel'stvo Meditsina, Moscow, USSR) No.1- 1961- Volume(issue)/page/year: 9,27,1967
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
14 gm/m3
TOXIC EFFECTS :
Behavioral - excitement Behavioral - muscle contraction or spasticity Behavioral - aggression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 9(12),13,1965 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
350 mg/m3/4H/26W-I
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 9(12),13,1965 *** REVIEWS *** ACGIH TLV-TWA 203 mg/m3 (75 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 75 ppm (200 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,66,1971 OSHA PEL (Gen Indu):8H TWA 75 ppm (200 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 75 ppm (200 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 75 ppm (200 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 75 ppm (200 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-AUSTRIA:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-BELGIUM:TWA 75 ppm (203 mg/m3) JAN 1993 OEL-DENMARK:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-FINLAND:TWA 75 ppm (200 mg/m3);STEL 115 ppm (310 mg/m3) JAN 1993 OEL-FRANCE:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-GERMANY:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-HUNGARY:TWA 20 mg/m3;STEL 40 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 75 ppm (200 mg/m3) JAN 1993 OEL-RUSSIA:STEL 5 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 75 ppm (200 mg/m3) JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CYCLOPENTADIENE-air:10H TWA 75 ppm REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 20065 No. of Facilities: 3138 (estimated) No. of Industries: 19 No. of Occupations: 26 No. of Employees: 18381 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 20065 No. of Facilities: 3 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 51 (estimated)

Safety Information

[ RIDADR ]:
UN 1993

[ Packaging Group ]:
III

[ Hazard Class ]:
3.2

Synthetic Route

Precursor & DownStream

Precursor

  • 3a,4,7,7a-tetrahydro-1H-indene
  • Tricyclo[5.2.1.02,6]deca-3,8-diene
  • Cyclopentene
  • 5-trimethylsilylcyclopentadiene
  • N-[(S)-α-Methoxycarbonylbenzyl]-(1R,4S)-2-azabicyclo[2.2.1]hept-5-en
  • (2S)-methyl 2-((2S)-2-(2-azabicyclo[2.2.1]hept-5-en-2-yl)-3-phenylpropanamido)-4-methylpentanoate

DownStream

  • Azulene, 5,6-dimethyl-
  • 5-Norbornene-2-carboxylic acid, ethyl ester
  • 3,5,6,7-tetrahydroinden-4-one
  • N-BENZYL-2-AZANORBORNENE
  • 1,2,3,4-TETRAETHYL-1,3-CYCLOPENTADIENE
  • 3-(4-methylphenyl)sulfonyl-3-azabicyclo[2.2.1]hept-5-en-2-one
  • 5-NORBORNENE-2-BENZOYL
  • FLUCYBENE
  • Isopropylcyclopentane
  • 2-Azabicyclo[2.2.1]hept-5-en-3-one

Related Compounds

  • dicyclopentadiene
  • 1,2-Cyclopentadiene
  • 1,3-cyclopentadiene
  • ethylcyclopentadiene
  • butylcyclopentadiene
  • Cyanocyclopentadiene
  • 5-(4-Fluoro-2-methylphenyl)-1,3,4-thiadiazol-2-amine
  • 2,6,7,8-Tetrahydro-8-(2-methylphenyl)imidazo[2,1-c][1,2,4]triazine-3,4-dione
  • 4-(Difluorochloromethoxy)benzonitrile
  • Ethyl 4-hydroxy-5,6,7,8-tetrahydroquinoline-3-carboxylate
  • Methyl 2-(diethoxyphosphinyl)butanoate
  • Benzyl imino(methoxy)acetate
  • 2-Hydroxy-4-methylpyridine-3,5-dicarboxylic acid
  • 2-Hydroxy-2-[6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridin-3-yl]acetic acid
  • 1-(4-Bromo-phenyl)-4-isobutyl-piperazine
  • ethyl (R)-3-(4-benzyloxyphenyl)-2-hydroxypropionate
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