Home Categories Organic Chemistry Cyclopentene
A2286812

Cyclopentene , standardforGC,≥99.5%(GC) , 142-29-0

CAS NO.:142-29-0

Empirical Formula: C5H8

Molecular Weight: 68.12

MDL number: MFCD00001394

EINECS: 205-532-9

Update time: 2022-07-08

PRODUCT Properties

Melting point: −135 °C(lit.)
Boiling point: 44-46 °C(lit.)
Density  0.771 g/mL at 25 °C(lit.)
vapor pressure  20.89 psi ( 55 °C)
refractive index  n20/D 1.421(lit.)
Flash point: <−30 °F
storage temp.  0-6°C
solubility  water: soluble0.535g/L at 25°C
form  Liquid
color  Colorless
Specific Gravity 0.771
Water Solubility  immiscible
Sensitive  Air Sensitive
BRN  635707
Henry's Law Constant 6.3 x 10-2 atm?m3/mol at 25 °C (Hine and Mookerjee, 1975)
Stability: Stable. Highly flammable. Incompatible with strong oxidizing agents. Store cold.
InChIKey LPIQUOYDBNQMRZ-UHFFFAOYSA-N
LogP 2.47 at 25℃

Description and Uses

Cyclopentene is a cycloalkene that is cyclopentane having one endocyclic double bond. Vapors heavier than air. Inhalation of high concentrations may be narcotic. Used to make rubber and plastics. Neopentyl phosphine ligand catalyzed Heck coupling of cyclopentene has been reported. Mechanism of reaction of ground state oxygen atom with cyclopentene has been investigated. Homopolymerization of cyclopentene has been reported. Photocatalytic oxidation of cyclopentene over various titanium(IV) oxide catalyst has been reported. Cyclopentene was used to investigate the [2+2] cycloaddition of diamond (001) surfaces with alkene.

Safety

Symbol(GHS) 
GHS02,GHS07,GHS08
Signal word  Danger
Hazard statements  H225-H302+H312-H304-H315
Precautionary statements  P210-P233-P280-P301+P310-P303+P361+P353-P331
Hazard Codes  F,Xn
Risk Statements  11-21/22-36/37/38-65-67-52/53-38
Safety Statements  9-16-26-33-36-62-61-36/37
RIDADR  UN 2246 3/PG 2
WGK Germany  3
RTECS  GY5950000
10-23
Autoignition Temperature 743 °F
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29021990
Toxicity Acute oral LD50 for rats is 1,656 mg/kg (quoted, RTECS, 1985).

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