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

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
• F: 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).