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Cyclopentene

Cyclopentene Suppliers list
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-55531817
Email: info@dakenchem.com
Products Intro: Product Name:Cyclopentene
CAS:142-29-0
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Email: info@tianfuchem.com
Products Intro: CAS:142-29-0
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Email: sales@mainchem.com
Products Intro: Product Name:Cyclopentene
CAS:142-29-0
Company Name: Shanghai Gonghe Chemical Co., Ltd  Gold
Tel: +86-21-56733000
Email: sales@gonghechem.com
Products Intro: Product Name:Cyclopentene
Purity:99%,(GC)
Company Name: Secco work (Beijing) chemical technology co., LTD  Gold
Tel: 010-69755668;
Email: 1139670422@qq.com
Products Intro: CAS:142-29-0
Purity:98% Package:25kg 5KG;1KG
Cyclopentene Basic information
Product Name:Cyclopentene
Synonyms:Cyclopenten;CYCLOPENTENE, STAB.;Cyclopentene, tech., ca 90%;Cyclopcnten;Cyclopentene, 98+%;Cyclopentene, ca 90%, tech;1-Cyclopentene;Cyclopentene, tech.
CAS:142-29-0
MF:C5H8
MW:68.12
EINECS:205-532-9
Product Categories:Pharmaceutical Intermediates;Alkenes;Cyclic;Organic Building Blocks
Mol File:142-29-0.mol
Cyclopentene Structure
Cyclopentene Chemical 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.)
Fp <−30 °F
storage temp. 0-6°C
solubility water: soluble0.535g/L at 25°C
form Liquid
color Colorless
Water Solubility immiscible
Sensitive Air Sensitive
BRN 635707
Stability:Stable. Highly flammable. Incompatible with strong oxidizing agents. Store cold.
CAS DataBase Reference142-29-0(CAS DataBase Reference)
NIST Chemistry ReferenceCyclopentene(142-29-0)
EPA Substance Registry SystemCyclopentene(142-29-0)
Safety Information
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
TSCA Yes
HazardClass 3
PackingGroup II
MSDS Information
ProviderLanguage
Cyclopentene English
ACROS English
SigmaAldrich English
ALFA English
Cyclopentene Usage And Synthesis
Chemical Propertiescolourless liquid with a petrol-like odour
DefinitionChEBI: A cycloalkene that is cyclopentane having one endocyclic double bond.
General DescriptionA colorless liquid. Less dense than water and insoluble in water. Flash point below 0°F. Vapors heavier than air. Inhalation of high concentrations may be narcotic. Used to make rubber and plastics.
Air & Water ReactionsHighly flammable. Insoluble in water.
Reactivity ProfileCyclopentene may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions.
Health HazardMay be harmful by inhalation, ingestion, or skin absorption. May cause eye and skin irritation.
Fire HazardSpecial Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flashback. Explosion may occur under fire condition.
Safety ProfileModerately toxic by ingestion and skin contact. A very dangerous fire hazard when exposed to flame or heat; can react with oxidning materials. Keep away from heat and open flame. To fight fire, use foam, CO2, dry chemical.
Purification MethodsFree cyclopentene from hydroperoxide by refluxing with cupric stearate. Fractionally distil it from Na. It can be chromatographed on a Dowex 710-Chromosorb W GLC column. Methods for cyclohexene should be applicable here. Also, it has been washed with 1M NaOH solution followed by water. It was dried over anhydrous Na2SO4, distilled over powdered NaOH under nitrogen, and passed through neutral alumina before use [Woon et al. J Am Chem Soc 108 7990 1986]. It was distilled in a dry nitrogen atmosphere from powdered fused NaOH through a Vigreux column (p 11), and then passed through activated neutral alumina before use [Wong et al. J Am Chem Soc 109 3428 1987]. [Beilstein 5 IV 209.]
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