Tech Serve Solutions

Cyclopentene

CAS 142-29-0C5H8Chemical Synthesis

Cyclopentene (CAS: 142-29-0), a cyclic alkene with the formula C5H8 and a molecular weight of 68.12 g/mol, is a volatile organic compound. It serves as a valuable building block in organic synthesis and chemical research. Its reactivity as an alkene makes it useful for various chemical transformations, including polymerisation and addition reactions. Cyclopentene is supplied by Tech Serve Solutions for laboratory and industrial applications requiring a foundational cyclic olefin.

Email us
Cyclopentene (C5H8) — chemical structure, CAS 142-29-0; Chemistry, fine chemical supplied by Tech Serve Solutions
AlkenesBuilding BlocksChemical SynthesisCyclicOrganic Building Blocks
01 /Applications

Organic Synthesis Intermediate

Cyclopentene is utilised as a fundamental building block in the synthesis of more complex organic molecules. Its cyclic structure and alkene functionality allow for a variety of addition and functionalisation reactions crucial in research and development.

Monomer for Polymerisation

This cyclic olefin can participate in ring-opening metathesis polymerisation (ROMP) or other polymerisation techniques to form specialty polymers. These polymers may find applications in materials science or advanced chemical formulations.

Research and Development

As a reactive cyclic alkene, cyclopentene is employed in academic and industrial research laboratories for exploring new synthetic pathways and reaction mechanisms. It is a key reagent for studying alkene chemistry.

02 /Properties
Molecular weight68.12
Empirical formulaC5H8
Assay96%
Boiling point44-46 °C(lit.)
Density0.771 g/mL at 25 °C(lit.)
Refractive indexn20/D 1.421(lit.)
Vapour pressure20.89 psi (55 °C)6.11 psi (20 °C)
Melting point−135 °C(lit.)
Autoignition temp743 °F
Storage temperature2-8°C
03 /Safety & handling
GHS hazard pictogram: Flammable (GHS02)
Flammable
GHS hazard pictogram: Harmful / irritant (GHS07)
Harmful / irritant
GHS hazard pictogram: Health hazard (GHS08)
Health hazard
Danger

Hazard statements

  • H225Highly flammable liquid and vapour
  • H302Harmful if swallowed
  • H304May be fatal if swallowed and enters airways
  • H315Causes skin irritation

Precautionary statements

  • P210Keep away from heat, sparks and open flames. No smoking
  • P280Wear protective gloves, clothing and eye/face protection
  • P301IF SWALLOWED
  • P331Do NOT induce vomiting
Protective equipmentEyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US)
Flash point-34 °C / -29.2 °F
Transport (UN / ADR)UN 2246 3 / PGII
Water hazard class (WGK, DE)3
Hazard codes (EU)F,Xn
Risk statements (R)11-21/22-38-65
Safety statements (S)9-16-26-33-36-62

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry
CAS number
142-29-0
MDL number
MFCD00001394
PubChem substance
24857967
Beilstein registry
635707
05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Cyclopentene used for?

+

Cyclopentene is primarily used as a building block in organic synthesis, as a monomer for polymerisation, and in chemical research and development due to its reactive cyclic alkene structure.

What is the CAS number and formula for Cyclopentene?

+

The CAS number for Cyclopentene is 142-29-0, and its chemical formula is C5H8.

What grade and purity does Tech Serve Solutions supply?

+

Tech Serve Solutions supplies Cyclopentene with a minimum assay of 96%. This product is intended for research and industrial use, and TSS does not represent it as USP, BP, or EP grade.

How should Cyclopentene be handled safely?

+

Cyclopentene is highly flammable and can be harmful if swallowed, inhaled, or absorbed through the skin. It is also a skin and respiratory irritant. Handling requires strict adherence to safety protocols, including the use of appropriate personal protective equipment such as gloves, safety glasses, and respiratory protection in a well-ventilated area. Refer to the Safety Data Sheet (SDS) for full details.

Is Cyclopentene a controlled substance?

+

The provided data does not indicate that Cyclopentene is a controlled substance. However, users should always verify local regulations.

How is Cyclopentene packed, shipped, and exported?

+

Cyclopentene is packed in accordance with UN 2246 Class 3 regulations for flammable liquids, typically in robust containers suitable for international shipping. Tech Serve Solutions is experienced in exporting chemicals globally.

How can I request a sample or quote for Cyclopentene?

+

To request a sample or a quotation for Cyclopentene, please contact the Tech Serve Solutions sales team through our website or by phone, providing your specific requirements and shipping details.

Need Cyclopentene in a specific grade or volume?