Dicyclopentadiene
CAS 77-73-6
EC 201-052-9
Formula C10H12
MW 132.2 g/mol
Flavors & Fragrances Personal Care & CosmeticsPrinting & PackagingPlastics & Polymers Flavoring & AcidulantPolymerization Initiation
Description
Dicyclopentadiene (DCPD, CAS 77-73-6) is the dimerized form of cyclopentadiene, formed through a Diels-Alder reaction between two cyclopentadiene molecules. It is catalogued under EC 201-052-9 with the molecular formula C10H12, and is also referenced by the synonyms Bicyclopentadiene and Biscyclopentadiene. No E-code designation applies to this substance.
In polymer manufacturing, DCPD undergoes ring-opening metathesis polymerization (ROMP) to produce polydicyclopentadiene, a thermoset resin used in structural components for automotive and industrial applications. It also functions as a reactive monomer and crosslinker in unsaturated polyester resins, contributing to chain extension and network formation. In fragrance applications, its camphor-like odor profile is exploited at controlled concentrations.
DCPD is supplied under REACH compliance for the European market and is available in technical and high-purity grades. Standard packaging includes drums and IBC containers suited to its liquid state above 32 degrees Celsius. Buyers should confirm grade specifications against application requirements prior to procurement.
In polymer manufacturing, DCPD undergoes ring-opening metathesis polymerization (ROMP) to produce polydicyclopentadiene, a thermoset resin used in structural components for automotive and industrial applications. It also functions as a reactive monomer and crosslinker in unsaturated polyester resins, contributing to chain extension and network formation. In fragrance applications, its camphor-like odor profile is exploited at controlled concentrations.
DCPD is supplied under REACH compliance for the European market and is available in technical and high-purity grades. Standard packaging includes drums and IBC containers suited to its liquid state above 32 degrees Celsius. Buyers should confirm grade specifications against application requirements prior to procurement.
Physical Properties
| Melting Point | 32 °C |
| Boiling Point | 64-65 °C @ Press: 14 Torr |
| Density | 0.9302 g/cm³ @ Temp: 35 °C |
| Flash Point | 114 °F |
| Appearance | Cyclopentadiene is a crystalline solid or a liquid (above 32°C) with a disagreeable, camphor-like odor. The Odor Threshold is 0.011 (detectable); 0.020 ppm (recognizable). |
| Color | Clear |
| Odor | Camphor-like. |
| Form | Liquid |
| Water Solubility | Immiscible with water. |
| Vapor Pressure | 3 hPa (20 °C) |
| Refractive Index | n 20/D 1.511 |
| Log P | 3.300 (est) |
Safety & Handling (Learn More)
Danger GHS02 GHS07 GHS09 GHS06 GHS08
H
H225H226H228H302H304H313H315H317H319H320H330H332H335H336H351H361H370H372H373H400H401H411H412
P
P203P210P233P240P241P242P243P260P261P264P270P271P272P273P280P284P316P317P318P319P320P321P330P331P391P405P501P264+P265P301+P316P301+P317P302+P317P302+P352P304+P340P308+P316P332+P317P333+P317P337+P317P362+P364P370+P378P403+P233P403+P235P303+P361+P353P305+P351+P338
Trade & Regulatory
| HS Code | 29021990 |
| UN Number | 2048 |
| ADR Class | 3 |
| Packing Group | III |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 3 |
Other Names
tricyclo[5.2.1.02,6]deca-3,8-dienebicyclopentadiene3a,4,7,7a-tetrahydro-4,7-methanoindeneDCPDBiscyclopentadieneCYCLOPENTADIENE DIMER
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Derivatives
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