Are Dicyclopentadiene and Cyclopentadiene Dimer the same material?

Yes. Dicyclopentadiene, DCPD and cyclopentadiene dimer identify CAS 77-73-6. It is not monomeric cyclopentadiene or polydicyclopentadiene. The order should state the DCPD purity or grade, inhibitor system and whether a resin, EPDM or general industrial use is intended.

What is the physical form of commercial DCPD?

Commercial DCPD may be a waxy solid or a liquid near ambient temperature depending on composition and temperature. Reference values include a melting point around 32-34 degrees C, boiling point about 170 degrees C, density about 0.98 g/cm3 and flash point roughly 26-33 degrees C. Confirm the supplied form and endo/exo profile.

What is DCPD used for and which derivatives are separate products?

DCPD is used as a cyclic olefin intermediate in selected EPDM value chains and as a feedstock for ethylidene norbornene and other cyclic olefin derivatives. DCPD-maleic anhydride reaction products and chlorinated or hydrogenated derivatives are separate downstream products, so process suitability must be confirmed independently.

Which specifications should be agreed for industrial DCPD?

Set DCPD assay, cyclopentadiene or codimer content, oligomers, colour, water, acidity, inhibitor level and dimer or trimer profile. Resin, EPDM and polymer users may select different purity grades, so confirm the GC basis and downstream-process requirements.

How should DCPD be packaged, stored and transported?

Use compatible sealed packaging with stabilizer and temperature controls confirmed for the offered composition, quantity, transport route and destination. Keep it away from heat, ignition sources and polymerization-promoting conditions, and maintain the inhibitor level and storage temperature appropriate for the grade.

Dicyclopentadiene (DCPD) CAS 77-73-6

Dicyclopentadiene (DCPD), CAS 77-73-6, is a cyclic olefin intermediate used in hydrocarbon and unsaturated polyester resin value chains. Specify purity or composition, stabilizer, supplied form, quantity and destination when requesting the current TDS, lot COA, SDS and quotation.

CAS: 77-73-6
Synonyms: Dicyclopentadiene; Cyclopentadiene dimer; Bicyclopentadiene; DCPD
Einecs: 201-052-9
Molecular Formula: C₁₀H₁₂
Grade: Confirm on the current specification and lot COA: purity or composition, endo/exo profile where relevant, codimers, stabilizer, colour, water and supplied form.
Package: Compatible sealed packaging with stabilizer and temperature controls confirmed for the offered composition, quantity, transport route and destination.

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Product Description

Product name: Dicyclopentadiene (DCPD)

Recognized names: Dicyclopentadiene; Cyclopentadiene dimer; Bicyclopentadiene; DCPD

Chemical formula: C₁₀H₁₂

Molar mass: 132.20 g/mol

CAS Number: 77-73-6

EINECS Number: 201-052-9

Physical form: commercial DCPD may be a waxy solid or a liquid near ambient temperature depending on composition and temperature; confirm the supplied form.

Boiling point: 170 °C

Reference density: about 0.98 g/cm³ near 20 °C. Confirm the value, test conditions and offered grade in the current TDS.

Reference flash point: about 32 °C. Confirm the value, test conditions and offered grade in the current SDS.

Industrial applications and procurement boundaries:

1. DCPD is used as a cyclic olefin intermediate in selected EPDM value chains; suitability depends on composition, stabilizer and the downstream process.

2. It is a feedstock for ethylidene norbornene (ENB) and other cyclic olefin derivatives; ENB is a distinct downstream product.

3. DCPD-maleic anhydride reaction products are used in selected resin and curing-agent chemistry; their identity and performance are not properties of DCPD itself.

4. Chlorinated or hydrogenated DCPD derivatives are separate downstream substances and must not be represented as the supplied DCPD grade.

5. Hydrocarbon and unsaturated polyester resin applications require the buyer to confirm purity or composition, colour, stabilizer and process compatibility.

6. RFQ information: required purity or composition, endo/exo profile if relevant, stabilizer, supplied form, quantity, packaging, destination and required documents.

FAQ - Technical & Supply Chain

Q:
Are Dicyclopentadiene and Cyclopentadiene Dimer the same material?

A: Yes. Dicyclopentadiene, DCPD and cyclopentadiene dimer identify CAS 77-73-6. It is not monomeric cyclopentadiene or polydicyclopentadiene. The order should state the DCPD purity or grade, inhibitor system and whether a resin, EPDM or general industrial use is intended.
Q:
What is the physical form of commercial DCPD?

A: Commercial DCPD may be a waxy solid or a liquid near ambient temperature depending on composition and temperature. Reference values include a melting point around 32-34 degrees C, boiling point about 170 degrees C, density about 0.98 g/cm3 and flash point roughly 26-33 degrees C. Confirm the supplied form and endo/exo profile.
Q:
What is DCPD used for and which derivatives are separate products?

A: DCPD is used as a cyclic olefin intermediate in selected EPDM value chains and as a feedstock for ethylidene norbornene and other cyclic olefin derivatives. DCPD-maleic anhydride reaction products and chlorinated or hydrogenated derivatives are separate downstream products, so process suitability must be confirmed independently.
Q:
Which specifications should be agreed for industrial DCPD?

A: Set DCPD assay, cyclopentadiene or codimer content, oligomers, colour, water, acidity, inhibitor level and dimer or trimer profile. Resin, EPDM and polymer users may select different purity grades, so confirm the GC basis and downstream-process requirements.
Q:
How should DCPD be packaged, stored and transported?

A: Use compatible sealed packaging with stabilizer and temperature controls confirmed for the offered composition, quantity, transport route and destination. Keep it away from heat, ignition sources and polymerization-promoting conditions, and maintain the inhibitor level and storage temperature appropriate for the grade.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

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Send the CAS number, grade, quantity, packing preference and destination.

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Storage & Shipping

Product-specific conditions are confirmed before order.

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