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Dicyclopentadiene structure
Chemical Name:
Molecular Formula:
Formula Weight:
MOL File:

Dicyclopentadiene Properties

Melting point:
33 °C(lit.)
Boiling point:
170 °C(lit.)
0.986 g/mL at 25 °C(lit.)
vapor pressure 
3 hPa (20 °C)
refractive index 
n20/D 1.511
Flash point:
114 °F
storage temp. 
Store below +30°C.
Specific Gravity
explosive limit
Water Solubility 
Immiscible with water.
Hydrolytic Sensitivity
4: no reaction with water under neutral conditions
Stable at room temperature, but may form explosive peroxides if stored in contact with air. Incompatible with oxidizing agents. Decomposes on heating. Flammable. Mixtures of the vapour with air are explosive.
CAS DataBase Reference
77-73-6(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances
EWG's Food Scores
NIST Chemistry Reference
4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-(77-73-6)
EPA Substance Registry System
Dicyclopentadiene (77-73-6)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H228-H304-H320-H331-H336-H370-H372-H373-H226-H302-H315-H319-H330-H335-H411-H225-H332
Precautionary statements  P210-P240-P241-P264-P270-P271-P280-P301+P310+P331+P330-P302+P352+P332+P313+P362+P364-P304+P340+P311-P305+P351+P338+P337+P313-P307+P311-P391-P403+P233-P405-P501-P260-P273-P284-P305+P351+P338-P310-P261-P303+P361+P353-P501a
Hazard Codes  F,Xn,N,T
Risk Statements  11-20/22-36/37/38-51/53-23-22-10
Safety Statements  36/37-61-45-26
RIDADR  UN 2048 3/PG 3
WGK Germany  3
RTECS  PC1050000
Autoignition Temperature 503 °C
HazardClass  3
PackingGroup  III
HS Code  29021990
Toxicity LD50 orally in Rabbit: 353 mg/kg LD50 dermal Rabbit 4940 mg/kg
NFPA 704
3 1

Dicyclopentadiene price More Price(16)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.03038 Dicyclopentadiene (stabilised) for synthesis 77-73-6 100 mL $27.01 2021-03-22 Buy
Sigma-Aldrich 8.03038 Dicyclopentadiene (stabilised) for synthesis 77-73-6 1 L $30.52 2021-03-22 Buy
Sigma-Aldrich 8.03038 Dicyclopentadiene (stabilised) for synthesis 77-73-6 2.5 L $50.87 2021-03-22 Buy
Sigma-Aldrich 454338 Dicyclopentadiene contains BHT as stabilizer 77-73-6 1kg $70.2 2021-03-22 Buy
Sigma-Aldrich 454338 Dicyclopentadiene contains BHT as stabilizer 77-73-6 2.5kg $167 2021-03-22 Buy

Dicyclopentadiene Chemical Properties,Uses,Production

Chemical Properties

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).
cyclopentadiene, although a stable molecule, has a strong tendency to form the more stable dimer dicyclopentadiene. This dimerisation already takes place at room temperature and its rate rapidly increases with elevated temperatures. This reaction however is reversible too; dicyclopentadiene "cracks" at temperatures above 140°C to form two cyclopentadiene molecules. The physical properties of pure cyclopentadiene and dicyclopentadiene are given below as well as some product specific characteristics and compositions.


It is used in the synthesis of chlorinated hydrocarbon pesticides and ferrocene; in paint, varnish, and resin manufacture; in elastomers used as water pond liners, and as a repellent for animals such as hares, rabbits, and deer, in winter or in summer. It is applied in the form of impregnated strip on deciduous and coniferous trees, or by spraying around ornamental plants and shrubs.


Dicyclopentadiene or DCPD is the dimer of cyclopentadiene (CPD) formed by a DielsAlder addition reaction. DCPD products originate from high temperature cracking of petroleum fractions and are best characterized as highly reactive intermediates used for a wide range of resins, i. e. aromatic hydrocarbons, unsaturated polyesters, phenolics and epoxies.
Dicyclopentadiene RESIN GRADE  - Most used in aromatic hydrocarbon and unsaturated polyester resins.
Dicyclopentadiene, UPR Grade- Developed for use in unsaturated polyester resins.
Dicyclopentadiene HIGH PURITY- Suited for water-white resins and specialty applications.


As a chemical intermediate in the manufacture of pesticides; in the production of resin coatings, adhesives, and fuel additives

Production Methods

Dicyclopentadiene is produced by recovery from hydrocarbon streams from high temperature cracked petroleum fractions. It is also a by-product of the coke oven industry. Cyclopentadiene polymerizes to dicyclopentadiene on standing.

Production Methods

Dicyclopentadiene is produced by thermal cracking of petrochemical feedstocks or as a by-product of the coke oven industry. It is also formed by spontaneous dimerization of cyclopentadiene.

General Description

A liquid with an acrid odor. Flash point 90°F. The vapors are irritating to the eyes and respiratory system. Subject to polymerization if subjected to heat for prolonged periods or if contaminated. If the polymerization takes place inside a container, the container may violently rupture. Insoluble in water. Density 8.2 lb / gal. Used in paints, varnishes, as an intermediate in insecticides, as a flame retardant in plastics.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

Dicyclopentadiene may react vigorously with oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. Can undergo exothermic polymierization reactions In the presence of various catalysts (such as acids) or initiators, if subjected to heat for prolonged periods, or if contaminated. Many undergo autoxidation upon exposure to the air to form explosive peroxides.

Health Hazard

LIQUID OR SOLID: Irritating to skin and eyes.

Fire Hazard

FLAMMABLE. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area.

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: May occur in presence of acids, but not hazardous; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Poison by ingestion and intraperitoneal routes. Moderately toxic by inhalation. Mildly toxic by skin contact. A severe skin and moderate eye irritant. Dangerous fire hazard when exposed to heat or flame; can react with oxidizing materials. To fight fire, use alcohol foam. When heated to decomposition it emits acrid smoke and fumes.

Potential Exposure

This compound is used in the manufacture of cyclopentadiene as a pesticide intermediate; in the production of ferrocene compounds; in paints, varnishes, and resin manufacture; in production of elastomers, resin systems, and polymers.


Undiluted dicyclopentadiene caused minor irritation when applied to the skin of rabbits, and only trace injury occurred when instilled in the eye.
Dicyclopentadiene has a camphorlike odor with a 100% recognition threshold of 0.02ppm; however, there may not be noticeable irritation below 10ppm.
The 2003 ACGIH threshold limit valuetime- weighted average (TLV-TWA) for dicyclopentadiene is 5ppm (27mg/m3).


UN2048 Dicyclopentadiene must carry a “FLAMMABLE LIQUID” label. It falls in Hazard Class 3


Forms explosive mixture with air above flash point. Depolymerizes at boiling point and forms two molecules of cyclopentadiene; unless inhibited and maintained under inert atmosphere to prevent polymerization. Violent reaction with strong oxidizers; strong acids; strong bases. Can accumulate static electrical charges, and may cause ignition of its vapors

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Dicyclopentadiene Preparation Products And Raw materials

Raw materials

Preparation Products

Dicyclopentadiene Suppliers

Global( 299)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shanghai Worldyang Chemical Co.,Ltd.
CHINA 832 58
+862162570268 CHINA 704 58
Henan DaKen Chemical CO.,LTD.
+86-371-66670886 China 21022 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22607 55
Shanghai Time Chemicals CO., Ltd.
+8618017249410 +86-021-57951555
+86-021-57951555 CHINA 1365 55
Hangzhou FandaChem Co.,Ltd.
+86-571-56059825 CHINA 8882 55
career henan chemical co
+86-371-86658258 CHINA 29959 58
Hebei Zhuangkai Biotechnology Co.,Ltd.
0311-89850048 China 299 58
Zhejiang ZETian Fine Chemicals Co. LTD
18957127338 CHINA 2007 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28229 58

View Lastest Price from Dicyclopentadiene manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-16 Dicyclopentadiene
US $1.00 / KG 1KG 99% 500ton/Month Hebei Yirun Sega Biological Technology Co. Ltd
2021-09-26 Dicyclopentadiene (DCPD)
US $800.00 / T 1T 80~85% 1000T Shandong Luning Pharmaceutical Co., Ltd.
2021-09-26 Dicyclopentadiene
US $1200.00 / T 1T 98% 600T Shandong Luning Pharmaceutical Co., Ltd.

Dicyclopentadiene Spectrum

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