Tricyclopentadiene

CAS 7158-25-0

Used in 4 industrial sectors tracked by the EPA.

US production261.2K lb

Import value, 2024$90M

Import volume661.8K lb

Import dependency72%

Top sourceJapan 21%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290219 · basket

EPA reports by year

2023: US production 261.2K lb · Imports 661.8K lb
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290219, which covers 108 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

JP 21%JapanBR 12%BrazilTW 12%TaiwanKR 11%South KoreaDE 9%Germany

Russia
United Kingdom
Indonesia
South Africa
Ukraine
Madagascar
Hungary
Hong Kong
Czech Republic
Israel

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Trecora Wax

EPA-registered importers (2)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Zeon Corporaton · JP Japan

Zeon Chemicals

Why It Matters

Sectors

EnergyTransportationPlastics & RubberCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 4 sectors as 1 functional role.

•Monomers in All Other Basic Organic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Monomers in Oil and Gas Drilling, Extraction, and Support activities (10%)Processing—incorporation into article
•Monomers in Transportation Equipment Manufacturing (30%)Processing—repackaging
•Monomers in Plastics Product Manufacturing (90%)Processing—incorporation into article

Vendor Pricing

$995.00/gCombi-Blocks (back-ordered)

CountryUnited States

Pack$995.00 / 1 g

Purity95%

Vendors2 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

1 more vendor

Vendor	Country	$/g	Pack	Purity
AstaTech (2 weeks)	United States	$1217.00	1 g	95%

Chemical Identity

CAS7158-25-0

PubChem CID111263

DTXSIDDTXSID50864018

FormulaC15H18

Mol. Weight198.3 g/mol

SMILESC1C=CC2C1C3CC2C4C3C5CC4C=C5

Data Sources

EPA CompTox (DSSTox) · DTXSID50864018Retrieved 2026-04-06
PubChem · compound 111263Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Tricyclopentadiene (CAS 7158-25-0) https://chemicalindependence.com/chemical/7158-25-0/ EPA CompTox (DSSTox): DTXSID50864018. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID50864018 PubChem: 111263. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/111263 EPA Chemical Data Reporting: 7158-25-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7158-25-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290219 for CAS 7158-25-0. Reporting year: 2024. https://usatrade.census.gov/