Cyclopentane

CAS 287-92-3

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$90M

Top sourceJapan 21%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. 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 Confidential · Imports Confidential
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 (4)

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

Shell Plc · GB United Kingdom

Shell Petroleum

The Goodyear Tire & Rubber

Trafigura Trading

Domestic parents -- activity not disclosed (4)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Eastman Chemical

Kraton

Tauber Petrochemical

Wego Chemical Group

EPA-registered importers (9)

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

Basf Se · DE Germany

Toyota Tsusho · JP Japan

Basf

Dow Chemical

Gunvor Usa

Show all 9

Ineos Oligomers

Toyota Tsusho America

Tribute Energy

Univar Solutions Usa

Why It Matters

Sectors

EnergyElectronicsConstructionPlastics & 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 7 sectors as 5 functional roles.

•Intermediate in Petrochemical Manufacturing (25%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel in All Other Chemical Product and Preparation Manufacturing (75%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Petroleum Refineries (100%)Processing—incorporation into formulation, mixture, or reaction product
•Solvent in Asphalt Paving, Roofing, and Coating Materials ManufacturingProcessing—incorporation into article
•Solvent in Plastics Material and Resin ManufacturingUse—non-incorporative activities
•Propellants, non-motive (blowing agents) in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into article
•Fuel agents in Petroleum Refineries (100%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel in Petroleum Refineries (100%)Use—non-incorporative activities
•Propellants, non-motive (blowing agents) in Electrical Equipment, Appliance, and Component ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Fuel in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.80/gA2B Chem LLC

CountryUnited States

Pack$80.00 / 100 g

Purity98%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
Combi-Blocks, Inc.	United States	$0.80	100 g	98%
AA BLOCKS	United States	$0.96	100 g	98%
Labotest KG	Germany	$217.80	5000 mg	90%
Key Organics Ltd.	United Kingdom	$1960.00	100 mg	95%

Chemical Identity

CAS287-92-3

PubChem CID9253

DTXSIDDTXSID6024886

FormulaC5H10

Mol. Weight70.13 g/mol

SMILESC1CCCC1

Data Sources

EPA CompTox (DSSTox) · DTXSID6024886Retrieved 2026-04-06
PubChem · compound 9253Retrieved 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

Cyclopentane (CAS 287-92-3) https://chemicalindependence.com/chemical/287-92-3/ EPA CompTox (DSSTox): DTXSID6024886. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6024886 PubChem: 9253. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/9253 EPA Chemical Data Reporting: 287-92-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 287-92-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290219 for CAS 287-92-3. Reporting year: 2024. https://usatrade.census.gov/