9-Octadecenoic acid (9Z)-, octyl ester

CAS 32953-65-4

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$10M

Top sourceIndia 25%

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 291615 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291615, which covers 71 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).

IN 25%IndiaIT 19%ItalyID 15%IndonesiaDE 8%GermanyCN 8%China

Canada
Belgium
Sweden
Netherlands
Israel
Spain

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.

Ascent Industries

Domestic parents -- activity not disclosed (1)

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

Kao America

Why It Matters

Sectors

Plastics & Rubber

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

•Plasticizer in Rubber Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS32953-65-4

PubChem CID6436729

DTXSIDDTXSID8067733

FormulaC26H50O2

Mol. Weight394.7 g/mol

SMILESCCCCCCCCC=CCCCCCCCC(=O)OCCCCCCCC

Data Sources

EPA CompTox (DSSTox) · DTXSID8067733Retrieved 2026-04-06
PubChem · compound 6436729Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

9-Octadecenoic acid (9Z)-, octyl ester (CAS 32953-65-4) https://chemicalindependence.com/chemical/32953-65-4/ EPA CompTox (DSSTox): DTXSID8067733. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8067733 PubChem: 6436729. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6436729 EPA Chemical Data Reporting: 32953-65-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 32953-65-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291615 for CAS 32953-65-4. Reporting year: 2024. https://usatrade.census.gov/