Phenylicosane-1,3-dione

CAS 58446-52-9

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$16M

Top sourceChina 55%

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 291439 · basket

EPA reports by year

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

These shares come from HS customs code 291439, which covers 86 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).

CN 55%ChinaIN 26%IndiaIT 7%ItalyDE 5%GermanyGB 2%United Kingdom

Slovakia
Japan
Netherlands
Hong Kong
Ukraine
Latvia

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.

Polymer Additves

EPA-registered importers (3)

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

Syensqo Sa · BE Belgium

Akdeniz Chemson Additives

Solvay

Why It Matters

Sectors

Plastics & 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

•Heat stabilizer in Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$3.86/gCombi-Blocks, Inc.

CountryUnited States

Pack$1930.00 / 500 g

Purity95%

Vendors14 available

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

13 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$4.19	500 g	95%
BLD Pharmatech Co., Limited	United States	$4.36	500 g	95%
BLD Pharmatech Ltd.	China	$4.36	500 g	95%
Ambeed, Inc.	United States	$4.36	500 g	95%
A2B Chem LLC	United States	$4.48	100 g	95%
Angene Chemical	China → Hong Kong	$4.79	500 g	97%
AA BLOCKS	United States	$4.86	500 g	95%
BLD Pharmatech GmbH	Germany	$6.30	100 g	95%
AK Scientific Specialized	United States	$6.32	100 g	95%
AK Scientific, Inc.	United States	$8.46	100 g	98%
AstaTech (2 weeks)	United States	$45.56	25 g	95%
Angene International Limited	United States	$1400.00	100 mg	99%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS58446-52-9

PubChem CID94050

DTXSIDDTXSID1052246

FormulaC26H42O2

Mol. Weight386.6 g/mol

SMILESCCCCCCCCCCCCCCCCCC(=O)CC(=O)C1=CC=CC=C1

Data Sources

EPA CompTox (DSSTox) · DTXSID1052246Retrieved 2026-04-06
PubChem · compound 94050Retrieved 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

Phenylicosane-1,3-dione (CAS 58446-52-9) https://chemicalindependence.com/chemical/58446-52-9/ EPA CompTox (DSSTox): DTXSID1052246. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1052246 PubChem: 94050. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/94050 EPA Chemical Data Reporting: 58446-52-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 58446-52-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291439 for CAS 58446-52-9. Reporting year: 2024. https://usatrade.census.gov/