Quaterphenyl

CAS 29036-02-0

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$68M

Top sourceIndia 35%

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 290290 · basket

EPA reports by year

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

These shares come from HS customs code 290290, which covers 171 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 35%IndiaTW 11%TaiwanES 10%SpainDE 10%GermanyCN 8%China

Czech Republic
Netherlands
Switzerland
Pakistan
United Kingdom
Austria
Denmark
Indonesia
Lithuania
Hong Kong
Finland

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.

Eastman Chemical

Why It Matters

Sectors

Core 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 1 sector as 2 functional roles.

•Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
•Heat transferring agent in All Other Basic Organic Chemical ManufacturingUse—non-incorporative activities

Vendor Pricing

$65.40/gAaron Chemicals LLC

CountryHong Kong

Pack$327.00 / 5 g

Purity95%

Vendors6 available

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

5 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$66.20	5 g	95%
AstaTech (2 weeks)	United States	$107.60	5 g	95%
AA BLOCKS	United States	$285.00	1 g	—
A2B Chem LLC	United States	$810.00	100 mg	—
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS29036-02-0

PubChem CID14422

DTXSIDDTXSID5029346

FormulaC24H18

Mol. Weight306.4 g/mol

SMILESC1=CC=C(C=C1)C2=CC(=CC=C2)C3=CC=CC(=C3)C4=CC=CC=C4

Data Sources

EPA CompTox (DSSTox) · DTXSID5029346Retrieved 2026-04-06
PubChem · compound 14422Retrieved 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

Quaterphenyl (CAS 29036-02-0) https://chemicalindependence.com/chemical/29036-02-0/ EPA CompTox (DSSTox): DTXSID5029346. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5029346 PubChem: 14422. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/14422 EPA Chemical Data Reporting: 29036-02-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 29036-02-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290290 for CAS 29036-02-0. Reporting year: 2024. https://usatrade.census.gov/