2,5-Bis(1,1,3,3-tetramethylbutyl)hydroquinone

CAS 903-19-5

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$72M

Top sourceIndia 30%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290729 · basket

EPA reports by year

2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290729, which covers 82 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 30%IndiaDE 19%GermanyCN 16%ChinaJP 11%JapanIT 7%Italy

Austria
United Kingdom
Denmark
Canada
Colombia
New Zealand
Poland
Netherlands
Ukraine

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.

Fujifilm Holdings Japan · JP Japan

Fujifilm Holdings America

Why It Matters

Sectors

Consumer Products

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

•Photosensitive agent in Photographic Film, Paper, Plate, and Chemical Manufacturing (100%)Processing—incorporation into article

Vendor Pricing

$0.41/gA2B Chem LLC

CountryUnited States

Pack$41.00 / 100 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
BLD Pharmatech Co., Limited	United States	$0.51	100 g	95%
BLD Pharmatech GmbH	Germany	$0.51	100 g	95%
BLD Pharmatech Ltd.	China	$0.51	100 g	95%
Ambeed, Inc.	United States	$0.51	100 g	95%
AA BLOCKS	United States	$0.51	100 g	95%
Combi-Blocks, Inc.	United States	$0.51	100 g	95%
Aaron Chemicals LLC	Hong Kong	$0.67	500 g	95%
Angene Chemical	China → Hong Kong	$0.68	500 g	95%
AK Scientific Specialized	United States	$4.72	25 g	95%
AstaTech (2 weeks)	United States	$5.92	25 g	95%
AK Scientific, Inc.	United States	$6.60	25 g	95%
Angene International Limited	United States	$11.60	25 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS903-19-5

PubChem CID70180

DTXSIDDTXSID7052733

FormulaC22H38O2

Mol. Weight334.5 g/mol

SMILESCC(C)(C)CC(C)(C)C1=CC(=C(C=C1O)C(C)(C)CC(C)(C)C)O

Data Sources

EPA CompTox (DSSTox) · DTXSID7052733Retrieved 2026-04-06
PubChem · compound 70180Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · 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

2,5-Bis(1,1,3,3-tetramethylbutyl)hydroquinone (CAS 903-19-5) https://chemicalindependence.com/chemical/903-19-5/ EPA CompTox (DSSTox): DTXSID7052733. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7052733 PubChem: 70180. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/70180 EPA Chemical Data Reporting: 903-19-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 903-19-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290729 for CAS 903-19-5. Reporting year: 2024. https://usatrade.census.gov/