1,1'-(1,1,2,2-Tetramethylethylene)dibenzene

CAS 1889-67-4

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$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.

Si Group

EPA-registered importers (4)

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

United Initiators Gmbh · DE Germany

Basf

United Initiators

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

Used in 2 sectors as 2 functional roles.

•Intermediate in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Plasticizer in Plastics Product Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.19/gAaron Chemicals LLC

CountryHong Kong

Pack$186.00 / 1 kg

Purity95%

Vendors18 available

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

17 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.20	1 kg	95%
A2B Chem LLC	United States	$0.24	500 g	95%
Combi-Blocks, Inc.	United States	$0.25	1 kg	95%
Chemscene	United States	$0.26	1 kg	—
BLD Pharmatech Co., Limited	United States	$0.27	1 kg	95%
BLD Pharmatech GmbH	Germany	$0.27	1 kg	95%
BLD Pharmatech Ltd.	China	$0.27	1 kg	95%
Ambeed, Inc.	United States	$0.27	1 kg	95%
AA BLOCKS	United States	$0.27	500 g	95%
Fluorochem EU	Germany	$0.31	1 kg	95%
MedChemExpress MCE	Sweden	$0.45	500 g	98.79%
Fluorochem UK	United Kingdom	$0.51	100 g	95%
AK Scientific, Inc.	United States	$0.92	25 g	98%
Synthonix	United States	$1.00	25 g	95%
AstaTech (2 weeks)	United States	$1.17	100 g	95%
Angene International Limited	United States	$2.84	25 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS1889-67-4

PubChem CID74681

DTXSIDDTXSID1062043

FormulaC18H22

Mol. Weight238.4 g/mol

SMILESCC(C)(C1=CC=CC=C1)C(C)(C)C2=CC=CC=C2

Data Sources

EPA CompTox (DSSTox) · DTXSID1062043Retrieved 2026-04-06
PubChem · compound 74681Retrieved 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

← Back to Dashboard ← Back to Plastics & Rubber

Brief citations

1,1'-(1,1,2,2-Tetramethylethylene)dibenzene (CAS 1889-67-4) https://chemicalindependence.com/chemical/1889-67-4/ EPA CompTox (DSSTox): DTXSID1062043. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1062043 PubChem: 74681. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/74681 EPA Chemical Data Reporting: 1889-67-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1889-67-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290290 for CAS 1889-67-4. Reporting year: 2024. https://usatrade.census.gov/