Benzenamine, 4,4'-methylenebis[2-ethyl-

CAS 19900-65-3

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import value, 2024$84M

Import volumeCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Top sourceJapan 31%

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. 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 292159 · basket

EPA reports by year

2023: US production Zero · Imports Confidential

These shares come from HS customs code 292159, which covers 51 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).

JP 31%JapanIN 26%IndiaCN 21%ChinaCH 13%SwitzerlandBE 4%Belgium

United Kingdom
South Korea
Canada
Italy
Ukraine
Netherlands

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.

Aceto Us

Huntsman

The Hanson Group

Why It Matters

Sectors

ConstructionCore 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 2 sectors as 2 functional roles.

•Hardener in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Surface modifier in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.12/gAaron Chemicals LLC

CountryHong Kong

Pack$59.00 / 500 g

Purity98%

Vendors14 available

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

13 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.13	500 g	98%
BLD Pharmatech GmbH	Germany	$0.16	500 g	98%
BLD Pharmatech Ltd.	China	$0.16	500 g	98%
BLD Pharmatech Co., Limited	United States	$0.17	500 g	98%
Ambeed, Inc.	United States	$0.17	500 g	98%
Combi-Blocks, Inc.	United States	$0.25	1 kg	97%
A2B Chem LLC	United States	$0.26	1 kg	97%
AA BLOCKS	United States	$0.27	1 kg	98%
AK Scientific, Inc.	United States	$1.16	25 g	98%
Fluorochem UK	United Kingdom	$1.43	5 g	95%
Angene International Limited	United States	$3.20	25 g	98%
AstaTech (2 weeks)	United States	$8.40	5 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS19900-65-3

PubChem CIDNot recorded

DTXSIDDTXSID2051841

FormulaC17H22N2

Mol. Weight254.377 g/mol

SMILESCCC1=C(N)C=CC(CC2=CC(CC)=C(N)C=C2)=C1

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
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

Benzenamine, 4,4'-methylenebis[2-ethyl- (CAS 19900-65-3) https://chemicalindependence.com/chemical/19900-65-3/ EPA TSCA Inventory: CAS 19900-65-3. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 19900-65-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 19900-65-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292159 for CAS 19900-65-3. Reporting year: 2024. https://usatrade.census.gov/