1,3-Bis(4-cyanophenyl)propane

CAS 1156-51-0

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$133M

Import volume29.8K lb

Import dependency100%

Top sourceChina 47%

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.

1,3-Bis(4-cyanophenyl)propane · US import value by year

2013: $68M · Peak 2022: $165M · 2024: $133M · 2025: $107M

Where It Comes From

Customs basis: HS 292990 · basket

EPA reports by year

2023: US production Zero · Imports 29.8K lb
2019: US production Zero · Imports 172.0K lb

These shares come from HS customs code 292990, which covers 38 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 47%ChinaDE 20%GermanyIN 14%IndiaGB 4%United KingdomKR 4%South Korea

Canada
Spain
Taiwan
Malaysia
Mexico
Ukraine
Netherlands
Russia
Latvia
Ireland
Australia
Sweden
Austria
Lithuania

EPA-registered importers (1)

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

Arxada

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

•Hardener in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.11/gAaron Chemicals LLC

CountryHong Kong

Pack$55.00 / 500 g

Purity95%

Vendors19 available

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

18 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.12	500 g	95%
A2B Chem LLC	United States	$0.15	500 g	98%
BLD Pharmatech Ltd.	China	$0.16	1 kg	97%
Ambeed, Inc.	United States	$0.16	1 kg	97%
BLD Pharmatech Co., Limited	United States	$0.18	500 g	97%
MedChemExpress MCE	Sweden	$0.19	1 kg	—
AA BLOCKS	United States	$0.19	500 g	97%
Fluorochem EU	Germany	$0.21	100 g	95%
Combi-Blocks, Inc.	United States	$0.25	1 kg	98%
BLD Pharmatech GmbH	Germany	$0.40	100 g	97%
Synthonix	United States	$1.08	25 g	97%
AstaTech (2 weeks)	United States	$1.15	500 g	95%
AK Scientific, Inc.	United States	$1.47	100 g	98%
Biopharma PEG Scientific Inc.	United States	$1.58	100 g	98%
Fluorochem UK	United Kingdom	$1.72	5 g	95%
AK Scientific Specialized	United States	$33.40	5 g	98%
Angene International Limited	United States	$58.40	5 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS1156-51-0

PubChem CID70872

DTXSIDDTXSID60893753

FormulaC17H14N2O2

Mol. Weight278.3 g/mol

SMILESCC(C)(C1=CC=C(C=C1)OC#N)C2=CC=C(C=C2)OC#N

Data Sources

EPA CompTox (DSSTox) · DTXSID60893753Retrieved 2026-04-06
PubChem · compound 70872Retrieved 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

1,3-Bis(4-cyanophenyl)propane (CAS 1156-51-0) https://chemicalindependence.com/chemical/1156-51-0/ EPA CompTox (DSSTox): DTXSID60893753. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID60893753 PubChem: 70872. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/70872 EPA Chemical Data Reporting: 1156-51-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1156-51-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292990 for CAS 1156-51-0. Reporting year: 2024. https://usatrade.census.gov/