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N-Isopropyl-N'-phenyl-p-phenylenediamine

CAS 101-72-4

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

Molecular structure of 101-72-4
US productionZero
Import value, 2024$132M
Import volumeCBI
Top sourceChina 27%

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 292151 · basket

EPA reports by year
2023
US production Zero · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 292151, which covers 51 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 27%ChinaBE 26%BelgiumKR 17%South KoreaDE 16%GermanyIN 13%India
EPA-registered importers (8)
Posco Holdings · KR South Korea
Ravago S A · LU Luxembourg
Safic-Alcan · FR France
Akrochem
Chemspec
Show all 8
Posco International America
Ravago Holdings America
Sovereign Chemical

Why It Matters

Sectors
Plastics & Rubber
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •Antioxidant in Rubber Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Synthetic Rubber ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •pH regulating agent in Rubber Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.03/gAaron Chemicals LLC
CountryHong Kong
Pack$16.00 / 500 g
Purity98%
Vendors21 available

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

20 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.04500 g98%
ChemsceneUnited States$0.071 kg—
Fluorochem EUGermany$0.10100 g98%
MedChemExpress MCESweden$0.111 kg98.42%
A2B Chem LLCUnited States$0.12500 g95%
AA BLOCKSUnited States$0.13500 g95%
ALFA AESARGermany$0.181 kg95%
Combi-Blocks, Inc.United States$0.251 kg98%
Cayman EuropeEstonia$0.28500 g95%
Apollo Scientific UKUnited Kingdom$0.28100 g95%
AK Scientific SpecializedUnited States$0.60100 g95%
AK Scientific, Inc.United States$0.84100 g98%
MedKoo Biosciences, IncUnited States$0.90500 g98%
Angene International LimitedUnited States$1.28100 g95%
AstaTech (2 weeks)United States$1.4825 g95%
TargetMol ChemicalsChina → United States$29.001 g96.69%
MolnovaChina$1284.00500 mg99%
Key Organics Ltd.United Kingdom$2740.0050 mg95%
AngeneChina → Hong Kong$4266.6730 mg98%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS101-72-4
PubChem CID7573
DTXSIDDTXSID1025485
FormulaC15H18N2
Mol. Weight226.32 g/mol
SMILESCC(C)NC1=CC=C(C=C1)NC2=CC=CC=C2

Data Sources

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Brief citations

N-Isopropyl-N'-phenyl-p-phenylenediamine (CAS 101-72-4) https://chemicalindependence.com/chemical/101-72-4/ EPA CompTox (DSSTox): DTXSID1025485. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1025485 PubChem: 7573. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7573 EPA Chemical Data Reporting: 101-72-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 101-72-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292151 for CAS 101-72-4. Reporting year: 2024. https://usatrade.census.gov/