Pyromellitic acid 2-phenyl-2-imidazoline salt (1:2)

CAS 54553-91-2

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

US productionZero

Import value, 2024$114M

Import volume70.5K lb

Import dependency100%

Top sourceChina 26%

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.

Pyromellitic acid 2-phenyl-2-imidazoline salt (1:2) · US import value by year

2013: $107M · Peak 2016: $1.2B · 2024: $114M · 2025: $116M

Where It Comes From

Customs basis: HS 293329 · basket

EPA reports by year

2023: US production Zero · Imports 70.5K lb
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 293329, which covers 173 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 26%ChinaIN 17%IndiaKR 16%South KoreaDE 9%GermanyIT 9%Italy

Australia
Brazil
Czech Republic
Ireland
Sweden
Ukraine
Poland
United Arab Emirates
Hungary
Israel
Netherlands
Canada
Saudi Arabia
Greece
Belgium
Austria
Latvia
Singapore
Denmark

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.

Chori America

Why It Matters

Sectors

Paints & Coatings

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.

•Paint additives and coating additives not described by other categories in Paint and Coating Manufacturing (100%)Processing as a reactant
•Chemical reaction regulator in Fabricated Metal Product Manufacturing (100%)Processing—incorporation into article
•Chemical reaction regulator in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS54553-91-2

PubChem CID162752

DTXSIDDTXSID3068964

FormulaC28H26N4O8

Mol. Weight546.5 g/mol

SMILESC1CN=C(N1)C2=CC=CC=C2.C1CN=C(N1)C2=CC=CC=C2.C1=C(C(=CC(=C1C(=O)O)C(=O)O)C(=O)O)C(=O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID3068964Retrieved 2026-04-06
PubChem · compound 162752Retrieved 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

Pyromellitic acid 2-phenyl-2-imidazoline salt (1:2) (CAS 54553-91-2) https://chemicalindependence.com/chemical/54553-91-2/ EPA CompTox (DSSTox): DTXSID3068964. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3068964 PubChem: 162752. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/162752 EPA Chemical Data Reporting: 54553-91-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 54553-91-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293329 for CAS 54553-91-2. Reporting year: 2024. https://usatrade.census.gov/