1,3-Diazetidin-2-one, 1,3-bis[4-[(4-isocyanatophenyl)methyl]phenyl]-4-[[4-[(4-isocyanatophenyl)methyl]phenyl]imino]-

CAS 31107-36-5

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

US productionZero

Import value, 2024$1.4B

Import volume25.4K lb

Import dependency100%

Top sourceIreland 33%

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-Diazetidin-2-one, 1,3-bis[4-[(4-isocyanatophenyl)methyl]phenyl]-4-[[4-[(4-isocyanatophenyl)methyl]phenyl]imino]- · US import value by year

Peak 2013: $4.7B · 2024: $1.4B · 2025: $1.4B

Where It Comes From

Customs basis: HS 293399 · basket

EPA reports by year

2023: US production Zero · Imports 25.4K lb

These shares come from HS customs code 293399, which covers 518 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).

IE 33%IrelandCN 26%ChinaIN 11%IndiaDE 9%GermanyIT 4%Italy

Taiwan
Poland
Canada
Ivory Coast
Greece
Hungary
Indonesia
Latvia
Belgium
Slovakia
Czech Republic
Austria
Netherlands
Finland
Denmark
Croatia
Australia
South Africa
Sweden
Hong Kong
Malta
Singapore
Lithuania
Malaysia
Oman
Serbia

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.

Tri-Iso

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

•Monomers in Plastics Material and Resin Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS31107-36-5

PubChem CIDNot recorded

DTXSIDDTXSID6067595

FormulaC44H30N6O4

Mol. Weight706.762 g/mol

SMILESO=C=NC1=CC=C(CC2=CC=C(C=C2)N=C2N(C(=O)N2C2=CC=C(CC3=CC=C(C=C3)N=C=O)C=C2)C2=CC=C(CC3=CC=C(C=C3)N=C=O)C=C2)C=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

1,3-Diazetidin-2-one, 1,3-bis[4-[(4-isocyanatophenyl)methyl]phenyl]-4-[[4-[(4-isocyanatophenyl)methyl]phenyl]imino]- (CAS 31107-36-5) https://chemicalindependence.com/chemical/31107-36-5/ EPA TSCA Inventory: CAS 31107-36-5. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 31107-36-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 31107-36-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293399 for CAS 31107-36-5. Reporting year: 2024. https://usatrade.census.gov/