Hexanedioic acid, polymer with 1,4-butanediol and 1,1'-methylenebis[4-isocyanatobenzene]
CAS 26375-23-5
EPA and Census publish no US supply data for this chemical.
EPA exempts this chemical from its production survey.
Why supply is unknownWhere It Comes From
Customs basis: HS 390950 · narrow
EPA and Census publish no US supply data for this chemical.
HS customs code 390950 covers 5 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
Hexanedioic acid, polymer with 1,4-butanediol and 1,1'-methylenebis[4-isocyanatobenzene] (CAS 26375-23-5) https://chemicalindependence.com/chemical/26375-23-5/ EPA TSCA Inventory: CAS 26375-23-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory