Phenol, 4,4'-(1-methylethylidene)bis-, polymer with 2-(chloromethyl)oxirane, 2-propenoate

CAS 55818-57-0

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Top sourceNo public record

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. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Why It Matters

Sectors

ElectronicsPaper & Printing

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.

•Hardener in Printing and Related Support ActivitiesProcessing—incorporation into formulation, mixture, or reaction product
•Surface modifier in Computer and Electronic Product ManufacturingProcessing—incorporation into article

Chemical Identity

CAS55818-57-0

PubChem CIDNot recorded

DTXSIDDTXSID501011994

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID501011994Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Phenol, 4,4'-(1-methylethylidene)bis-, polymer with 2-(chloromethyl)oxirane, 2-propenoate (CAS 55818-57-0) https://chemicalindependence.com/chemical/55818-57-0/ EPA CompTox (DSSTox): DTXSID501011994. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID501011994 EPA Chemical Data Reporting: 55818-57-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 55818-57-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting