Phenol, 2,2'-(2-methylpropylidene)bis[4,6-dimethyl-

CAS 33145-10-7

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.

Si Group

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

Used in 2 sectors as 2 functional roles.

•UV stabilizer in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
•Antioxidant in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
•UV stabilizer in Synthetic Rubber Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
•Antioxidant in Synthetic Rubber Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS33145-10-7

PubChem CID94446

DTXSIDDTXSID50865666

FormulaC20H26O2

Mol. Weight298.4 g/mol

SMILESCC1=CC(=C(C(=C1)C(C2=CC(=CC(=C2O)C)C)C(C)C)O)C

Data Sources

EPA CompTox (DSSTox) · DTXSID50865666Retrieved 2026-04-06
PubChem · compound 94446Retrieved 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, 2,2'-(2-methylpropylidene)bis[4,6-dimethyl- (CAS 33145-10-7) https://chemicalindependence.com/chemical/33145-10-7/ EPA CompTox (DSSTox): DTXSID50865666. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID50865666 PubChem: 94446. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/94446 EPA Chemical Data Reporting: 33145-10-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 33145-10-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting