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Tetrabutyl ethylidenebisphenol

CAS 35958-30-6

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

Molecular structure of 35958-30-6
US productionCBI
Import value, 2024$72M
Top sourceIndia 30%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290729 · basket

EPA reports by year
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 290729, which covers 82 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 30%IndiaDE 19%GermanyCN 16%ChinaJP 11%JapanIT 7%Italy
EPA-registered manufacturers (1)
Cymer-Dayton
Domestic parents -- activity not disclosed (2)
Si Group Usa (Usaa)
Songwon International Americas

Why It Matters

Sectors
Plastics & Rubber
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •UV stabilizer in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.69/gAA BLOCKS
CountryUnited States
Pack$269.00 / 100 g
Purity99%
Vendors8 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

7 more vendors
VendorCountry$/gPackPurity
A2B Chem LLCUnited States$3.9225 g—
Aaron Chemicals LLCHong Kong$16.0825 g97%
BLD Pharmatech Ltd.China$17.5225 g97%
Angene ChemicalChina → Hong Kong$18.4425 g97%
AstaTech (2 weeks)United States$19.5850 g95%
Combi-Blocks, Inc.United States$33.0010 g95%
AngeneChina → Hong Kong$4266.6730 mg98%

Chemical Identity

CAS35958-30-6
PubChem CID118899
DTXSIDDTXSID4038899
FormulaC30H46O2
Mol. Weight438.7 g/mol
SMILESCC(C1=C(C(=CC(=C1)C(C)(C)C)C(C)(C)C)O)C2=C(C(=CC(=C2)C(C)(C)C)C(C)(C)C)O

Data Sources

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Brief citations

Tetrabutyl ethylidenebisphenol (CAS 35958-30-6) https://chemicalindependence.com/chemical/35958-30-6/ EPA CompTox (DSSTox): DTXSID4038899. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4038899 PubChem: 118899. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/118899 EPA Chemical Data Reporting: 35958-30-6. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 35958-30-6. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290729 for CAS 35958-30-6. Reporting year: 2024. https://usatrade.census.gov/