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2-(2-Hydroxy-3,5-di-tert-pentylphenyl)benzotriazole

CAS 25973-55-1

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

Molecular structure of 25973-55-1
US productionCBI
Import value, 2024$1.4B
Top sourceIreland 33%

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. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293399 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

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
IE 33%IrelandCN 26%ChinaIN 11%IndiaDE 9%GermanyIT 4%Italy
Domestic parents -- activity not disclosed (2)
Everlight Usa
Si Group
EPA-registered importers (7)
Basf Se · DE Germany
Songwon Industrial · KR South Korea
Aalborz Chemical
Avient
Basf
Show all 7
Mayzo
Songwon

Why It Matters

Sectors
ConstructionPlastics & RubberPaints & Coatings
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 5 sectors as 5 functional roles.

  • •Surface modifier in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Absorbent in Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •UV stabilizer in Paint and Coating Manufacturing (100%)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 Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •UV stabilizer in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Synthetic Rubber Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Adhesive Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Stabilizing agent in Plastics Material and Resin Manufacturing (100%)Use—non-incorporative activities
  • •UV stabilizer in Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.05/gAaron Chemicals LLC
CountryHong Kong
Pack$24.00 / 500 g
Purity98%
Vendors16 available

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

15 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.06500 g98%
A2B Chem LLCUnited States$0.10500 g98%
AA BLOCKSUnited States$0.13500 g98%
AK Scientific SpecializedUnited States$0.53100 g95%
AstaTech, IncUnited States$0.6425 g95%
AK Scientific, Inc.United States$0.71100 g98%
Combi-Blocks, Inc.United States$1.20500 g98%
Angene International LimitedUnited States$1.45100 g98%
Labotest KGGermany$217.805000 mg90%
ChemBridge CorporationKazakhstan$1860.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg98%
Princeton BioMolecular Research (SC)United States$8000.0015 mg90%
InterbioscreenHong Kong$8464.0050 mg95%
Vitas M Chemical LimitedHong Kong$9000.0010 mg90%
ChemDiv, Inc.United States$35000.002 mg90%

Chemical Identity

CAS25973-55-1
PubChem CID33263
DTXSIDDTXSID2027886
FormulaC22H29N3O
Mol. Weight351.5 g/mol
SMILESCCC(C)(C)C1=CC(=C(C(=C1)N2N=C3C=CC=CC3=N2)O)C(C)(C)CC

Data Sources

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Brief citations

2-(2-Hydroxy-3,5-di-tert-pentylphenyl)benzotriazole (CAS 25973-55-1) https://chemicalindependence.com/chemical/25973-55-1/ EPA CompTox (DSSTox): DTXSID2027886. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2027886 PubChem: 33263. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/33263 EPA Chemical Data Reporting: 25973-55-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 25973-55-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293399 for CAS 25973-55-1. Reporting year: 2024. https://usatrade.census.gov/