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4-{[4,6-Bis(octylsulfanyl)-1,3,5-triazin-2-yl]amino}-2,6-di-tert-butylphenol

CAS 991-84-4

EPA’s 2023 records show zero U.S. production of this chemical.

Molecular structure of 991-84-4
US productionZero
Import value, 2024$309M
Import volumeCBI
Top sourceChina 40%

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. 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 293369 · basket

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

These shares come from HS customs code 293369, which covers 192 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany
Domestic parents -- activity not disclosed (1)
Colonial Group
EPA-registered importers (6)
Basf Se · DE Germany
Songwon Industrial · KR South Korea
Basf
Dexco Polymers
Mayzo
Show all 6
Songwon

Why It Matters

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

Industrial Uses

Used in 2 sectors as 1 functional role.

  • •Antioxidant in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Adhesive Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.75/gAaron Chemicals LLC
CountryHong Kong
Pack$375.00 / 500 g
Purity95%
Vendors16 available

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

15 more vendors
VendorCountry$/gPackPurity
AK Scientific SpecializedUnited States$0.84500 g95%
AK Scientific, Inc.United States$0.84500 g98%
Combi-Blocks, Inc.United States$0.84500 g98%
Angene ChemicalChina → Hong Kong$0.86500 g95%
A2B Chem LLCUnited States$0.90500 g95%
BLD Pharmatech Ltd.China$0.961 kg95%
AA BLOCKSUnited States$1.08500 g95%
Angene International LimitedUnited States$1.36500 g95%
BLD Pharmatech Co., LimitedUnited States$1.50100 g95%
BLD Pharmatech GmbHGermany$1.50100 g95%
Ambeed, Inc.United States$1.50100 g95%
SynthonixUnited States$7.005 g95%
AstaTech (2 weeks)United States$8.48100 g95%
MedChemExpress MCESweden$9.925 g98.14%
AngeneChina → Hong Kong$4266.6730 mg95%

Chemical Identity

CAS991-84-4
PubChem CID70431
DTXSIDDTXSID1052662
FormulaC33H56N4OS2
Mol. Weight589 g/mol
SMILESCCCCCCCCSC1=NC(=NC(=N1)NC2=CC(=C(C(=C2)C(C)(C)C)O)C(C)(C)C)SCCCCCCCC

Data Sources

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Brief citations

4-{[4,6-Bis(octylsulfanyl)-1,3,5-triazin-2-yl]amino}-2,6-di-tert-butylphenol (CAS 991-84-4) https://chemicalindependence.com/chemical/991-84-4/ EPA CompTox (DSSTox): DTXSID1052662. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1052662 PubChem: 70431. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/70431 EPA Chemical Data Reporting: 991-84-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 991-84-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293369 for CAS 991-84-4. Reporting year: 2024. https://usatrade.census.gov/