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Bis(1,2,2,6,6-pentamethyl-4-piperidyl) ((3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methyl)butylmalonate

CAS 63843-89-0

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

Molecular structure of 63843-89-0
US productionZero
Import value, 2024$1.3B
Import volumeCBI
Top sourceChina 32%

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 293339 · basket

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

These shares come from HS customs code 293339, which covers 397 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 32%ChinaIN 15%IndiaDE 10%GermanyBE 9%BelgiumCH 8%Switzerland
EPA-registered importers (5)
Basf Se · DE Germany
Songwon Industrial · KR South Korea
Aalborz Chemical
Basf
Songwon

Why It Matters

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

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •Stabilizing agent in Paint and Coating Manufacturing (100%)Processing—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 Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.15/gAaron Chemicals LLC
CountryHong Kong
Pack$75.00 / 500 g
Purity98%
Vendors8 available

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

7 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.18500 g98%
Combi-Blocks, Inc.United States$0.60500 g98%
Ambeed, Inc.United States$1.6025 g97%
A2B Chem LLCUnited States$2.0425 g98%
AA BLOCKSUnited States$2.2025 g98%
Angene International LimitedUnited States$10.4025 g98%
AngeneChina → Hong Kong$4266.6730 mg98%

Chemical Identity

CAS63843-89-0
PubChem CID93348
DTXSIDDTXSID1070014
FormulaC42H72N2O5
Mol. Weight685 g/mol
SMILESCCCCC(CC1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C)(C(=O)OC2CC(N(C(C2)(C)C)C)(C)C)C(=O)OC3CC(N(C(C3)(C)C)C)(C)C

Data Sources

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Brief citations

Bis(1,2,2,6,6-pentamethyl-4-piperidyl) ((3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methyl)butylmalonate (CAS 63843-89-0) https://chemicalindependence.com/chemical/63843-89-0/ EPA CompTox (DSSTox): DTXSID1070014. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1070014 PubChem: 93348. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/93348 EPA Chemical Data Reporting: 63843-89-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 63843-89-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293339 for CAS 63843-89-0. Reporting year: 2024. https://usatrade.census.gov/