Irganox 259 Antioxidant
Irganox 259 is the commercial name for 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate, a high-performance hindered phenolic antioxidant used to prevent oxidative degradation in polymers. It falls under HTS 2918.29.06.00 as a specific carboxylic acid with phenol function and additional oxygen functionality, classified by its precise chemical structure in Chapter 29 for separate chemically defined organic compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with other stabilizers at >20% concentration
Blends of chemical additives like polymer stabilizer packages are classified as chemical preparations in 3824 rather than pure compounds.
If imported as a solution in organic solvent for safety transport
Chapter 29 note (e) allows solutions for safety/transport, but if solvent renders it suitable for specific use, it may shift to heterocyclic compounds or preparations.
If when explicitly labeled and sold as goods for retail plastic stabilization
Certain chemical goods specified in Chapter 38 for retail use as plastic additives may take precedence over pure compound classification.
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Import Tips & Compliance
• Provide detailed chemical analysis certificates (COA) confirming the exact composition matches the HTS description to avoid reclassification
• Include Safety Data Sheets (SDS) and stabilizer declarations as per Chapter 29 note (f) for preservatives added during transport
• Verify purity levels (>98% typical for Irganox 259) to prevent misclassification as mixtures under different headings
Related Products under HTS 2918.29.06.00
Songnox 259 Polymer Stabilizer
Songnox 259 is 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate supplied as white powder or flakes for stabilizing polypropylene and polyethylene against thermal oxidation. Classified under HTS 2918.29.06.00 due to its carboxylic acid with phenol function structure, fitting Chapter 29's scope for chemically defined organic compounds with oxygen functions.
ADK Stab AO-259 Antioxidant
ADK Stab AO-259, chemically 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate, serves as a primary antioxidant in engineering plastics like nylon and polyester for long-term heat stability. It is specifically named in HTS 2918.29.06.00 under carboxylic acids with phenol function, as a chemically defined compound per Chapter 29 notes.
Lowinox 259B Polymer Antioxidant
Lowinox 259B is the beaded form of 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate, designed for easy handling in polyolefin extrusion processes. Falls under HTS 2918.29.06.00 as the named carboxylic acid derivative with phenol and alcohol functions, classified as a pure organic compound in Chapter 29.
Hexanediol Bisphenol Propionate Stabilizer 2918
Technical-grade 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate used in wire/cable insulation compounds for electrical stability. Precisely matches HTS 2918.29.06.00 description as a phenolic carboxylic acid derivative with defined structure.