Description

1,1,3-Tris(5-tert-Butyl-4-Hydroxy-2-Methylphenol)Butane is a high-performance phenolic antioxidant widely used to inhibit oxidative degradation in polymers and other sensitive materials. Its primary value lies in its exceptional ability to scavenge free radicals and provide long-term thermal stability, thereby extending the service life of finished products. This compound is essential for manufacturers in the plastics, rubber, synthetic fiber, and lubricant industries who require reliable protection against aging and embrittlement.

Application

• Polymer Stabilization: A primary antioxidant for polyolefins (PP, PE), polystyrene, ABS, and engineering plastics to prevent thermal-oxidative degradation during processing and end-use.
• Rubber Industry: Used in the production of synthetic rubbers (SBR, BR) and latex to protect against heat aging and maintain elasticity.
• Lubricants & Fuels: Acts as an antioxidant additive in industrial lubricants, greases, and transformer oils to enhance oxidative stability.
• Adhesives & Sealants: Improves the shelf life and durability of hot-melt and pressure-sensitive adhesives by preventing resin degradation.
• Synthetic Fibers: Incorporated into polyamide and polyester fibers to protect against UV and thermal-induced strength loss.
• Food Contact Materials: Suitable for use in polymer applications where regulatory compliance for indirect food contact is required (subject to specific grade and regional approvals).

Basic Information

Product Name	1,1,3-Tris(5-tert-Butyl-4-Hydroxy-2-Methylphenol)Butane
CAS No.	39283-48-2
Molecular Formula	C₄₉H₆₈O₃
Molecular Weight	705.06 g/mol
Synonyms	1,1,3-Tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane; Antioxidant 1790; Tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane; AO-1790; Butylated reaction product of p-cresol and dicyclopentadiene; Phenol, 5-tert-butyl-4-hydroxy-2-methyl-, reaction product with dicyclopentadiene; Lowinox® 1790 (SI Group); Anox® 1790 (Addivant)
EINECS	254-416-4

Quality Control

Our production of 1,1,3-Tris(5-tert-Butyl-4-Hydroxy-2-Methylphenol)Butane adheres to strict quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, melting point, and phenolic content. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing key parameters to guarantee batch-to-batch consistency and performance reliability for your formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Melting Point	221 - 225 °C
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %
Transmittance (425nm)	≥ 90 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.