Description

Tris(5-tert-Butyl-4-Hydroxy-o-Tolyl)Butane is a high-performance phenolic antioxidant widely recognized for its exceptional stabilizing properties in polymer systems. This compound is critical for preventing oxidative degradation and thermal aging, thereby significantly extending the service life and maintaining the mechanical integrity of materials. It is an essential additive for manufacturers in the plastics, rubber, and synthetic fiber industries who require reliable protection against polymer chain scission and discoloration.

Application

• Primary antioxidant for polyolefins (PP, HDPE, LDPE) to prevent thermal-oxidative degradation during processing and end-use.
• Stabilizer for engineering plastics and styrenic polymers (ABS, PS) to enhance long-term heat stability.
• Additive in synthetic rubbers and elastomers to protect against ozone cracking and aging.
• Stabilizing component in adhesives, sealants, and hot-melt formulations to ensure product consistency.
• Used in the production of food-grade polymer packaging materials where regulatory-compliant stabilization is required.
• Protective additive for lubricants and greases to inhibit oil thickening and deposit formation.
• Stabilizer in polyurethane foams and other thermoset resins.

Basic Information

Product Name	Tris(5-tert-Butyl-4-Hydroxy-o-Tolyl)Butane
CAS No.	35641-51-1
Molecular Formula	C43H60O3
Molecular Weight	648.95 g/mol
Synonyms	1,1,3-Tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane; Tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane; Antioxidant 1790; Irganox 1790; 4,4',4''-[(2,4,6-Trimethyl-1,3,5-benzenetriyl)tris(methylene)]tris[2,6-bis(1,1-dimethylethyl)phenol]; 1,1,3-Tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane; Tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane; Phenolic antioxidant 1790
EINECS	Contact for details

Quality Control

Our Tris(5-tert-Butyl-4-Hydroxy-o-Tolyl)Butane is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for industrial and specialty polymer applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	155 - 165 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %

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