Description

Bis[3(4-Oxy-3,5-Ditertiarybutylphenyl)Propyl]Phthalate is a high-performance phenolic antioxidant and plasticizer, specifically engineered to provide superior thermal and oxidative stability to polymer systems. Its molecular structure is designed to effectively inhibit degradation, thereby extending the service life and maintaining the physical properties of sensitive materials under demanding conditions. This compound is essential for manufacturers in the polymer, rubber, and specialty chemical industries seeking to enhance the durability and performance of their high-value products.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., PP, PE) and engineering plastics.
• Key additive in synthetic rubber and elastomer formulations to prevent thermal aging.
• Stabilizing agent for adhesives, sealants, and polymer coatings to improve weatherability.
• Performance additive in lubricant and grease formulations to reduce oxidative thickening.
• Used in wire and cable insulation compounds to enhance long-term thermal endurance.
• Stabilizer for thermoplastic polyurethanes (TPU) and other condensation polymers.

Basic Information

Product Name	Bis[3(4-Oxy-3,5-Ditertiarybutylphenyl)Propyl]Phthalate
CAS No.	99677-37-9
Molecular Formula	C48H62O6
Molecular Weight	734.99 g/mol
Synonyms	Bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl] Phthalate; Phthalic Acid Bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl] Ester; Antioxidant 626; Irganox 626; Anox 626; Lowinox 626; Bis(3,5-di-tert-butyl-4-hydroxybenzyl) Phthalate (common misnomer); 1,2-Benzenedicarboxylic Acid, Bis[3-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]propyl] Ester (IUPAC)
EINECS	Contact for details

Quality Control

Our production of Bis[3(4-Oxy-3,5-Ditertiarybutylphenyl)Propyl]Phthalate adheres to stringent quality management protocols. Every batch is subjected to comprehensive analytical testing, including assay, melting point, and impurity profile analysis, to ensure it meets the high-purity standards required for polymer stabilization. Certificates of Analysis (COA) documenting full specifications are provided with each shipment to guarantee traceability and compliance with your technical requirements.

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 to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	100 - 110 °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.