Description

Hexamethylene Bis[3-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate] is a high-performance, sterically hindered phenolic antioxidant widely recognized for its excellent thermal stability and low volatility. This compound is critical for preventing oxidative degradation and extending the service life of polymers and other sensitive materials. It is an essential additive for manufacturers in the plastics, synthetic fiber, and rubber industries who require reliable long-term stabilization for their products under demanding processing and end-use conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic fibers to prevent thermal-oxidative degradation during processing and in-service.
• Rubber Industry: Protects synthetic rubbers (SBR, BR, NBR) and latex from aging, maintaining elasticity and mechanical properties.
• Adhesives & Sealants: Enhances the shelf-life and durability of hot-melt adhesives, pressure-sensitive adhesives, and construction sealants.
• Lubricants & Fuels: Used as an antioxidant additive in industrial lubricants, greases, and fuels to inhibit sludge formation and viscosity increase.
• Elastomers & Thermoplastic Elastomers (TPE): Provides stabilization for products like EPDM, TPO, and TPV used in automotive and construction applications.
• Masterbatch Production: A key active component in antioxidant and additive masterbatches for simplified and uniform dispersion in polymer matrices.

Basic Information

Product Name	Hexamethylene Bis[3-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate]
CAS No.	35074-77-2
Molecular Formula	C40H62O6
Molecular Weight	638.92 g/mol
Synonyms	Hexamethylene 3,3'-Thiodipropionate; Antioxidant 1035; Irganox 1035; Bis(3,5-di-tert-butyl-4-hydroxyphenyl)propionate; 1,6-Hexanediol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]; Pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) (related compound); Phenolic antioxidant 1035; Low volatility phenolic antioxidant.
EINECS	Contact for details

Quality Control

Our production of Hexamethylene Bis[3-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including assay, melting point, and impurity profile analysis, to ensure it meets precise specifications for high-performance antioxidant applications. Certificates of Analysis (COA) documenting purity and key physical-chemical parameters are 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). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	50 - 55 °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.