Description

Stearyl β-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate is a high-performance, sterically hindered phenolic antioxidant. This compound is critical for preventing oxidative degradation and extending the service life of polymers and organic materials. It is an essential additive for manufacturers in the plastics, synthetic fiber, and rubber industries who require reliable thermal stabilization for their products.

Application

• Primary antioxidant for polyolefins (PP, HDPE, LDPE) to prevent thermal oxidation during processing and end-use.
• Stabilizer for engineering plastics and styrenic polymers (ABS, PS) to maintain color and mechanical properties.
• Additive in synthetic fibers and elastomers to enhance durability against heat and environmental aging.
• Used in adhesives, sealants, and hot-melt formulations to improve oxidative stability.
• Effective stabilizer in petroleum-based products like lubricants and greases.
• Provides synergistic effects when combined with other antioxidants (e.g., phosphites, thioesters) in stabilizer packages.

Basic Information

Product Name	Stearyl β-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate
CAS No.	80693-11-4
Molecular Formula	C35H62O3
Molecular Weight	530.87 g/mol
Synonyms	Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate; Irganox 1076; Antioxidant 1076; 3,5-Di-tert-butyl-4-hydroxyhydrocinnamic acid octadecyl ester; Stearyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate; Octadecyl 3-(3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)propionate; β-(3,5-Di-tert-butyl-4-hydroxyphenyl)propionic acid stearyl ester
EINECS	279-793-7

Quality Control

Our production of Stearyl β-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

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. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White crystalline powder or flakes
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	50 - 55 °C
Volatile Matter	≤ 0.5 %
Ash Content	≤ 0.1 %
Transmittance (425 nm)	≥ 95.0 %
Transmittance (500 nm)	≥ 97.0 %

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