Description

4,4'-(2,4,8,10-Tetraoxaspiro[5.5]Undecane-3,9-Diyl)Bis[2,6-Di-tert-Butylphenol] is a high-performance hindered phenolic antioxidant, valued for its ability to inhibit oxidative degradation in a wide range of polymer systems. Its unique spirocyclic structure provides excellent compatibility and low volatility, ensuring long-term stability and protection. This compound is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking to enhance the durability and lifespan of their products.

Application

• Primary antioxidant for polyolefins (PP, HDPE, LDPE) to prevent thermal and oxidative degradation during processing and service life.
• Stabilizer for engineering plastics and elastomers, including ABS, polystyrene, and synthetic rubbers.
• Additive in adhesives and sealants to maintain performance and prevent embrittlement.
• Stabilizing component in lubricants and greases to extend operational life under high-temperature conditions.
• Used in the formulation of polymer masterbatches and concentrates for efficient dispersion.
• Protective agent for synthetic fibers to improve resistance to heat and light exposure.
• Intermediate in the synthesis of other specialty hindered phenol antioxidants with tailored properties.

Basic Information

Product Name	4,4'-(2,4,8,10-Tetraoxaspiro[5.5]Undecane-3,9-Diyl)Bis[2,6-Di-tert-Butylphenol]
CAS No.	41715-24-6
Molecular Formula	C₃₉H₆₀O₆
Molecular Weight	636.89 g/mol
Synonyms	Spirocyclic Phenolic Antioxidant; 2,2'-[[3,9-Bis(3,5-di-tert-butyl-4-hydroxyphenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane]]; AO-80; Antioxidant AO-80; Sumilizer GA-80; Spiro Antioxidant; Phenol, 4,4'-(2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diyl)bis[2,6-bis(1,1-dimethylethyl)-]; 3,9-Bis[2-(3,5-di-tert-butyl-4-hydroxyphenyl)ethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane
EINECS	Contact for details

Quality Control

Our production of 4,4'-(2,4,8,10-Tetraoxaspiro[5.5]Undecane-3,9-Diyl)Bis[2,6-Di-tert-Butylphenol] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry benchmarks. Certificates of Analysis (COA) documenting all critical quality attributes are provided with each shipment and are available upon request.

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; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) in the container headspace is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	110 - 125 °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.