Description

2-(8-Methylnonyloxy)-2,2'-Spirobi[1,3,2-Benzodioxaphosphole] is a specialized organophosphorus compound, a spirocyclic phosphite ester, valued for its role as a high-performance stabilizer and ligand in advanced chemical synthesis. Its unique molecular structure provides exceptional efficacy in protecting polymers and fine chemicals from degradation caused by heat, light, and oxidation. This product is essential for R&D chemists and process engineers in the polymer additives, specialty chemical, and pharmaceutical intermediate sectors seeking to enhance product longevity and reaction specificity.

Application

• Polymer Stabilizer: Acts as a highly effective secondary antioxidant and metal deactivator in polyolefins (e.g., PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Ligand in Catalysis: Serves as a chelating ligand in transition metal-catalyzed reactions, including cross-coupling and hydrogenation, offering potential for improved selectivity and yield in pharmaceutical and agrochemical synthesis.
• Additive for Fuels and Lubricants: Used as an antioxidant and anti-wear additive in advanced synthetic lubricants and industrial fluids to extend service life and protect machinery components.
• Stabilizer for Adhesives and Coatings: Incorporated into formulations to prevent gelation and maintain viscosity stability, ensuring consistent performance and shelf-life of high-value adhesive and coating systems.
• Intermediate for Specialty Chemicals: A key building block for synthesizing more complex phosphite and phosphate derivatives with tailored properties for niche applications.

Basic Information

Product Name	2-(8-Methylnonyloxy)-2,2'-Spirobi[1,3,2-Benzodioxaphosphole]
CAS No.	71215-99-1
Molecular Formula	C23H29O5P
Molecular Weight	416.45 g/mol
Synonyms	2-(8-Methylnonyloxy)-2,2'-spirobi[1,3,2-benzodioxaphosphole]; Spirocyclic Phosphite Ester; Bis(2,2'-spirobi[1,3,2-benzodioxaphosphol]-2-yl) ether derivative; Phosphorous acid, P,P'-(8-methylnonyl) P,P'-diphenylene ester; Antioxidant 71215-99-1; Spiro phosphite ligand; Hostanox® PAR 24 (related commercial grade).
EINECS	Contact for details

Quality Control

Our production of 2-(8-Methylnonyloxy)-2,2'-Spirobi[1,3,2-Benzodioxaphosphole] 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) detailing all critical parameters are provided with each shipment to guarantee traceability, consistency, and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and moisture. For long-term storage, consider an inert atmosphere (nitrogen blanket) to maintain optimal efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Phosphorus Content	Contact for details
Heavy Metals (as Pb)	≤ 10 ppm

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