Description

1,3,2-Dioxaphosphorinane, 5-Butyl-5-Ethyl-2-[2,4,6-Tris(1,1-Dimethylethyl)Phenoxy]- is a specialized organophosphorus compound featuring a sterically hindered phenolic group, making it a highly effective intermediate for advanced material synthesis. Its primary value lies in its role as a key precursor or additive in the development of high-performance polymers and stabilizer systems, where it imparts enhanced thermal and oxidative resistance. This chemical is essential for R&D and production teams in the polymer additives, specialty plastics, and advanced lubricant industries seeking to improve product longevity and performance under demanding conditions.

Application

• Polymer Additive Precursor: Serves as a crucial building block for synthesizing high-performance antioxidants and phosphite-based secondary stabilizers for polyolefins (PP, PE), engineering plastics, and synthetic rubbers.
• Advanced Lubricant Formulation: Used as an intermediate to create extreme pressure (EP) additives and anti-wear agents that enhance the performance and lifespan of industrial and automotive lubricants.
• Flame Retardant Synergist: Acts as a component in intumescent and halogen-free flame retardant systems for plastics and textiles, improving char formation and thermal stability.
• Specialty Chemical Intermediate: Employed in organic synthesis for pharmaceuticals and agrochemicals where its specific phosphorinane structure is required for biological activity or as a protecting group.
• Stabilizer for PVC and Other Polymers: Functions as a chelating agent and stabilizer intermediate to prevent degradation and discoloration in PVC and other halogen-containing polymers during processing.
• Catalyst Ligand: Its sterically hindered phenoxy group makes it a potential ligand for transition metal catalysts used in polymerization and cross-coupling reactions.

Basic Information

Product Name	1,3,2-Dioxaphosphorinane, 5-Butyl-5-Ethyl-2-[2,4,6-Tris(1,1-Dimethylethyl)Phenoxy]-
CAS No.	161717-32-4
Molecular Formula	C25H43O3P
Molecular Weight	422.58 g/mol
Synonyms	5-Butyl-5-ethyl-2-(2,4,6-tri-tert-butylphenoxy)-1,3,2-dioxaphosphorinane; 2-(2,4,6-Tri-tert-butylphenoxy)-5-butyl-5-ethyl-1,3,2-dioxaphosphorinane; Tris(1,1-dimethylethyl)phenol cyclic ethylene phosphite derivative; Hindered phenolic phosphite; Antioxidant intermediate 161717-32-4; Phosphite stabilizer precursor; Cyclic ethylene phosphite with tert-butylphenol
EINECS	Contact for details

Quality Control

Our production of 1,3,2-Dioxaphosphorinane, 5-Butyl-5-Ethyl-2-[2,4,6-Tris(1,1-Dimethylethyl)Phenoxy]- adheres to a stringent quality management system to ensure batch-to-batch consistency and high purity for industrial applications. Each lot is analyzed using advanced techniques including HPLC, GC, NMR, and IR spectroscopy to confirm identity and quantify impurities. A comprehensive Certificate of Analysis (COA) detailing assay, purity, and specific impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are kept tightly sealed when not in use to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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