Description

2-Methoxy-5,5-Dimethyl-1,3,2-Dioxaphosphorinane is a specialized organophosphorus compound, specifically a cyclic phosphite ester, valued for its role as a key intermediate and ligand in advanced chemical synthesis. Its primary commercial significance lies in its utility as a stabilizer and antioxidant precursor in polymer chemistry, where it helps prevent degradation. This product is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty polymer industries seeking high-purity intermediates for complex formulations.

Application

• Polymer Additive Synthesis: A crucial intermediate for producing high-performance phosphite antioxidants and stabilizers for plastics and synthetic fibers.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of novel active pharmaceutical ingredients (APIs) and prodrugs.
• Agrochemical Formulations: Used in the development of pesticides and herbicides as a stabilizing agent or a synthetic precursor.
• Ligand in Catalysis: Acts as a ligand for transition metal catalysts in asymmetric synthesis and cross-coupling reactions.
• Flame Retardant Synergist: Employed in the development of flame-retardant systems for engineering polymers.
• Research & Development: A valuable reagent for academic and industrial research in organophosphorus chemistry and material science.

Basic Information

Product Name	2-Methoxy-5,5-Dimethyl-1,3,2-Dioxaphosphorinane
CAS No.	1005-69-2
Molecular Formula	C6H13O3P
Molecular Weight	164.14 g/mol
Synonyms	2-Methoxy-5,5-dimethyl-1,3,2-dioxaphosphorinane; 5,5-Dimethyl-2-methoxy-1,3,2-dioxaphosphorinane; Dimethylpropylene Phosphite Methyl Ether; Neopentyl Glycol Methyl Phosphite; P-Methoxy-2,2-dimethyl-1,3,2-dioxaphospholane; Cyclic Neopentyl Glycol Methyl Phosphite; Phosphorous Acid, Cyclic Neopentylene Methyl Ester
EINECS	213-713-6

Quality Control

Every batch of 2-Methoxy-5,5-Dimethyl-1,3,2-Dioxaphosphorinane is manufactured and tested under a strict quality management system. Our products undergo rigorous analytical testing, including GC, NMR, and titration, to ensure compliance with exacting purity standards. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to guarantee traceability and batch-to-batch consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.4350 - 1.4450
Density (20°C)	1.10 - 1.20 g/mL

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