Description

Diisopropyl Methylphosphonite is a specialized organophosphorus compound, CAS NO 66295-44-1, valued for its role as a key intermediate in the synthesis of complex phosphorus-containing molecules. Its primary commercial significance lies in its reactivity as a phosphonite ligand and building block for agrochemicals, pharmaceuticals, and flame retardants. This chemical is essential for manufacturers and R&D laboratories in the fine chemical, crop protection, and material science sectors seeking to develop advanced functional materials.

Application

• Key intermediate in the synthesis of organophosphorus agrochemicals, including insecticides and herbicides.
• Precursor for pharmaceutical active ingredients and novel drug candidates.
• Building block for flame retardants and polymer additives.
• Ligand in catalysis and metal complex formation for chemical synthesis.
• Intermediate for lubricant additives and extreme pressure agents.
• Research and development of new organic electronic materials.
• Production of specialty surfactants and surface modifiers.

Basic Information

Product Name	Diisopropyl Methylphosphonite
CAS No.	66295-44-1
Molecular Formula	C7H17O2P
Molecular Weight	164.18 g/mol
Synonyms	Methyldiisopropoxyphosphine; Diisopropyl Methanephosphonite; Methylphosphonic Acid Diisopropyl Ester; Phosphonous Acid, Methyl-, Diisopropyl Ester; Diisopropyl Methylphosphonite; P-Methyl-P,P-diisopropylphosphonite
EINECS	Contact for details

Quality Control

Our Diisopropyl Methylphosphonite is manufactured under stringent quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area. Due to its hygroscopic and easily oxidized nature, the container must be kept tightly sealed after each use to exclude moisture and air. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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