Description

Methyldioctylphosphine Oxide is a versatile organophosphorus compound widely used as an extractant and phase transfer catalyst. Its unique structure provides excellent selectivity for separating and purifying valuable metals in hydrometallurgical processes. This high-performance chemical is essential for manufacturers and researchers in the mining, nuclear fuel reprocessing, and specialty chemical synthesis sectors seeking efficient separation solutions.

Application

• Primary extractant for the solvent extraction of rare earth elements (REEs), including lanthanides, yttrium, and scandium.
• Key reagent in the reprocessing of nuclear fuel for the separation of uranium and plutonium.
• Used as a phase transfer catalyst (PTC) in organic synthesis reactions to facilitate inter-phase reactant transfer.
• Extraction and purification of precious metals like gold and platinum group metals from complex matrices.
• Separation of transition metals such as cobalt, nickel, and zinc in hydrometallurgical applications.
• Component in specialty surfactant formulations and as a stabilizer in polymer production.
• Research and development of novel separation membranes and advanced material science.

Basic Information

Product Name	Methyldioctylphosphine Oxide
CAS No.	53521-34-9
Molecular Formula	C₁₇H₃₇OP
Molecular Weight	288.45 g/mol
Synonyms	Methyl-di-n-octylphosphine Oxide; MDOPO; Dioctylmethylphosphine Oxide; Phosphine Oxide, methylbis(octyl)-; Methyl(dioctyl)phosphine oxide; Octylmethylphosphine oxide; P,P-Dioctyl-P-methylphosphine oxide; Methyl-di-octylphosphine oxide
EINECS	Contact for details

Quality Control

Our Methyldioctylphosphine Oxide is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

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 material is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent oxidation and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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