Description

Tri-n-Hexylphosphine Oxide/Tri-n-Octylphosphine Oxide is a high-purity organophosphorus compound primarily used as a versatile extraction agent and catalyst ligand. Its value lies in its excellent solvating properties and stability, making it a critical component in advanced separation and synthesis processes. This product is essential for industries including rare earth element (REE) hydrometallurgy, nuclear fuel reprocessing, and specialty chemical manufacturing where selective metal ion extraction is required.

Application

• Solvent Extraction in Hydrometallurgy: A key extractant for the separation and purification of rare earth elements (REEs), actinides, and other valuable metals from complex ores and solutions.
• Nuclear Fuel Cycle Processing: Used in the PUREX and related processes for the selective extraction and recovery of uranium, plutonium, and other transuranic elements from spent nuclear fuel.
• Catalyst Ligand in Organic Synthesis: Serves as a stabilizing ligand in transition metal catalysis for cross-coupling reactions, hydrogenation, and hydroformylation.
• Ion-Selective Electrodes & Sensors: Incorporated into polymer membranes as an ionophore for creating sensors with high selectivity for specific metal ions.
• Specialty Chemical Intermediate: Utilized in the synthesis of more complex organophosphorus compounds for various industrial and research applications.
• Analytical Chemistry: Employed in liquid-liquid extraction techniques for the pre-concentration and separation of trace metal ions prior to analysis by ICP-MS or AAS.

Basic Information

Product Name	Tri-n-Hexylphosphine Oxide/Tri-n-Octylphosphine Oxide
CAS No.	100786-00-3
Molecular Formula	C18H39OP / C24H51OP
Molecular Weight	302.48 g/mol / 386.64 g/mol
Synonyms	Trihexylphosphine Oxide; Trioctylphosphine Oxide; TOPO; THPO; TnHPO; TnOPO; Phosphine Oxide, Trihexyl-; Phosphine Oxide, Trioctyl-; Tri-n-hexylphosphane Oxide; Tri-n-octylphosphane Oxide; Cyanex 921 (Trade Name); TOPS (Trade Name); Extractant P-507 (Related Mixture)
EINECS	Contact for details

Quality Control

Our Tri-n-Hexylphosphine Oxide/Tri-n-Octylphosphine Oxide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of nuclear and high-tech material industries. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are available upon request.

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.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Total Phosphine Oxide Content)
Water Content (KF)	≤ 0.5% w/w
Acid Value	≤ 1.0 mg KOH/g
Melting Point (THPO)	45 - 55 °C
Refractive Index (TOPO)	1.452 - 1.456 @ 20°C

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