Description

Trioctylphosphine Sulphide is a high-purity organophosphorus compound widely utilized as a specialized ligand and extractant in advanced chemical processes. Its primary commercial value lies in its exceptional selectivity and stability, particularly in metal separation and catalyst systems. This product is essential for industries involved in hydrometallurgy, fine chemical synthesis, and the production of high-performance materials.

Application

• As a highly selective extractant for the separation and recovery of precious metals like gold, silver, and platinum group metals from complex solutions.
• As a key ligand or catalyst component in organometallic chemistry and cross-coupling reactions for pharmaceutical intermediates.
• In the purification and refining of rare earth elements and other strategic metals in hydrometallurgical processes.
• As a stabilizing agent and modifier in the synthesis of specialized nanoparticles and quantum dots.
• As an additive in lubricant formulations to provide extreme pressure and anti-wear properties.
• In analytical chemistry as a complexing agent for the spectrophotometric determination of specific metal ions.

Basic Information

Product Name	Trioctylphosphine Sulphide
CAS No.	2551-53-3
Molecular Formula	C24H51PS
Molecular Weight	402.71 g/mol
Synonyms	Trioctylphosphine sulfide; TOPS; Tri-n-octylphosphine sulfide; Phosphine sulfide, trioctyl-; Tris(octyl)phosphine sulfide; O,O,O-Trioctyl phosphorothioate; LIX 84-I (component); Cyanex 471X (related extractant)
EINECS	219-848-7

Quality Control

Our Trioctylphosphine Sulphide is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed to confirm identity, potency, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing purity (typically ≥95% by GC or HPLC), physical properties, and specific test results is provided with every shipment to support your quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (nitrogen or argon) is recommended to preserve product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Density (at 20°C)	0.89 - 0.91 g/mL
Refractive Index (n20D)	1.468 - 1.472
Water Content (KF)	≤ 0.1%

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