Description

Stearyltributylphosphonium Bromide is a high-purity quaternary phosphonium salt, a critical specialty chemical for advanced material synthesis. Its primary value lies in its efficacy as a phase transfer catalyst and a versatile cationic surfactant, enabling efficient reactions in multi-phase systems. This product is essential for researchers and manufacturers in the pharmaceutical, polymer, and specialty chemical industries seeking to optimize synthesis processes and develop novel materials.

Application

• Phase Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, crucial for alkylation, esterification, and polymerization processes.
• Polymerization Initiator/Co-catalyst: Used in the synthesis of specialized polymers and resins, including epoxy curing and ring-opening polymerizations.
• Surfactant & Emulsifying Agent: Functions as a cationic surfactant in formulations requiring stable emulsions or surface modification.
• Antimicrobial Agent: Imparts biocidal properties in coatings, textiles, and material preservation due to its quaternary phosphonium structure.
• Chemical Intermediate: Serves as a key building block for synthesizing more complex phosphonium-based ionic liquids and functional materials.
• Textile & Fiber Treatment: Used as a softening agent or to provide durable antimicrobial finishes to fabrics.

Basic Information

Product Name	Stearyltributylphosphonium Bromide
CAS No.	14866-42-3
Molecular Formula	C30H64BrP
Molecular Weight	511.71 g/mol
Synonyms	Tributyl(octadecyl)phosphonium Bromide; Octadecyltributylphosphonium Bromide; STBPB; Phosphonium, tributyloctadecyl-, bromide; 1-Octadecanaminium, N,N,N-tributyl-, bromide (9CI); Tributylstearylphosphonium Bromide
EINECS	Contact for details

Quality Control

Our Stearyltributylphosphonium Bromide is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay (HPLC), identification (IR, NMR), and impurity profiling, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

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