Description

Phosphonium CAS NO 16749-13-6 is a versatile class of organophosphorus compounds characterized by a central phosphorus atom bonded to four organic groups, forming a positively charged cation. These compounds are of significant industrial importance due to their role as key intermediates and catalysts in organic synthesis and polymer chemistry. They are essential for manufacturers and R&D facilities in the pharmaceutical, agrochemical, and specialty polymer sectors seeking efficient phase-transfer catalysts or precursors for ylide generation.

Application

• As a phase-transfer catalyst (PTC) in various organic reactions, including alkylation and polymerization.
• As a key precursor for Wittig reagents, used in the synthesis of alkenes for fine chemicals and pharmaceuticals.
• In the production of flame retardants and other functional additives for polymers and textiles.
• As an intermediate in agrochemical synthesis, particularly for certain classes of herbicides and plant growth regulators.
• In ionic liquid formulations for specialized electrochemical and separation processes.
• For surface modification agents and corrosion inhibitors in material science applications.

Basic Information

Product Name	Phosphonium
CAS No.	16749-13-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Tetrabutylphosphonium; Phosphonium, tetrabutyl-; Tetra-n-butylphosphonium; TBuP; Tetrabutylphosphonium cation; Tetrabutylphosphonium ion; Butylphosphonium, tetra-; UNII-8K040N1V8I
EINECS	240-798-2

Quality Control

Our Phosphonium products undergo rigorous quality testing to ensure compliance with industry standards and customer-specific requirements. We implement strict analytical controls, including chromatographic and spectroscopic methods, to verify identity, purity, and consistency. Certificates of Analysis (COA) detailing batch-specific results are available upon request to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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