Description

Tetrabutylphosphonium Toluene-4-Sulfonate is a high-purity phosphonium salt widely used as a versatile phase-transfer catalyst and ionic liquid precursor. Its value lies in its ability to facilitate reactions between reagents in immiscible phases, significantly improving yields and reaction rates in specialized organic syntheses. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and advanced materials sectors seeking efficient catalytic solutions.

Application

• Phase-Transfer Catalysis (PTC): A key catalyst for alkylation, esterification, and other nucleophilic substitution reactions in biphasic systems.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Polymer Chemistry: Serves as a catalyst or initiator in the production of specialty polymers and resins.
• Agrochemical Synthesis: Facilitates the manufacture of pesticides, herbicides, and other crop protection agents.
• Ionic Liquid Synthesis: Acts as a precursor for the preparation of task-specific ionic liquids used in separation and electrochemistry.
• Fine Chemical Production: Enables efficient synthesis of flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Product Name	Tetrabutylphosphonium Toluene-4-Sulfonate
CAS No.	116237-97-9
Molecular Formula	C₂₃H₄₃O₃PS
Molecular Weight	430.61 g/mol
Synonyms	Tetrabutylphosphonium p-Toluenesulfonate; TBPT; Phosphonium, tetrabutyl-, salt with 4-methylbenzenesulfonic acid (1:1); Tetra-n-butylphosphonium tosylate; Tetrabutylphosphonium tosylate; Tetrabutylphosphonium 4-methylbenzenesulfonate; TBAPTS
EINECS	Contact for details

Quality Control

Our Tetrabutylphosphonium Toluene-4-Sulfonate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets exacting standards for catalytic and synthetic applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to maintain stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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