Description

Tetrabutylammonium Hydrogen Sulphite is a quaternary ammonium salt with a hydrogen sulphite counterion, valued for its dual functionality as a phase-transfer catalyst and a source of sulphite ions. This compound is particularly significant in organic synthesis for facilitating reactions between reagents in immiscible phases and for its role as a mild reducing agent or nucleophile. It is a critical reagent for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical sectors seeking efficient and selective synthetic pathways.

Application

• Phase-Transfer Catalyst (PTC): Enables reactions between ionic reagents in aqueous phases and organic substrates in organic solvents, improving yield and reaction rate.
• Organic Synthesis: Used in alkylation, esterification, and polymerization reactions where its sulphite ion can act as a nucleophile or reducing agent.
• Polymer Industry: Serves as a catalyst or additive in the production of specialty polymers and resins.
• Pharmaceutical Intermediates: Facilitates the synthesis of complex drug molecules, particularly in steps requiring sulphonation or reduction.
• Analytical Chemistry: Employed as an ion-pairing agent in chromatography to improve the separation of ionic compounds.
• Electroplating & Surface Treatment: Acts as an additive in plating baths to modify deposit properties and improve process efficiency.

Basic Information

Product Name	Tetrabutylammonium Hydrogen Sulphite
CAS No.	87742-13-0
Molecular Formula	C16H37NO3S
Molecular Weight	323.54 g/mol
Synonyms	Tetrabutylammonium Bisulfite; TBABHS; Tetra-n-butylammonium Hydrogen Sulfite; N,N,N-Tributyl-1-butanaminium Hydrogen Sulfite; Tetrabutylammonium Acid Sulfite; Tetrabutylazanium Hydrogen Sulfite; Tetrabutylammonium Sulphoxylate; TBA Hydrogen Sulphite
EINECS	Contact for details

Quality Control

Our Tetrabutylammonium Hydrogen Sulphite is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including assay, identification, and impurity profiling, to ensure it meets high-purity standards suitable for research and industrial applications. A Certificate of Analysis (COA) detailing specific results for purity, moisture content, and other critical parameters 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can compromise product quality and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
Heavy Metals (as Pb)	≤ 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.