Description

1-Butylsulfonic-3-Methylimidazolium Dihydrogen Phosphate is a specialized ionic liquid belonging to the sulfonic acid-functionalized imidazolium phosphate class. This compound is valued for its dual functionality as both a Brønsted acidic catalyst and a green, non-volatile reaction medium, offering significant advantages over traditional mineral acids and volatile organic solvents. It is primarily sought by R&D chemists and process engineers in the pharmaceutical, fine chemical, and catalysis industries for applications requiring efficient, recoverable, and environmentally benign acidic conditions.

Application

• Acid-Catalyzed Organic Synthesis: Acts as a recyclable catalyst and solvent for esterification, alkylation, and condensation reactions.
• Biomass Processing & Pretreatment: Used in the dissolution and catalytic conversion of cellulose and lignocellulosic materials into platform chemicals.
• Polymerization Catalyst: Serves as an acidic initiator or co-catalyst for the synthesis of polyesters and other polymers.
• Electrolyte Component: Investigated for use in electrochemical devices, including fuel cells and sensors, due to its proton conductivity.
• Green Chemistry & Solvent Engineering: Provides a non-volatile, tunable reaction medium to replace conventional acids and solvents in sustainable process design.
• Extraction & Separation Processes: Utilized in acidic aqueous biphasic systems for the extraction of metal ions or specific organic compounds.

Basic Information

Product Name	1-Butylsulfonic-3-Methylimidazolium Dihydrogen Phosphate
CAS No.	920537-20-8
Molecular Formula	C8H17N2O6PS
Molecular Weight	300.27 g/mol
Synonyms	1-Butylsulfonic-3-methylimidazolium dihydrogenphosphate; [BSMIM][H2PO4]; 3-Methyl-1-(4-sulfobutyl)imidazolium dihydrogen phosphate; 1-(4-Sulfobutyl)-3-methylimidazolium dihydrogen phosphate; BSMIM H2PO4; Sulfonic acid functionalized ionic liquid; Acidic ionic liquid
EINECS	Contact for details

Quality Control

Our production of 1-Butylsulfonic-3-Methylimidazolium Dihydrogen Phosphate adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity for research and industrial applications. Each lot is characterized by NMR (1H, 13C, 31P), HPLC, and titration methods to confirm identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results 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 material is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to minimize moisture uptake and decomposition.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Halide Content (Cl-)	≤ 0.1%
pH (5% aqueous solution)	1.0 - 3.0

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