Description

1-Butyl-3-Methylimidazolium Hydroxide is a high-purity ionic liquid belonging to the imidazolium hydroxide family. This compound serves as a powerful, non-aqueous organic base and versatile reaction medium, offering significant advantages in synthesis where traditional inorganic bases are unsuitable. It is a critical reagent for researchers and manufacturers in advanced material science, pharmaceuticals, and green chemistry applications, particularly for catalysis and as a precursor for other ionic liquids.

Application

• As a non-aqueous, strong base catalyst in organic synthesis, including condensation and deprotonation reactions.
• Precursor for the synthesis of other 1-butyl-3-methylimidazolium (BMIM) based ionic liquids via anion exchange.
• Reaction medium or co-catalyst in biomass processing and conversion, such as cellulose dissolution.
• Electrolyte component or additive in advanced electrochemical systems and energy storage devices.
• Base catalyst in the production of fine chemicals and pharmaceutical intermediates requiring anhydrous conditions.
• Utilized in CO2 capture and separation technologies due to its reactivity with acidic gases.
• Research and development of novel catalytic processes and green chemistry methodologies.

Basic Information

Product Name	1-Butyl-3-Methylimidazolium Hydroxide
CAS No.	528818-81-7
Molecular Formula	C8H15N2O • H2O (often supplied as aqueous solution)
Molecular Weight	171.22 g/mol (Anhydrous)
Synonyms	BMIM Hydroxide; 1-Butyl-3-methylimidazolium hydroxide; 1-Butyl-3-methyl-1H-imidazol-3-ium hydroxide; Butylmethylimidazolium hydroxide; [BMIM][OH]; 1-n-Butyl-3-methylimidazolium hydroxide; Ionic Liquid [BMIM]OH
EINECS	Contact for details

Quality Control

Our 1-Butyl-3-Methylimidazolium Hydroxide is produced under stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with every shipment to support your quality assurance and regulatory needs.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC / Titration)	≥ 95.0% (as ionic liquid, aqueous solution concentration varies)
Water Content (KF)	Reported on COA
Halides (as Cl)	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
pH (in solution)	> 13

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