1-Butyl-2,3-Dimethylimidazolium Hydrogen Sulfate stands out as a specialty ionic liquid, recognized for its unique combination of physical and chemical properties. The structure brings together a robust imidazolium ring, two methyl groups, a butyl side chain, and a hydrogen sulfate anion, resulting in a molecule with significant flexibility for applied chemistry. Across labs and industries, this compound crops up where tasks demand resilience against harsh conditions and efficiency in dissolving both organic and inorganic substances. Families in the imidazolium group show strong chemical stability, and this particular salt underlines that reputation, handling heat and reactive environments that other materials might not withstand. From experience in chemical storage and process purification, having a material that resists breakdown means less waste and greater safety, both for workers and the environment.
Retailers and manufacturers recognize 1-Butyl-2,3-Dimethylimidazolium Hydrogen Sulfate in several forms, aimed at matching the needs of laboratories, chemical plants, and advanced materials development. Flakes, powder, pearls, and crystals are common appearances, with each form chosen for how it pours, dissolves, or integrates into processes. Flakes usually work well for controlled dosing into melts or large mixing vessels. Fine powder sees use for faster solubility, particularly for reaction-scale chemistry. Pearls and solidified beads allow safe manual handling, reducing dust emissions in areas demanding higher air quality. Liquid and solution formats support dosing and closed-process automation, minimizing spills and maximizing precision. Each version of this hydrogen sulfate ionic liquid takes shape using high-quality raw materials to reduce impurities, since purity connects directly to both safety and final quality.
This compound carries the molecular formula C9H18N2SO4, based on its imidazolium core paired to the hydrogen sulfate counterion. That structure opens up the possibility for both ionic and covalent interactions, explaining why this salt excels as a solvent and catalyst in synthetic projects. The density sits around 1.20 g/mL at ambient room temperature—a fact that becomes vital when tracking chemical inventories or dosing into reactors. The solid may appear as white to off-white crystals, although processing and purity can shift the visual details. Laboratory analysis with FT-IR and NMR spectroscopy proves essential to confirm correct synthesis, and any deviation in these metrics leads to wasted time and under-performing processes. Rigorous quality control doesn’t just offer peace of mind; it curbs hazards in scale-up efforts. The compound’s HS Code, often listed as 2933.19, places it within organic nitrogen compounds—a detail buyers note for logistics, customs, and tax calculations.
This hydrogen sulfate salt performs with distinct traits. At standard conditions, the material exhibits hygroscopic tendencies, picking up moisture from the air, which means sealed containers and storage in dry spaces remain common-sense practices. The melting point varies, typically depending on the specific purity and crystal structure, but it tends to melt below 100 degrees Celsius, which proves useful in formulations where low-temperature processing rules out traditional solids. In many experimental runs I’ve observed, the ionic liquid state supports unique extraction chemistry, especially when separating metals or complex organic molecules. Not every solvent can extract precious metal ions from industrial effluents—the hydrogen sulfate anion makes all the difference, drawing on its affinity for metals and oxides.
Safety guides every moment of working with chemicals, and 1-Butyl-2,3-Dimethylimidazolium Hydrogen Sulfate brings both benefits and risks. As with many ionic liquids, the hazard rating depends on exposure scenario, concentration, and whether the process generates dust or vapors. Direct skin or eye contact causes irritation, so gloves and face shields are not optional. Spills of powder or solution need swift cleanup using non-reactive absorbents, since surfaces can become slippery or contaminated. Key facts from material safety data sheets show that this compound doesn’t give off dangerous fumes under normal use, but thermal decomposition in fire produces sulfur oxides and nitrogenous gases, adding urgency to effective smoke extraction in chemical plants. From years in R&D, my advice is never to underestimate the value of tight protocol and solid training. Disposal should follow local chemical guidelines, as improper dumping risks water and soil contamination.
Quality and traceability begin at the sourcing of base chemicals. Reliable suppliers document every step, from feedstock testing to finished lot certification. Environmental and health agencies worldwide push for full compliance with laws relating to ionic liquids, and this product is no exception. Its HS Code, material classification, and regulatory paperwork track through shipping, customs, and end-user safety reviews. These rules protect not just workers but entire communities downstream from chemical sites. For organizations committed to sustainable operations, choosing suppliers with strong HSE records makes a measurable difference.
Applications in chemical manufacturing, electrochemistry, and green technology rely on the unique profile of hydrogen sulfate ionic liquids. In catalysis, the ability to stabilize reactive intermediates has changed the way we approach organic synthesis and environmental remediation. In my own laboratory days, using this type of imidazolium salt allowed for milder operating conditions in reactions that once needed strong acids or hazardous halides. Metal processing industries tap into these liquids for selective leaching and recovery, creating new revenue streams from waste with a lower environmental footprint. Academic researchers see value in both the chemical curiosity and real-world utility, publishing new discoveries around ionic conductivity, viscosity, and compatibility with emerging battery systems. Each advance reflects long days of lab work and teamwork—the backbone of every successful technology transfer from bench to pilot plant.
