© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: 1-Butyl-3-Methylimidazolium Bromide
Chemical Formula: C8H15BrN2
Common Uses: Research laboratories often use this compound as an ionic liquid in synthesizing new materials or as a solvent for catalysis because of its versatility and relatively low volatility compared to other organic solvents. Projects focusing on green chemistry see it as a step away from traditional, more hazardous organic solvents.
Hazard Classification: Irritant to skin, eyes, and respiratory tract. Handling large quantities without protection leads to reports of mild irritation, and skin contact can cause noticeable redness and discomfort. Inhalation of powder or mist may trigger a cough or shortness of breath.
Labeling Requirements: Strong warnings against ingesting, inhaling, or absorbing through skin must be visible where the material is stored or handled.
Environmental Hazards: Clean-up after a spill highlights its aquatic toxicity. Ecology-focused teams note the need to restrict its release from lab drains.
Main Component: 1-Butyl-3-Methylimidazolium Bromide, pure substance without significant stabilizers or added agents. Each batch shipped for research reveals minimal contamination.
Impurities: Trace levels of unreacted starting imidazole or butyl bromide sometimes show up in high-purity analyses, but they do not surpass 0.1% in properly sourced material.
Inhalation: Move the affected person outdoors into fresh air. Most people recover rapidly, but expect an irritated throat and coughing for a short period. If breathing trouble continues, prompt medical attention is best.
Skin Contact: Wash area with plenty of water and mild soap. Itching or redness can linger, but with quick action, the skin settles down.
Eye Contact: Rinse immediately under running water for many minutes. Remove contact lenses to ensure thorough cleaning.
Ingestion: Rinse mouth and drink water, do not attempt to induce vomiting due to risk of aspiration. If significant amounts are swallowed, call healthcare professionals.
Suitable Extinguishing Media: Water spray, dry chemical, or carbon dioxide extinguishers are effective. Firefighters in lab training are told to use whatever’s closest.
Specific Hazards: In a fire, toxic fumes such as nitrogen oxides, hydrogen bromide, and carbon monoxide may form. Good ventilation in storage areas helps prevent dangerous concentrations.
Protective Equipment: Standard firefighting gear and a self-contained breathing apparatus are highly recommended during a blaze. No one wants to inhale burning ionic liquid byproducts.
Personal Precautions: Immediately evacuate the area unless specially trained. Gloves, goggles, and lab coats limit direct exposure. Ventilation removes any airborne dust.
Environmental Precautions: Block off entry to waterways or drains. Secure absorbent materials and neutralize with suitable agents—practices I’ve seen emphasized in every institutional lab training.
Cleanup Methods: Scoop solid material into waste disposal containers. For residues, plenty of soap, water, and elbow grease take care of the rest. A final check ensures no slippery surface remains.
Handling: Avoid breathing dust and keep personal protective equipment on whenever dispensing or transferring the compound. Everyone appreciates clear labeling, as this helps prevent accidental mix-ups, especially on crowded chemical benches. Open bottles only inside fume hoods. Minimize spills by using proper spatulas or scoops.
Storage: Store in tightly closed containers, away from strong acids, strong bases, and oxidizing agents. A cool, dry, and well-ventilated cupboard works. Label containers with the date received and date opened to track freshness and limit degradation.
Engineering Controls: Good airflow and fume hoods control dust and vapors. Labs with high throughput automate weighing inside ventilated gloveboxes.
Personal Protection: Wear nitrile gloves, safety goggles, and lab coats every time. Using face shields reduces splash risk. People sensitive to chemical odors sometimes add respiratory protection, especially in poorly ventilated rooms.
Hygiene Measures: Wash hands thoroughly after handling, avoid eating or drinking around the chemical, and keep work surfaces clear to avoid contamination.
Appearance: White to off-white crystalline solid, sometimes with a slight yellowish hue depending on storage conditions.
Odor: Odorless to faintly amine-like.
Melting Point: Around 70–80°C. Not likely to sublimate at room temperature, so material stays put under normal storage.
Solubility: Highly soluble in water and polar solvents. Lab partners often mention its easy dissolution when preparing solutions.
Density: 1.2–1.3 g/cm³.
Chemical Stability: Stable at ambient temperatures if protected from light and moisture. Over time, light exposure slowly degrades the compound and forms yellowish byproducts.
Incompatible Materials: Strong oxidizers, strong acids, and alkali metals cause decomposition.
Hazardous Decomposition Products: Reactivity under heat or fire gives off nitrogen oxides, hydrogen bromide, and carbon-containing gases. Container labeling helps minimize mistaken entries into incompatibility territory.
Routes of Exposure: Inhalation, skin, and eyes present main exposure risks in laboratory use. Toxicity studies on animals and limited human case data point to irritation symptoms at low doses, and more severe effects at high exposure.
Possible Effects: Short-term exposure irritates mucous membranes and skin. Prolonged exposure not common in routine use, but chronic contact could lead to dermatitis.
Carcinogenicity: Current animal test data show no significant evidence of carcinogenicity, but safety data sheets consistently recommend minimizing exposure as a safeguard.
Aquatic Toxicity: While not acutely toxic like some industrial chemicals, its ionic nature can disrupt aquatic organisms' balance, especially at higher concentrations. Recent studies flag increased persistence in water.
Persistence and Degradability: This compound breaks down slowly in natural settings. Researchers emphasize responsible disposal to keep it out of the wastewater stream.
Bioaccumulation: Data on long-term buildup in living organisms remains limited, so regulations err on the side of caution.
Waste Treatment Methods: Place waste material in containers clearly labeled for hazardous organic compounds. Most facilities incinerate it or send it to licensed hazardous waste processors, and pour-down-the-drain disposal is forbidden. Following standard procedures helps avoid run-ins with campus safety officers.
Contaminated Packaging: Triple-rinse and dispose of following institutional guidelines for hazardous chemical waste.
UN Number: Not assigned universally. Most shipments handled under laboratory small-quantity rules rather than as bulk commodities.
Transport Hazard Class: Not classified as flammable or explosive, but sensible packaging and containment prevent accidental release.
Precautions: Secure in well-sealed, labeled containers. Anyone moving it in bulk uses UN-approved packaging to avoid leaks.
Global Standards: Many safety agencies list the compound as hazardous due to its irritant effects and aquatic toxicity. U.S. OSHA recognizes 1-Butyl-3-Methylimidazolium Bromide under general laboratory safety rules.
Personal Responsibility: Institutions encourage users to review their regional chemical safety and environmental rules before ordering or using this product.
Local Policies: University labs often develop more restrictive rules for handling and disposal, prioritizing worker safety and environmental stewardship beyond what national regulations require.
