© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: 1-Ethylpyridinium Bromide
Common Names: No widely established alternative names
Chemical Formula: C7H10BrN
Physical Appearance: Generally appears as a white to off-white powder or crystalline solid.
Use: Used in academic labs, chemical synthesis, ionic liquid research, and as a phase transfer catalyst in organic reactions.
Odor: Reports from lab settings describe a faint, amine-like scent.
Solubility: Soluble in water and polar solvents, facilitating handling in most lab applications.
Physical Hazards: Not flammable under normal laboratory conditions.
Health Hazards: May irritate eyes, skin, and respiratory tract. Inhalation of dust could trigger headaches, coughing, or mild respiratory distress. Prolonged skin contact sometimes leads to dryness or mild inflammation. Accidental ingestion can cause nausea or abdominal discomfort.
Environmental Hazards: Not known to pose a high risk to waterways, but best to avoid introducing to drains as long-term effects on aquatic life remain poorly studied.
Signal Word: Warning—this is typical language found in a laboratory manual because large quantities or unsafe conditions raise the risk of exposure.
Main Ingredient: 1-Ethylpyridinium Bromide — over 98% purity in most research-grade bottles.
Impurities: Trace levels of related pyridinium salts may be present depending on synthesis route; unlikely to exceed 2%.
Additives: Not typically found in analytical or laboratory grades.
Inhalation: Move affected individual outdoors or to a well-ventilated space. Provide fresh air. Rest recommended if coughing or headache occurs. Medical attention suggested for persistent discomfort.
Skin Contact: Remove contaminated clothing. Wash skin with soap and plenty of water for several minutes. Irritation seldom persists, but monitoring for redness or sensation changes is wise.
Eye Contact: Rinse eyes gently with running water, keeping eyelids apart. Continue for at least 15 minutes. Check for lingering irritation or vision changes.
Ingestion: Rinse mouth thoroughly if ingested unintentionally; drink water to dilute. Try to avoid vomiting unless directed by a health professional. Seek help if symptoms show up.
Extinguishing Media: Common extinguishers like water spray, foam, dry chemical, or carbon dioxide can control fires involving this salt.
Hazardous Combustion Products: Heating to decomposition can release toxic fumes of nitrogen oxides, carbon oxides, and hydrogen bromide.
Protective Equipment for Firefighters: Wear self-contained breathing apparatus and protective gear to dodge hazardous breakdown products.
Fire Hazards: The material does not support combustion, but containers could rupture if exposed to intense heat, so keeping containers out of fire-prone locations makes sense.
Personal Precautions: Wear gloves, safety glasses, and a dust mask or respirator. Avoid raising dust in the air.
Spill Containment: Sweep up spilled material with care. Dampening with water can help limit airborne particles.
Disposal: Place residue in a sealed, labeled waste container. Avoid discharging into sinks or storm drains.
Decontamination: Clean affected area with soap and water; proper ventilation helps disperse any fine particulates in lab spaces.
Handling: Use in a chemical fume hood or well-ventilated place. Minimize dust generation, and keep containers securely closed between uses. Wear protective eyewear and gloves—nitrile types withstand exposure best based on chemical compatibility charts.
Storage: Store in a tightly sealed container away from moisture, heat sources, strong acids, or oxidizers. Keep at room temperature, and avoid direct sunlight to reduce decomposition risk.
Engineering Controls: Employ fume hoods or local exhaust to keep airborne dust below nuisance levels.
Eye Protection: Chemical splash goggles or safety glasses should be standard.
Skin Protection: Nitrile or PVC gloves; lab coats provide a basic barrier.
Respiratory Protection: Dust masks or respirators recommended, especially for larger scale work.
Hygiene: Wash hands thoroughly after handling. Do not eat or drink in areas where the chemical is present.
Appearance: White solid or crystalline powder.
Odor: Faint, comparable to other pyridinium compounds.
Melting Point: Typically near 180–185°C, with possible variation by sample purity.
Boiling Point: Decomposes rather than boils, so no classic boiling point.
Solubility: Readily mixes with water and some polar organics.
Density: Near 1.6–1.8 g/cm3, comparable to other ionic salts of this type.
pH: In water, solutions remain mildly acidic to neutral, though high concentrations could lower pH.
Chemical Stability: Stable under normal storage and handling conditions.
Conditions to Avoid: Exposure to excess moisture or elevated temperatures could drive breakdown or clumping.
Incompatible Materials: Strong oxidizers or acids can cause hazardous reactions.
Hazardous Decomposition Products: Heating can produce nitrogen oxides, carbon dioxide, and hydrogen bromide, all of which are toxic in closed settings.
Acute Effects: Eye, skin, and respiratory irritation most often reported in published studies. Symptoms include mild redness, sneezing, or coughing after prolonged contact or inhalation of dust.
Chronic Effects: No robust data exists for long-term effects, though lack of widespread use keeps exposure rare outside labs.
Carcinogenicity: Not classed as a confirmed carcinogen by major regulatory bodies like OSHA, IARC, or NTP.
Other Health Data: No known evidence points to mutagenic, reproductive, or sensitizing risks in typical laboratory settings.
Aquatic Toxicity: Data remains limited, though ionic bromide compounds sometimes stress aquatic life at high concentrations.
Mobility in Soil: May leach slowly, but not highly volatile—most concerns come from runoff in case of large spills.
Persistence and Degradability: Not documented as readily biodegradable. Caution with drainage, especially in sensitive environments.
Bioaccumulation: Unlikely to build up in tissues, according to most references on similar pyridinium salts.
Small-Scale Disposal: Package tightly in labeled chemical waste containers; coordinate pickup with institutional hazardous waste services.
Large-Scale Disposal: Send for incineration at a licensed chemical disposal facility, avoiding landfill where possible.
Avoidance: Do not discharge into waterways, storm drains, or municipal waste unless allowed by local regulations. Proper paperwork ensures that labs meet all compliance requirements.
UN Number: No designated UN number for this specific salt in international databases.
Transport Category: Not regulated as a hazardous material under standard chemical shipping codes, though local regulations might flag it for extra packaging.
Packaging: Use sealed, clearly labeled, puncture-resistant containers; double-bagging can help prevent loss from breakage during transport.
Lab Transport: Move using secondary containment to minimize spill risks in hallways or elevators.
Labelling Requirements: GHS regulations recommend "Warning" labels with eye/skin irritation hazard pictograms if concentrations exceed threshold quantities.
Chemical Inventories: Found in certain chemical regulatory lists—always confirm compliance with local and national chemical inventory registers.
Workplace Regulation: Must meet OSHA’s Hazard Communication Standard in the United States. Familiarity with regional regulations ensures labs do not skip essential record-keeping or training.
