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Chemical Name: 1-Butylpyridinium Hydrobromide Chemical Formula: C9H14BrN Synonyms: N-Butylpyridinium Bromide Use: Primarily found in research labs, often used in ionic liquid studies and as a phase transfer catalyst. Physical Description: Usually appears as a white to off-white crystalline powder with a mild odor.
Acute Effects: Skin and eye irritation are likely if direct contact occurs. Inhalation may cause throat and respiratory discomfort. Ingestion can bring on gastric upset, nausea, or abdominal pain. Potential Chronic Effects: Long-term exposure may dry out or irritate skin; persistent inhalation may affect respiratory health. GHS Classification: Irritant, not generally classified as acutely toxic or carcinogenic. Hazard Symbols: Exclamation mark indicates irritation risk.
Main Ingredient: 1-Butylpyridinium Hydrobromide Purity: Commonly available at high purity (over 98%) for lab-scale work. Other Impurities: Trace moisture and possibly residual solvents from manufacturing—rare but worth monitoring. CAS Number: 146390-94-1
Skin Contact: Wash well with soap and water, remove contaminated clothing, seek medical attention for persistent irritation. Eye Contact: Rinse cautiously under running water for minutes, avoid rubbing, get medical advice for pain or redness. Inhalation: Move to fresh air, rest, and seek attention if coughing or irritation continues. Ingestion: Rinse mouth; never try to induce vomiting if feeling unwell, consult a physician if symptoms occur.
Suitable Extinguishing Media: Water spray, foam, dry powder, or carbon dioxide can each control a fire involving this chemical. Hazardous Combustion Products: Hydrobromic acid and nitrogen oxides may form in a fire. These fumes call for respiratory protection and care. Precautions: Firefighters need full gear, including a self-contained breathing apparatus, to dodge hazardous smoke and fumes.
Personal Protection: Use gloves, goggles, and a lab coat whenever cleaning up. A dust mask limits inhalation risks. Methods for Clean-Up: Use inert absorbents like sand for spills. Sweep up, avoid generating dust, ventilate the area, and dispose as solid chemical waste. Environmental Precautions: Keep out of drains and sewers; this product doesn’t break down easily, so water contamination should be avoided.
Handling: Wear gloves and goggles to protect against splashes or contact. Work in a ventilated space. Avoid breathing in dust or vapors. Wash hands after use. Storage: Keep sealed in a cool, dry, well-ventilated cabinet. Protect from light and moisture, and segregate from food and incompatible chemicals, especially strong oxidizers or acids.
Control Measures: Engineering controls like local exhaust can make a big difference in lab safety. Fume hoods or ventilated benches help keep airborne levels low. Personal Protective Equipment: Wear chemical-resistant gloves, standard lab goggles, and a long-sleeve coat. Use respiratory protection if dust becomes airborne or ventilation falls short. Hygiene Measures: No eating or drinking around this material; wash hands after use.
Appearance: Solid, crystalline, color ranges from white to pale beige Odor: Slight but not overpowering Melting Point: Usually falls around 120 to 130°C Solubility: Freely dissolves in water and polar solvents Vapor Pressure: Almost negligible under normal conditions pH (aqueous solution): Slightly acidic
Chemical Stability: Stays stable in a sealed container at room temperature out of direct sunlight. Reactivity Hazards: May form toxic fumes with strong acids or oxidizers. Avoid high temperatures and incompatible chemicals. Polymerization: Does not polymerize.
Acute Toxicity: Not highly toxic; mild to moderate irritation is more typical. Likely Routes of Exposure: Eyes, skin, and lungs, depending on care taken in handling. Symptoms: Skin redness, tingling, watery eyes, sore throat, and coughing may crop up with exposure. Sensitization: Repeated contact can produce dermatitis or aggravate existing skin issues. Carcinogenicity/Mutagenicity: No firm evidence links this compound to cancer or genetic mutations.
Aquatic Toxicity: May be harmful to aquatic life, particularly in high concentrations; ionic compounds can distress fish and algae. Persistence and Degradability: Not readily biodegradable. May persist, contributing to long-term environmental load if released. Bioaccumulation: Unlikely to accumulate significantly in animal tissues, but minimizing emissions to the environment matters. Mobility in Soil: Can move with water due to high solubility, raising risk of infiltration to groundwater sources if not properly contained.
Waste Management: Treat as hazardous laboratory chemical waste and send for incineration or other approved chemical destruction methods. Container Disposal: Thoroughly rinse containers before recycling or disposal; avoid using for food or drink. Environmental Protection: Do not dump into municipal sewers, stormwater drains, or the natural environment.
UN Number: Not always assigned; not considered highly dangerous in small quantities, but bulk shipments may require classification. Packing Group: Usually unassigned, but packaging should prevent dispersion or accidental contact. Shipping Practices: Keep containers closed, protect from impact and moisture, abide by laboratory or commercial carrier instructions.
Inventory Status: Low regulatory pressure, but occupational health agencies may issue guidance on safe handling in the workplace. Toxic Substance Controls: Listed in research chemical inventories; no widespread consumer or food industry use. Lab Practices: Always follow institutional guidelines for chemical hygiene, documentation, and record-keeping.
