Material Safety Data Sheet: 1-Butyl-4-Methyl Pyridinium Chloride

Identification

Product Name: 1-Butyl-4-Methyl Pyridinium Chloride
Chemical Formula: C10H16ClN
CAS Number: 1124-11-4
Recommended Use: Research, solvent, organic synthesis, electrochemical studies
Supplier Details: Available on request
Emergency Phone: Local poison control or hazardous materials emergency response unit

Hazard Identification

GHS Classification: Irritant, Acute Oral Toxicity – Category 4, Skin Sensitizer – Category 1
Physical Hazards: May irritate eyes, skin, and mucous membranes; possible combustion products include toxic fumes
Health Hazards: Harmful if swallowed, may cause skin redness or rashes, triggers respiratory discomfort on inhalation, eye contact causes watering and stinging
Environmental Hazards: Toxic to aquatic organisms, may cause long-term adverse effects
Signal Word: Warning
Precautionary Statements: Avoid breathing dust or fumes, wear gloves and eye protection, wash hands after handling

Composition / Information on Ingredients

Chemical Name: 1-Butyl-4-Methylpyridinium Chloride
Synonyms: BMPyCl
Concentration: ≥99% (by weight)
Molecular Weight: 185.69 g/mol
Impurities / Stabilizing Additives: None reported under normal storage and handling conditions

First Aid Measures

Eye Contact: Immediately flush eyes with plenty of water, hold eyelids apart for several minutes, seek medical attention if irritation develops
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, contact physician if rash or irritation persists
Inhalation: Move exposed person to fresh air, keep at rest, monitor for breathing difficulty; medical observation if symptoms occur
Ingestion: Rinse mouth with water, do not induce vomiting, seek immediate medical help
Most Important Symptoms and Effects: Burning eyes, cough, headache, nausea, skin irritation
Notes to Physician: Symptomatic treatment, no specific antidotes identified

Fire-Fighting Measures

Suitable Extinguishing Media: Dry powder, foam, carbon dioxide (CO2), water spray for cooling containers
Specific Hazards: Thermal decomposition releases toxic gases including carbon monoxide, nitrogen oxides, hydrogen chloride
Firefighter Protection: Wear full protective clothing and self-contained breathing apparatus
Special Procedures: Remove containers from fire area if safe, avoid inhaling combustion gases; contain run-off to prevent environmental contamination

Accidental Release Measures

Personal Precautions: Evacuate spill area, use chemical-resistant gloves and eye protection, avoid breathing dust or vapors
Environmental Precautions: Prevent spill from entering drains or waterways, notify authorities for significant releases
Cleanup Methods: Absorb with inert material (sand, earth), shovel into suitable container for disposal; clean spill site with water and detergent
Disposal: Follow all local and national environmental regulations

Handling and Storage

Safe Handling: Wear gloves, goggles, lab coat, avoid skin and eye contact, work in well-ventilated area
Storage: Keep tightly sealed in original container, store in cool, dry, ventilated area away from strong acids or oxidizers
Other Precautions: Do not eat, drink, or smoke while handling product, wash hands before breaks and after work
Incompatibilities: Strong oxidizing agents, reducing agents, acids

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established limits for this compound, minimize exposure as a precaution
Engineering Controls: Use fume hood, ensure adequate ventilation, use local exhaust if necessary
Personal Protective Equipment: Chemical-resistant gloves, safety goggles, lab coat, avoid open footwear
Respiratory Protection: Use properly fitted respirator if ventilation is inadequate
Hygiene Measures: Wash hands thoroughly after handling, do not touch face during use

Physical and Chemical Properties

Appearance: Off-white to yellowish solid or powder
Odor: Faint amine-like
pH: Not determined (aqueous solutions slightly basic)
Melting Point: Approximately 85–110°C (varies with purity)
Boiling Point: Decomposes before boiling
Solubility: Highly soluble in water, ethanol, DMSO
Vapor Pressure: Negligible at room temperature
Density: Estimated 1.1–1.2 g/cm³
Partition Coefficient (Log Kow): Not available
Flash Point: Not flammable below 100°C
Other Properties: Hygroscopic, may form clumps with moisture

Stability and Reactivity

Chemical Stability: Stable under normal temperatures and pressures
Conditions to Avoid: Avoid heat, direct sunlight, moisture, strong acids or bases
Reactivity: Reacts with strong oxidizers and reducing agents
Decomposition Products: Carbon monoxide, carbon dioxide, hydrogen chloride, nitrogen oxides
Polymerization: Does not undergo hazardous polymerization under expected conditions

Toxicological Information

Acute Toxicity (Oral): LD50 not fully established, estimated moderate toxicity based on structure
Skin Contact: Irritation possible on prolonged exposure
Eye Contact: May cause temporary discomfort and redness
Inhalation: Respiratory irritant effects, possible cough or difficulty breathing
Chronic Exposure: Repeated contact can lead to dermatitis; not recognized as carcinogen or mutagen by IARC or NTP
Target Organs: Skin, eyes, respiratory tract
Symptoms: Irritation, headache, nausea, temporary respiratory discomfort

Ecological Information

Ecotoxicity: Harmful to aquatic life, avoid disposal to waterways
Mobility: Highly soluble, may spread rapidly in aqueous environments
Persistence and Degradability: Limited data, potential for persistence in environment
Bioaccumulation: Evidence suggests low-moderate risk of bioaccumulation
Other Effects: May disrupt aquatic microorganism balance if released in large quantities

Disposal Considerations

Waste Treatment Methods: Dispose via licensed chemical waste contractor
Contaminated Packaging: Wash and reuse when possible or treat as hazardous waste
Disposal Recommendations: Do not discharge to sewer, surface water, or soil; comply with national, local, international laws

Transport Information

UN Number: Not assigned
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: Not regulated
Marine Pollutant: May require labeling for large shipments
Special Precautions for Transport: Protect containers from damage, clearly label, carry spill clean-up materials

Regulatory Information

TSCA (USA): In compliance
REACH (EU): Separate registration may be required for bulk use
Hazard Communication: Subject to workplace right-to-know laws in some jurisdictions
Other Regulations: Not listed as restricted or prohibited, always check recent local and federal legislation
Label Elements: Compliant under GHS standards, appropriate hazard warning and precautionary statements required