Product Name: Pyridinium Butylsulfonate
Chemical Family: Pyridinium compounds
SYNONYMS: 1-Butyl-1-pyridinium butanesulfonate
CAS Number: 143652-23-7
Manufacturer: Refer to local supplier or manufacturer label
Use: Typically used as an ionic liquid in chemical research, battery electrolytes, and organic synthesis
Emergency Contact Number: Refer to local emergency response centers
GHS Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Acute toxicity, oral (Category 4)
Hazard Statements: Causes skin and eye irritation. Harmful if swallowed. Exposure may lead to coughing, gastrointestinal disturbances, and discomfort.
Pictograms: Exclamation mark (for skin/eye irritant)
Precautionary Statements: Wash skin thoroughly after handling. Avoid contact with eyes, skin, and clothing. Do not eat, drink, or smoke during use.
Signal Word: Warning
Hazards to Humans and Environment: Irritation of eyes and mucous membranes, mild aquatic toxicity possible
Other Hazards: Vapor or dust can irritate respiratory tract, depending on handling
Chemical Identity: Pyridinium butylsulfonate
Chemical Formula: C9H15NO3S
Content (Purity): 95%-99%
Impurities: Residual pyridine, water, minor organic side products
EC Number: Not available
Molecular Weight: 217.28 g/mol
Inhalation: Move person to fresh air. If breathing becomes difficult, seek medical attention. Carry out artificial respiration if breathing stops.
Skin Contact: Remove contaminated clothing. Rinse skin with plenty of water for at least 15 minutes. Seek medical attention for persistent irritation.
Eye Contact: Flush with water for at least 15 minutes, lifting eyelids occasionally. Remove contact lenses if present and easy to do. Obtain medical assistance if redness or irritation continues.
Ingestion: Rinse mouth with water. Do not induce vomiting unless directed by a medical professional. Get medical help immediately.
General Advice: Show this sheet to attending physician.
Note to Doctors: Treat symptomatically.
Suitable Extinguishing Media: Water mist, dry chemical powder, foam, carbon dioxide
Unsuitable Extinguishing Media: High-pressure water streams
Special Hazards: May decompose forming toxic gases including nitrogen oxides, sulfur oxides, and carbon oxides
Protective Equipment: Firefighters should use self-contained breathing apparatus and appropriate protective gear.
Advice for Firefighters: Cool exposed containers with water spray. Approach from upwind.
Other Information: Avoid run-off to water bodies and drains as product components may be hazardous to aquatic life.
Personal Precautions: Wear protective clothing, gloves, and safety goggles. Avoid breathing dust or vapors.
Environmental Precautions: Prevent entry to sewers, watercourses, and soil. Notify emergency services if spill enters the environment.
Containment Methods: Cover spill with inert absorbent (sand, vermiculite). Collect and place in suitable, labeled containers for disposal.
Cleaning Methods: Use non-sparking tools to transfer material. Clean area with plenty of water after removal of bulk.
Reference to Other Sections: Refer to Exposure Controls and Disposal Considerations.
Handling: Wear appropriate PPE such as gloves, lab coat, and eye protection. Only use in a well-ventilated space, ideally fume hood. Minimize dust generation and accumulation. Wash hands after handling.
Storage: Store in tightly closed, clearly labeled containers. Keep in a cool, dry, well-ventilated area, away from direct sunlight, strong oxidizing agents, and moisture. Product may absorb water if exposed to air.
Incompatible Materials: Strong acids, bases, oxidizing agents.
Storage Temperature: Typical laboratory or room temperature (15–25°C)
Occupational Exposure Limits: No occupational exposure limit established for this compound.
Engineering Controls: Use chemical fume hood or adequate local ventilation.
Personal Protection: Chemical-resistant gloves (nitrile or neoprene), long-sleeved lab coat, splash-proof safety goggles, closed-toe shoes.
Respiratory Protection: Use NIOSH-approved respirators when exposure limits are exceeded or during large spills.
Hygiene Measures: Avoid contact with skin, eyes, and clothing. Wash hands before eating, drinking, or smoking. Remove and wash contaminated clothing before reuse.
Appearance: Colorless to pale yellow liquid or crystalline solid
Odor: Mild, possibly amine-like
pH: Not available
Freezing Point: Varies by purity and formulation, typically below ambient temperature
Boiling Point: Decomposes before boiling
Flash Point: > 100°C (varies by source)
Flammability: Not classified as highly flammable, but forms combustible dust
Solubility: Fully miscible with water
Vapor Pressure: Low
Auto-Ignition Temperature: Not available
Partition Coefficient: Not available
Chemical Stability: Stable under normal temperature and storage conditions.
Thermal Decomposition: Decomposes to produce toxic gases (sulfur oxides, nitrogen oxides, carbon monoxide, carbon dioxide) upon strong heating.
Reactivity: Reacts with oxidizing agents, acids, and bases, leading to possible hazardous conditions.
Conditions to Avoid: Excessive heat, open flames, static discharge, incompatible materials.
Incompatible Materials: Strong oxidizers, strong acids, alkali metals.
Polymerization Hazard: Product does not polymerize.
Corrosivity: Not classified as corrosive to metals.
Acute Toxicity (Oral): LD50 not established for humans; estimated to be in moderate range for rats (category 4).
Skin Corrosion or Irritation: Causes mild to moderate skin irritation on contact.
Eye Damage or Irritation: Causes temporary redness and irritation.
Sensitization: No data available; repeat or prolonged contact may cause sensitivity.
Chronic Toxicity: Data lacking for long-term effects. Low-level exposure may cause headaches, drowsiness, or nausea.
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified as carcinogenic or mutagenic. No animal reproductive toxicity data found.
Route of Exposure: Inhalation, skin contact, ingestion, eye contact.
Aquatic Toxicity: Mildly hazardous to aquatic organisms; low bioaccumulation potential.
Mobility: Readily dissolves in water, low tendency to absorb to soils.
Persistence and Degradability: Biodegradability not well studied; may resist breakdown in the environment.
Other Ecological Information: Toxic to aquatic plant and animal life at high concentrations.
BOD/COD: Not determined
Product Disposal: Dispose of product as hazardous chemical waste according to local, regional, or national regulations.
Contaminated Packaging: Wash and dispose of containers as chemical waste at approved facilities.
Disposal Methods: Incineration preferred, with flue gas scrubbing. Avoid landfill where possible.
Special Precautions for Landfill or Incineration: Destroy by incineration in compliance with local authorities.
Avoid Release: Do not allow product to reach surface water, sewers, or soil in significant quantities.
UN Number: Not classified as dangerous for transport.
Class: Not regulated under international transport rules (ADR, IMDG, IATA).
Packaging Group: Not assigned
Proper Shipping Name: Pyridinium butylsulfonate
Marine Pollutant: No
Transport Note: Follow local requirements for non-regulated chemicals. Secure containers to prevent leakage during transit.
Special Precautions: Keep away from foodstuffs and animal feed during transport.
Labeling According to GHS: Exclamation mark symbol for skin and eye irritant
TSCA Status: Not listed or not evaluated
REACH Registration: Not covered; limited to laboratory and research quantities
Other Regulations: Not listed as a controlled substance in most jurisdictions. Use and disposal fall under chemical safety guidelines for industrial and research use.
National Inventory Listings: Varies by country; consult government chemical inventories.
Workplace Hazard Rating: Caution advised for chemical handling, as with most organic salts.
