Product Name: Octadecyltrimethylammonium Chloride
Chemical Formula: C21H46ClN
Synonyms: Stearyltrimethylammonium Chloride, Trimethyloctadecylammonium chloride
CAS Number: 112-03-8
Recommended Use: Cationic surfactant, laboratory reagent, antistatic agent, textile additive, and as a phase transfer catalyst in chemical syntheses
Supplier: Contact local supplier for specific company details
Emergency Contact: Refer to local regulations for the appropriate response numbers and protocols
GHS Classification: Skin corrosion/irritation (Category 2), Serious eye damage/eye irritation (Category 1), Acute toxicity/Oral (Category 4), Aquatic acute hazard (Category 1)
Signal Word: Danger
Hazard Statements: Causes severe eye damage, causes skin irritation, harmful if swallowed, highly toxic to aquatic life
Pictograms: Corrosive, Exclamation Mark, Environment
Precautionary Statements: Wear protective gloves and eye/face protection, avoid release to the environment, wash hands thoroughly after handling, do not eat, drink, or smoke while using the product
Potential Health Effects: Eye and skin irritant with potential to cause burning sensations, nausea, vomiting, and cough upon ingestion or inhalation exposure
Chemical Name: Octadecyltrimethylammonium Chloride
Concentration: Typically 98-100% pure for laboratory grade, lower in formulated mixtures
Impurities: Trace organic byproducts from manufacturing, water and residual solvents, do not significantly alter hazard classification but may contribute to odor or minor irritation
Molecular Weight: 339.05 g/mol
EC Number: 203-928-6
Inhalation: Move person to fresh air, keep at rest in a position comfortable for breathing, seek medical attention if respiratory symptoms persist
Skin Contact: Remove contaminated clothing immediately, rinse skin with plenty of soap and water for at least 15 minutes, seek medical attention for persistent irritation
Eye Contact: Flush eyes gently with copious water for at least 15 minutes while holding eyelids open, remove contact lenses if present and easy to do, seek immediate medical care
Ingestion: Rinse mouth thoroughly with water, do not induce vomiting, give water to dilute if the person is conscious, seek immediate medical advice to address any risk of burns or poisoning
Note to Physician: Treat symptomatically, monitor for respiratory distress, aspiration risk, and consider need for supportive care and decontamination
Suitable Extinguishing Media: Water spray, dry chemical powder, alcohol-resistant foam, carbon dioxide
Specific Hazards: Emits toxic fumes under fire conditions, including hydrogen chloride, nitrogen oxides, and carbon oxides
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear to prevent inhalation of fumes
Special Procedures: Use water spray to cool containers exposed to fire, keep unauthorized personnel out, avoid allowing runoff to enter watercourses
Personal Precautions: Evacuate unnecessary personnel, use suitable respiratory and skin protection, avoid dust formation and inhalation
Environmental Precautions: Prevent further leakage or spillage if safe, do not allow product to enter drains, surface water, or soil to minimize environmental release
Methods for Clean-Up: Absorb spill with inert material such as dry sand or earth, avoid generating airborne dust, collect and place in suitable labeled containers for proper disposal, ventilate area after clean-up is complete
Handling: Use with adequate ventilation, avoid contact with eyes, skin, and clothing, wear proper personal protective equipment, do not eat or drink near the work area, handle away from sources of ignition
Storage: Store in tightly closed original container in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizing and reducing agents, acids, and bases, segregate from food and animal feeds
Engineering Controls: Use local exhaust ventilation or process enclosures to control airborne exposure levels
Personal Protective Equipment: Wear chemical-resistant gloves (nitrile, neoprene), safety goggles with side-shields or face shield, flame-retardant lab coats or overalls, and chemical-resistant footwear
Respiratory Protection: Use an approved respirator if exposure limits are exceeded or during spray application, clean-up, or emergencies
Hygiene Measures: Wash hands and exposed skin before breaks, at end of shift, remove contaminated clothing and wash before reuse
Occupational Exposure Limits: No OSHA PEL or ACGIH TLV established, keep exposure as low as reasonably achievable
Appearance: White to pale yellow crystalline powder or flake
Odor: Moderate amine-like odor
pH (1% solution): 6.0 - 8.0
Melting Point: 238-242°C
Boiling Point: Decomposes before boiling
Solubility: Soluble in water and alcohol, forms colloidal solutions in water
Vapor Pressure: Negligible at room temperature
Flash Point: Not applicable (solid)
Density: 0.98–1.0 g/cm³
Partition Coefficient (Log Kow): Estimated above 5, indicating high potential for bioaccumulation
Decomposition Temperature: Above 240°C
Chemical Stability: Stable under normal temperature and pressure conditions if kept dry and in original packaging
Reactivity: Reacts vigorously with strong acids and bases, can form potentially toxic fumes under thermal decomposition
Hazardous Reactions: May react with oxidizing or reducing agents to generate heat and off-gassing, avoid mixing with incompatible substances
Conditions to Avoid: Exposure to moisture, heat sources, and direct sunlight
Hazardous Decomposition Products: Hydrogen chloride, carbon monoxide, carbon dioxide, nitrogen oxides
Acute Toxicity: Oral LD50 in rats commonly cited as 210-600 mg/kg, harmful if swallowed or inhaled
Irritation: Causes severe irritation to eyes, moderate to severe skin irritation; respiratory system irritation on dust inhalation
Chronic Effects: Prolonged or repeated exposure may cause dermatitis and sensitization
Mutagenicity: Not classified as mutagenic in standard in vitro or animal studies
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA
Other Health Effects: Difficulty breathing and coughing possible after inhalation, gastrointestinal symptoms after ingestion
Aquatic Toxicity: Highly toxic to aquatic organisms, LC50 for fish (96h) often below 1 mg/L, potential for long-term adverse effects in aquatic environments
Persistence and Degradability: Moderate to persistent, slow degradation in the environment
Bioaccumulation: High potential for bioaccumulation based on octanol-water partition coefficient
Mobility: Low mobility in soil due to cationic nature and tendency to sorb on negatively charged particles
Other Ecological Effects: Avoid contamination of waterways, can cause long-term damage to water habitats
Waste Disposal Methods: Collect and contain product for incineration at a facility approved for chemical waste, avoid landfill, do not flush to drains or allow into surface waters
Contaminated Packaging: Triple rinse containers, offer clean containers for recycling or reconditioning, dispose of contaminated containers as hazardous waste
Local Regulations: Dispose of contents and containers in accordance with federal, state, and local regulations covering chemical waste
UN Number: UN 3077
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (contains Octadecyltrimethylammonium Chloride)
Transport Hazard Class: 9 (Miscellaneous dangerous substances and articles)
Packing Group: III
Marine Pollutant: Classified as a marine pollutant
Transport Precautions: Keep container tightly closed, handle with care to prevent leakage, segregate from incompatible materials during transport, ensure dry and secure packaging
TSCA Status: Listed on the US Toxic Substances Control Act (TSCA) inventory
REACH Status: Registered under the European REACH regulations, subject to restrictions for environmental protection
OSHA: Classified as hazardous, requires compliance with Hazard Communication Standard
SARA 302/304: Not listed as an extremely hazardous substance
SARA 313: Not subject to reporting
Environmental Regulations: Product use and disposal must comply with local, state, federal, and international environmental regulations, particular attention required for aquatic toxicity
Labeling: Requires hazard pictograms for corrosive and aquatic toxicity, clear risk statements and safety advice for users
