Product Name: Octadecyldimethylbenzylammonium Chloride
Synonyms: Stearyl Dimethyl Benzyl Ammonium Chloride, Stearyl Benzyl Dimethyl Ammonium Chloride
Chemical Formula: C27H48ClN
Molecular Weight: 422.14 g/mol
Recommended Uses: Used as disinfectant, bactericide, algicide, and surfactant in cleaning formulations
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CAS Number: 122-19-0
Classification: Acute toxicity (oral, dermal), Skin corrosion/irritation, Serious eye damage/eye irritation, Hazardous to aquatic environment
Signal Word: Danger
Hazard Statements: Harmful if swallowed or in contact with skin; Causes severe skin burns and eye damage; Toxic to aquatic life with long lasting effects
Precautionary Statements: Avoid release to the environment; Wear protective gloves and eye protection; Wash exposed skin thoroughly after handling; Do not eat, drink, or smoke when using
Routes of Entry: Inhalation, ingestion, skin and eye contact
Effects of Exposure: Irritation of respiratory system, damage to mucous membranes, potential risk of serious damage to eyes
Carcinogenic Status: No classification as carcinogen according to IARC, NTP, or OSHA
Other Hazards: Product breaks down slowly in the environment, high toxicity to fish and aquatic invertebrates
Chemical Name: Octadecyldimethylbenzylammonium chloride
CAS Number: 122-19-0
Concentration: Typically ranges from 60% to 80% as supplied
Other Components: Water, impurities below reporting threshold
Impurities: Trace levels of methyl chloride and related quaternary ammonium compounds
Mixture Status: Substance, not a blend; purity usually exceeds 95% unless diluted for application
Inhalation: Move exposed person to fresh air immediately; call for medical attention if breathing difficulty remains or worsens
Skin Contact: Remove contaminated clothing and thoroughly wash affected area with soap and water; seek medical attention for any persistent irritation
Eye Contact: Rinse eyes with plenty of clean, tepid water for several minutes while lifting eyelids; prompt medical attention is required
Ingestion: Rinse mouth with water, do not induce vomiting; get medical advice without delay
Most Important Symptoms: Burning sensation, cough, shortness of breath, blisters, pain, impaired vision if eye contact
Special Notes to Physician: Symptomatic support and regular monitoring of respiratory and gastric functions; no specific antidote known
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, or water spray for small fires
Specific Hazards in Fire: Emits toxic fumes of hydrogen chloride, nitrogen oxides, and carbon oxides when burning
Protective Equipment: Wear self-contained breathing apparatus and full body protective gear
Firefighting Procedures: Isolate area, prevent entry of runoff into drains or watercourses, use water spray to cool containers
Unusual Fire Hazards: Containers may burst from pressure buildup if heated
Combustion Products: Hydrogen chloride, benzene derivatives, potentially harmful gases
Personal Precautions: Evacuate area, wear suitable respiratory, eye, and skin protection
Environmental Precautions: Do not let product reach sewers or waterways; notify authorities if a significant spill occurs
Methods for Cleanup: Absorb with inert materials like sand or earth; place collected material in appropriate chemical waste container for disposal
Cleanup: Use non-sparking tools, ventilate area, and decontaminate surfaces with large amounts of water
Small Spills: Dilute and mop up, avoiding skin contact
Large Spills: Isolate hazard area, contain spill, and seek assistance from trained personnel
Handling Precautions: Always use protective gear, avoid direct contact, prevent inhalation of vapors, ensure working area has sufficient ventilation
Safe Storage Conditions: Keep in tightly sealed original containers in a cool, dry, well-ventilated zone away from incompatible materials
Incompatible Storage: Avoid acids, strong oxidizing agents, anionic surfactants, reducing agents
Precautionary Measures: Use spill proof containers on non-absorbent surfaces, label containers clearly
Shelf Life: Use within recommended shelf life to maintain product efficacy and stability
Special Handling Advice: Avoid eating, drinking, or smoking during use, ensure easy access to eyewash stations and emergency showers
Occupational Exposure Limits: Not established for this compound
Engineering Controls: Mechanical ventilation or local exhaust to control vapors or mists
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), goggles or face shield, lab coat or chemical protective suit, safety shoes
Respiratory Protection: Use NIOSH-approved mask if ventilation inadequate
Hygiene Measures: Wash hands and skin thoroughly after handling, remove contaminated clothing prior to breaks
Environmental Controls: Prevent uncontrolled release into environment
Appearance: White to pale yellow waxy solid, may be viscous liquid if diluted
Odor: Mild aromatic or ammoniacal
Odor Threshold: Not available
pH (1% solution): 6.0 – 8.0
Melting Point: 30 – 35°C
Boiling Point: Decomposes before boiling
Flash Point: Greater than 100°C (may vary with formulation)
Solubility: Easily soluble in water, forms clear solution
Vapor Pressure: Low at room temperature
Density: Approximately 0.89 - 0.92 g/cm³
Partition Coefficient (log Kow): 4-5 (highly lipophilic)
Auto-ignition Temperature: Not determined
Particle Characteristics: Granular solid if not in solution
Evaporation Rate: Not significant at room temperature
Chemical Stability: Chemically stable under normal conditions for storage and use
Reactivity: No dangerous reaction known under recommended storage and use
Hazardous Polymerization: Does not occur
Incompatible Materials: Reducing agents, anionic surfactants, strong bases, and acids
Hazardous Decomposition Products: Hydrogen chloride, nitrogen oxides, benzyl derivatives
Conditions to Avoid: High heat, sources of ignition, direct sunlight, and moisture ingress
Shelf Life: Typically stable in sealed containers for at least two years
Routes of Exposure: Inhalation, skin contact, swallowing, and eye contact
Acute Toxicity (oral): LD50 (rat): 400 – 1000 mg/kg
Acute Toxicity (dermal): LD50 (rabbit): 2000 mg/kg (approximate)
Skin Corrosion/Irritation: May cause severe burns or blisters
Serious Eye Damage/Irritation: Causes permanent eye damage or blindness if unwashed
Respiratory Sensitization: May cause upper respiratory irritation, no known sensitization
Chronic Effects: Prolonged exposure amplifies risk of contact dermatitis and respiratory problems
Mutagenicity/Carcinogenicity: No evidence in animal tests
Other Toxicological Data: Not known to accumulate in tissues after short-term exposure; toxicity to human cells established at high doses
Ecotoxicity: Highly toxic to aquatic organisms, especially fish and invertebrates (LC50 values for Daphnia and fish: 0.1 – 0.5 mg/L)
Persistence and Degradability: Slow biodegradation in soil and water; strongly adsorbed to sediments
Bioaccumulation Potential: Significant due to high log Kow, possible risk to aquatic food chains
Mobility in Soil: Low mobility, sticks to surfaces and organic matter
Other Adverse Effects: Alters ecosystem balance in water bodies at very low concentrations
Notes: Prevent release into environment, follow local wastewater treatment guidelines
Disposal Methods: Dispose of in accordance with local, state, and national regulations in controlled landfill or by chemical incineration
Container Disposal: Rinse containers thoroughly before recycling or dispose of as hazardous waste
Recommendations: Do not pour down drains, sewers, or water courses
Additional Instructions: Engage licensed chemical waste disposal contractors for larger amounts; label waste container with chemical name and hazard type
Precautionary Measures: Ensure no free liquid remains; keep out of reach of unauthorized personnel
UN Number: 2923
UN Proper Shipping Name: Corrosive solid, toxic, n.o.s. (Contains octadecyldimethylbenzylammonium chloride)
Transport Hazard Class: 8 (corrosive), also 6.1 (toxic)
Packing Group: II
Hazard Labels: Corrosive, Toxic
Environmental Hazards: Marine pollutant
Special Precautions: Handle with compatible chemical packaging, avoid breakage or spillage during transport, must be accompanied by appropriate shipping papers
TSCA Status: Listed on Toxic Substances Control Act Inventory
EU Regulation: Listed under REACH; classified as hazardous under CLP Regulation (EC No. 1272/2008)
OSHA: Considered hazardous under OSHA Hazard Communication Standard (29 CFR 1910.1200)
EPA: Regulated under FIFRA as an antimicrobial pesticide
Other State Regulations: Subject to state right-to-know laws; check SARA Title III and Proposition 65 for updates
Workplace Exposure: No established federal exposure limits; use best industrial hygiene practices
Labeling Requirements: Use GHS-compliant hazard icons, statements, and safety recommendations on all containers
