Product Name: Benzyldimethylhexadecylammonium Chloride
CAS Number: 122-18-9
Synonyms: Benzyl-C16-alkyldimethylammonium chloride, C16 Benzalkonium chloride
Recommended Use: Disinfectant, sanitizer, surface cleaner in healthcare, agriculture, institutional, and domestic applications
Supplier Information: Manufacturer address and contact number required for direct queries
Emergency Phone: Local emergency and poison control contacts
Classification: Acute Toxicity (Oral, Dermal), Skin and Eye Irritation, Environmental Hazard (Aquatic Acute and Chronic)
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage; Harmful if swallowed; Toxic to aquatic life with long lasting effects; Possible respiratory irritation from mists
Pictograms: Corrosive, Acute Toxic, Environmental Hazard
Precautionary Statements: Avoid contact with skin, eyes, and clothing. Do not breathe mist, vapour, or spray. Keep away from waterways. Wear protective clothing, gloves, and eye protection.
Chemical Name: Benzyldimethylhexadecylammonium Chloride
Concentration: Active ingredient typically 60-80% by weight in commercial products
Impurities/Additives: Trace amounts of water, ethanol, residual alkyl dimethylbenzylammonium chloride homologs
Formulation Note: Product often diluted for end-use
Inhalation: Move exposed person to fresh air promptly. Seek medical attention if breathing becomes difficult or symptoms persist.
Skin Contact: Remove contaminated clothing. Rinse skin with copious water for at least 15 minutes. Seek medical help for persistent irritation or burns.
Eye Contact: Immediately flush eyes with water for at least 15 minutes, holding eyelids open. Obtain medical assistance right away.
Ingestion: Do not induce vomiting. Rinse mouth with water. Seek urgent medical advice. Provide medical staff with product details.
Advice for Doctor: Treat symptoms, consult poison information resources for chemical-specific guidance.
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam.
Specific Hazards Arising: Thermal decomposition can release toxic fumes including hydrogen chloride, nitrogen oxides, carbon oxides.
Protective Equipment: Wear self-contained breathing apparatus and full protective gear. Avoid breathing smoke or vapors.
Firefighting Procedures: Cool containers with water spray. Stay upwind. Remove containers from fire area if safe.
Combustible Properties: Product is not highly flammable, but in fire conditions, containers may rupture.
Personal Precautions: Avoid skin and eye contact, do not inhale aerosols or vapors. Wear gloves, goggles, and protective clothing.
Environmental Precautions: Prevent entry into sewers, drains, and waterways. Alert authorities if material contaminates environment.
Containment Procedures: Contain spillage. Cover drains. Absorb with inert material such as sand or earth.
Cleanup Methods: Scoop up absorbed material and place in suitable, labeled containers for disposal. Flush area with plenty of water.
Decontamination: Wash spill area with mild detergent and water. Dispose of contaminated cleanup materials according to local regulations.
Handling: Use in well-ventilated areas. Keep containers tightly closed. Do not eat, drink, or smoke around the product. Avoid contact with incompatible materials, especially anionic surfactants and strong oxidizers. Practice good industrial hygiene.
Storage: Store in tightly sealed containers made of compatible material, away from direct sunlight, moisture, and sources of heat. Keep out of reach of children and untrained personnel. Store at ambient temperature in a cool, dry, well-ventilated space. Do not store with acids or foodstuffs. Keep away from drains to prevent environmental entry.
Occupational Exposure Limits: No established threshold limit value; minimize exposure by engineering controls and PPE.
Engineering Controls: Ensure adequate ventilation, use local exhaust where airborne concentrations may exist.
Personal Protective Equipment: Wear chemical resistant gloves (nitrile, PVC), goggles or face shield, protective clothing or overalls. Use respiratory protection if aerosols or vapors are generated.
Hygiene Practices: Wash hands thoroughly after handling. Do not eat or drink during use.
Environmental Exposure Controls: Prevent release to aquatic systems. Use containment to avoid spills.
Appearance: Colorless to pale yellow viscous liquid
Odor: Slight aromatic, amine-like
pH: 6.0 to 8.5 (10% aqueous solution)
Melting Point: Approximately 40-45°C
Boiling Point: Decomposes before boiling
Flash Point: > 100°C (not easily flammable)
Solubility: Soluble in water and ethanol
Density: 0.96–1.04 g/cm³ (at 25°C)
Vapor Pressure: Negligible at ambient temperatures
Viscosity: Thickens with concentration, flows easily when warmed
Partition Coefficient (n-octanol/water): Log Kow ~1-3
Chemical Stability: Stable under recommended storage and use conditions; may degrade slowly over long periods.
Incompatible Materials: Anionic surfactants, strong oxidizing agents, strong acids and alkalis. Contact may cause exothermic reaction.
Decomposition Products: Toxic gases may arise including nitrogen oxides, hydrogen chloride, benzyl chloride upon combustion.
Hazardous Reactions: Product can react with certain organics and anionics to release heat and toxic fumes. Avoid mixed storage or application.
Acute Toxicity: Oral LD50 (rat): 240-400 mg/kg; Dermal LD50 (rabbit): 1420 mg/kg. Exposure causes burning, irritation, nausea, vomiting if swallowed.
Skin Contact: Corrosive to skin on prolonged or repeated contact. Can cause burns.
Eye Contact: Severe irritation, risk of permanent damage.
Inhalation: Inhalation may cause respiratory irritation, coughing, difficulty breathing.
Chronic Effects: Prolonged or repeated exposure may cause dermatitis or eczema.
Mutagenicity, Carcinogenicity, Reproductive Effects: No reliable evidence of carcinogenic, mutagenic, or reproductive effects in humans with normal use, but close monitoring and care advised due to category of chemical.
Sensitization: Some individuals can develop allergic reactions with repeated exposure.
Aquatic Toxicity: Highly toxic to fish, daphnia, and algae; LC50 (fish): 0.3-0.8 mg/L (96 hr); EC50 (daphnia): 0.016 mg/L (48 hr).
Persistence and Degradability: Poorly biodegradable, can persist in soil and water under some conditions.
Bioaccumulation: Moderate potential for bioaccumulation; log Kow suggests some accumulation in aquatic organisms.
Soil Mobility: Low to moderate mobility. Adsorbs to soil particles.
Other Adverse Effects: Disrupts aquatic ecosystems such as algae and invertebrates at low concentrations. Avoid runoff and release into environment.
Waste Disposal: Hand over surplus and non-recyclable material to a licensed hazardous waste disposal contractor. Do not discharge into sewers or waterways. Consult local, regional, and national authorities for proper disposal methods.
Container Disposal: Triple-rinse empty containers prior to recycling or discarding. Remove product labels and puncture containers to prevent reuse.
Precautions: Wear PPE during disposal activities.
Regulatory Compliance: Disposal must follow environmental protection regulations.
UN Number: UN 2922
Proper Shipping Name: Corrosive Liquid, Toxic, N.O.S. (Benzyldimethylhexadecylammonium Chloride)
Transport Hazard Class: 8 (corrosive substances), 6.1 (toxic substances)
Packing Group: II
Label Requirements: Corrosive, Toxic
Marine Pollutant: Yes
Special Precautions: Prevent leakage and spillage during transport. Keep separated from food, animal feed, and incompatible chemicals.
Safety, Health and Environmental Regulations: Subject to global and regional laws including EU REACH, US TSCA, Canadian DSL/NDSL, Australian AICS.
Labeling Requirements: Must show hazard pictograms, signal words, and statements in line with GHS and local regulations.
Restricted Uses: Product restrictions apply in potable water treatment and food contact. Follow authorities’ guidelines strictly.
Notification and Reporting: Facilities must report releases above regulatory thresholds.
Worker Protection: Follow local chemical hygiene and worker protection standards for hazardous substances.
Inventory Status: Listed or registered in major chemical inventories internationally.
