Product Name: Benzyldimethylstearylammonium Chloride Monohydrate
Chemical Formula: C27H48ClN·H2O
Synonyms: Stearyl Dimethyl Benzyl Ammonium Chloride, Quaternary Ammonium Compound
Recommended Use: Disinfectant, surfactant, industrial cleaner, phase transfer catalyst
Manufacturer: Listed by supplier contact and emergency phone details
CAS Number: 70750-47-9
UN Number: 2923
Relevant Identified Uses: Cleaning agents in healthcare settings, water treatment, textile softener formulations, laboratory research
Restrictions on Use: For professional or industrial use only, not approved for food or pharmaceutical products
GHS Classification: Acute Toxicity (Oral): Category 4; Skin Corrosion/Irritation: Category 1B; Eye Damage/Irritation: Category 1
Signal Word: Danger
Hazard Statements: Harmful if swallowed, causes severe skin burns and eye damage, toxic to aquatic life with long lasting effects
Pictograms: Skull and crossbones, corrosion, exclamation mark, environment
Precautionary Statements: Wear protective gloves, avoid breathing dust or mist, wash thoroughly after handling, avoid release to environment, keep container tightly closed, store locked up
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Other Hazards: May foam aggressively on contact with water, can react with strong oxidizers
Chemical Name: Benzyldimethylstearylammonium Chloride Monohydrate
Concentration: 96–100% (hydrated form)
Impurities: Minor impurities from production, likely under 1% total, non-contributory to hazard
CAS Numbers: Benzyldimethylstearylammonium Chloride Monohydrate: 70750-47-9, Water of Hydration: 7732-18-5
Molecular Weight: 440.13 g/mol (anhydrous), 458.15 g/mol (monohydrate)
Inhalation: Move to fresh air, support breathing, administer oxygen if affected, seek immediate medical attention
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, cover burns with sterile bandages, seek urgent medical care
Eye Contact: Rinse thoroughly with water for at least 15–20 minutes while lifting lids, remove contact lenses if present, seek emergency medical assistance
Ingestion: Rinse mouth, never induce vomiting, give water if conscious, seek medical help immediately, monitor for respiratory distress
Symptoms and Effects: Burning in mouth, respiratory discomfort, severe irritation or ulcerations, potential for delayed pulmonary effects
Advice for Doctor: Treat symptomatically, consider supportive treatment for caustic exposure, monitor airway closely
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam, water spray
Unsuitable Media: Direct water jet may spread spilled product
Specific Fire Hazards: Emits irritating and toxic fumes (hydrogen chloride, nitrogen oxides, carbon oxides) on combustion
Protective Equipment for Firefighters: Self-contained breathing apparatus with full body protection, chemical-resistant suit
Special Procedures: Use water spray to cool nearby containers, contain run-off from fire control to prevent environmental contamination, evacuate area of unprotected personnel
Personal Precautions: Evacuate unnecessary personnel, ventilate area, avoid bodily contact, use appropriate personal protective equipment including gloves, goggles, and vapor mask
Environmental Precautions: Keep out of drains, watercourses, and soil, notify authorities if large amounts enter water or sewage
Cleanup Procedure: Absorb with inert absorbent (sand, earth, vermiculite), transfer to closed labeled containers for disposal, flush residue with water while preventing runoff, decontaminate area with dilute sodium carbonate solution
Methods for Containment: Prevent spreading by diking with inert material, avoid excessive water during cleanup
Safe Handling: Work in well-ventilated areas, avoid formation of dust or aerosols, wear protective gloves, eye and face protection, avoid inhalation or ingestion
General Hygiene Practices: Wash hands before breaks, after handling, do not eat, drink, or smoke while using product
Storage Requirements: Store in tightly closed original containers, in dry, cool, well-ventilated locations away from acids, oxidizers, moisture, and direct sunlight
Specific Conditions: Keep containers upright, do not store near food or animal feed, ensure secondary containment for larger volumes
Incompatibilities: Avoid strong oxidizers and reducing agents, avoid contact with acids
Occupational Exposure Limits: No specific OEL established; minimize exposure as for all quaternary ammonium compounds
Engineering Controls: Use local exhaust ventilation, safety shower and eyewash in immediate work area
Personal Protection: Impervious gloves (nitrile, neoprene), chemical splash goggles, face shield for high risk, chemical-resistant clothing (apron or suit), respiratory protection if dust or aerosol formation is possible (P2 filter or better)
Environmental Controls: Maintain spill control procedures, avoid drainage into environment
Work Practices: Avoid cross-contamination with other chemicals, practice regular inspection of PPE
Physical State: White to off-white solid (powder or flakes)
Odor: Mild, characteristic ammonium odor
Boiling Point: Decomposes before boiling
Melting Point: 80–90°C (varies with hydration)
Solubility: Soluble in water and most polar organic solvents; forms clear to cloudy solutions in water
pH (1% solution): 6.0–8.0
Vapor Pressure: Negligible at room temperature
Specific Gravity: 0.95–1.05 (moisture content dependent)
Partition Coefficient (log Pow): Not determined
Flash Point: Not flammable
Decomposition Temperature: Above 110°C
Appearance: Hygroscopic solid
Evaporation Rate: Not applicable for solids
Chemical Stability: Stable at room temperature under normal handling and storage conditions
Reaction Hazards: May react exothermically with acids or oxidizers; forms toxic gases (fumes of HCl, NOx) on thermal decomposition
Conditions to Avoid: Excessive heat, moisture, incompatibles, exposure to air for prolonged periods
Incompatible Materials: Strong acids, strong oxidizers, reducing agents, anionic surfactants (may cause precipitation)
Hazardous Decomposition Products: Hydrogen chloride, benzyl compounds, nitrogen oxides, carbon monoxide and dioxide
Polymerization: No known hazardous polymerization
Acute Toxicity: Oral LD50 (rat) estimated 300–1000 mg/kg
Skin Corrosion/Irritation: Strongly corrosive to skin, may cause deep tissue damage
Eye Damage/Irritation: Causes permanent eye injury even with short exposure
Inhalation: Inhalation of mist or dust can trigger coughing, wheezing, pulmonary edema
Chronic Effects: Repeated exposures can produce dermatitis, respiratory tract damage, possible liver or kidney effects in animal studies
Sensitization: Not considered a sensitizer due to detergent properties, but some individuals might report irritation
Carcinogenicity: No data showing carcinogenic potential; not listed by IARC, NTP, OSHA
Mutagenicity: No mutagenic effects reported in standard tests
Reproductive Toxicity: Insufficient data; not classified for reproductive toxicity
Target Organ Effects: Corrosive effects on gastrointestinal tract, skin, eyes, and respiratory tract
Aquatic Toxicity: Toxic to aquatic organisms with long lasting effects; EC50 (algae) estimated 0.1–1 mg/L; LC50 (fish) 0.6–1.2 mg/L (acute exposures, species-dependent)
Persistence and Degradability: Moderately persistent; primary biodegradation in aerobic conditions possible but slow, typical rates in 20–40 days range
Bioaccumulation: Potential for low to moderate bioaccumulation in aquatic organisms; log Kow values not favorable for rapid biomagnification
Mobility in Soil: Strong adsorption to soil particles; transport in groundwater unlikely except in sandy or low-organic soils
Other Adverse Effects: Product may cause toxic foam formation in waste treatment, reduce dissolved oxygen in water, harm beneficial bacteria in sewage processes
Precautions: Prevent uncontrolled environmental release, collect all washings, and treat as hazardous waste
Waste Treatment Methods: Incineration in approved facility for organic chemical wastes or landfilling according to local regulation, do not empty undiluted into drains
Contaminated Packaging: Rinse thoroughly, dispose in accordance with local, national regulations
Disposal of Product: Do not mix with incompatible wastes, label as hazardous chemical waste
Special Instructions: Dilute solutions may require chemical neutralization before disposal, consult waste disposal specialist
Regulatory Compliance: Confirm disposal method under national and local environmental waste codes
UN Number: 2923
Proper Shipping Name: Corrosive Solid, Toxic, N.O.S. (Benzyldimethylstearylammonium Chloride Monohydrate)
Transport Hazard Class: 8 (Corrosive), 6.1 (Toxic), packing group II
Labels Required: Corrosive, Toxic, Marine Pollutant
Hazard Identification Number: 86
Sea, Air and Road Transport: Regulated under ADR/RID, IMDG, IATA regulations
Environmental Hazards: Marine pollutant, special marking applies for bulk or packaged goods
Special Precautions: Secure packaging, segregate from acids and foodstuffs, emergency plans for unintentional release
U.S. EPA TSCA Status: Listed
SARA Title III: Not subject to the reporting requirements of SARA Section 313
OSHA: Considered a hazardous chemical under OSHA regulations
EU REACH: Registered or pre-registered, subject to restrictions on hazardous mixtures
Classification and Labelling: In compliance with GHS, CLP, and local chemical safety legislation
Other Regulations: Marine pollutant, restrictions may apply for concentrations in consumer products
Workplace Monitoring: Regular risk assessments required by health and safety authorities
Labeling: Product must maintain original GHS and hazard labeling throughout transport and storage, safety instruction sheets to accompany bulk shipments
