Product Name: N-Dodecyltriethoxysilane
Synonyms: Triethoxy(dodecyl)silane
CAS Number: 18536-91-9
Recommended Use: Industrial use as a surface modifier, silane coupling agent
Manufacturer: Contact detailed on packaging label
Emergency Telephone: Refer to the product datasheet or local poison control center
Classification: Flammable liquid (Category 3), Skin irritation (Category 2), Eye irritation (Category 2A)
Signal Word: Warning
Hazard Statements: Causes skin irritation, causes serious eye irritation, flammable liquid and vapor
Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from ignition sources, wear protective gloves, wash exposed skin thoroughly after handling, avoid breathing vapor or mist
Routes of Exposure: Inhalation, skin and eye contact
Chemical Name: N-Dodecyltriethoxysilane
Common Name: Dodecyltriethoxysilane
Concentration: 100%
CAS Number: 18536-91-9
Impurities or Stabilizing Additives: None reported by major suppliers
Inhalation: Move the person to fresh air, assist breathing if difficult, call medical attention if symptoms persist
Skin Contact: Wash the area with plenty of water and soap, remove contaminated clothing, seek medical attention if irritation continues
Eye Contact: Rinse eyes with water for at least fifteen minutes, hold eyelids apart, seek medical help if irritation remains
Ingestion: Do not induce vomiting, rinse mouth, contact a physician immediately
Most Important Symptoms and Effects: Irritation, redness, and discomfort at contact sites
Advice For Immediate Attention: Show this document to emergency responders and follow facility protocols
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, foam, or water spray for larger fires
Unsuitable Media: Straight streams of water may spread the product
Fire Hazards: Vapors may form explosive mixtures with air, combustion produces hazardous gases such as silicon oxides and carbon oxides
Protective Equipment: Firefighters should use full protective gear and self-contained breathing apparatus
Special Precautions: Water runoff may cause environmental contamination, control fire-water accordingly
Personal Precautions: Use appropriate personal protective equipment, ventilate area, eliminate possible sources of ignition
Environmental Precautions: Prevent liquid from entering drains, surface waters, or soil, contain spills with inert absorbent
Cleanup Methods: Stop leak if safe, cover with non-combustible absorbent (sand, earth), collect, label, and dispose of in approved chemical waste container
Reference to Other Sections: See section on exposure controls and disposal considerations for additional guidance
Handling Precautions: Avoid contact with skin and eyes, use in well-ventilated areas, do not breathe vapors, ground and bond containers during transfer
Hygiene Measures: Wash hands after handling, remove contaminated clothing before entering eating areas
Storage Requirements: Keep in original, tightly closed container, store in cool, dry, well-ventilated location away from heat, sparks, open flame, and incompatible materials such as strong acids and bases
Incompatible Materials: Moisture, oxidizing agents, strong acids, and bases may react with the compound
Permissible Exposure Limits: No occupational exposure limits established for this specific compound
Engineering Controls: Use local exhaust ventilation, ensure eyewash stations and safety showers are available
Personal Protective Equipment: Wear chemical-resistant gloves (such as nitrile), safety goggles, splash proof apron, use in areas with proper fume extraction
Respiratory Protection: Use approved respirators if exposure limits are exceeded or during spill cleanup
Environmental Exposure Controls: Prevent emission to the environment by using closed systems and following good disposal practices
Appearance: Clear to pale yellow liquid
Odor: Mild, fruity
Odor Threshold: Not established
pH: Not applicable (substantially nonpolar organic)
Melting Point/Freezing Point: Data not available
Boiling Point/Range: Roughly 310°C (590°F)
Flash Point: About 114°C (237°F) (closed cup estimate)
Evaporation Rate: Not determined
Flammability: Flammable liquid and vapor
Vapor Pressure: <0.1 hPa at 20°C
Vapor Density: Heavier than air
Relative Density: About 0.85 g/cm³ at 25°C
Solubility in Water: Reacts slowly; practically insoluble
Partition Coefficient (n-octanol/water): Estimated as log Kow >7
Auto-ignition Temperature: Data not determined
Decomposition Temperature: No reliable data
Viscosity: Moderate, oily liquid
Chemical Stability: Stable under recommended storage conditions
Hazardous Reactions: Avoid contact with water, acids, bases, and oxidizers; hydrolyzes slowly in presence of water, generating ethanol
Conditions to Avoid: Heat, sparks, open flames, and moisture
Hazardous Decomposition Products: Carbon oxides, silicon dioxide, ethanol vapors
Polymerization: No dangerous polymerization expected under normal conditions
Acute Toxicity: Low expected oral toxicity based on related organosilanes (Oral rat LD50 >2,000 mg/kg)
Skin Corrosion/Irritation: Irritates skin with prolonged contact
Serious Eye Damage/Irritation: Causes irritation and redness
Respiratory Sensitization: Vapor or mist may irritate the airways; no known sensitization cases
Chronic Toxicity: No comprehensive long-term studies available; not listed as a carcinogen or mutagen by IARC, NTP, or OSHA
Other Effects: Prolonged skin contact can produce defatting and drying, repeated exposures increase sensitization risk
Aquatic Toxicity: Low water solubility, not readily biodegradable, toxic to aquatic life with long lasting effects
Persistence and Degradability: Hydrolyzes slowly in water to silanols; persistence likely in soil or sediment
Bioaccumulation Potential: Likely to bioaccumulate based on high log Kow estimates
Mobility in Soil: Limited because of adsorption to sediment and organic matter
Other Adverse Effects: Avoid uncontrolled release to the environment, siloxane breakdown may yield microplastic-like residues
Waste Disposal Methods: Dispose of in accordance with local, regional, and national regulations, incineration may be preferred method for industrial waste
Product Disposal: Consult licensed waste disposal service to safely handle and process any residual chemical
Packaging Disposal: Empty containers can trap vapors; triple-rinse, puncture, and recycle or landfill according to rules
Precautions: Do not allow release to sewers or surface waters, control measures should match chemical hazard level
UN Number: 1993
UN Proper Shipping Name: Flammable liquid, n.o.s. (contains N-Dodecyltriethoxysilane)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Labels: Flammable liquid symbol on outer packaging
Special Precautions: Product containers should be kept upright and secure during transit
Marine Pollutant: Not classified as a marine pollutant, but avoid accidental spills
Transport Regulation Adherence: Handle according to international transport agreements (IMDG, IATA, ADR)
TSCA Inventory: Listed
REACH Status (EU): Registered or pre-registered
OSHA Hazard Category: Flammable Liquid, Irritant
SARA 311/312: Hazard categories for acute health, fire hazard
California Proposition 65: No significant risk level (NSRL) listed
Other National Regulations: Refer to country-specific guidance for handling, storage, and reporting
Workplace Labeling: Display hazard communication program and chemical safety protocols
