Product Name: N-Triethoxyoctylsilane
Chemical Formula: C14H32O3Si
Other Names: Octyltriethoxysilane
CAS Number: 2943-75-1
Recommended Use: Surface modifier, water repellent agent, material in paints and coatings, adhesion promoter, plastic and rubber additive
Manufacturer: Supplier details available on request
Contact Information: Emergency phone number and detailed supplier address should be checked on purchase
GHS Classification: Flammable liquids, Skin irritation, Eye irritation, Specific target organ toxicity, Single exposure
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause respiratory tract irritation, flammable liquid and vapor, harmful if swallowed
Pictogram: Flame, Exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames, no smoking, ground and bond containers during transfer, wear personal protective equipment, wash thoroughly after handling, avoid breathing vapors and mist, use only outdoors or in well-ventilated area
Chemical Name: N-Triethoxyoctylsilane
Common Synonyms: n-octyltriethoxysilane
CAS Number: 2943-75-1
Percentage: Typically greater than 97%
Impurities: May include small percentages of residual solvents or byproducts; check batch certificate for details
General Advice: Remove contaminated clothing and shoes, get medical attention if symptoms develop or persist
Eye Contact: Rinse with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek medical advice if irritation persists
Skin Contact: Wash with plenty of soap and water, seek medical advice for persistent irritation
Inhalation: Move to fresh air, keep victim at rest and provide oxygen if breathing is difficult, seek medical attention if symptoms continue
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical attention immediately
Most Important Symptoms: Redness, irritation, cough, possible lung irritation on significant exposure
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical powder, carbon dioxide, sand
Unsuitable Extinguishing Media: Water jet direct stream may spread the fire
Specific Hazards: Vapors can form explosive mixtures with air, combustion may produce carbon oxides, silicon oxides, smoke
Special Protective Equipment for Firefighters: Full protective clothing, self-contained breathing apparatus
Precautions: Containers may explode in heat of fire, move container from fire if safe, cool containers with water spray
Personal Precautions: Evacuate area, ventilate, eliminate ignition sources, wear suitable protective equipment, avoid breathing vapor or mist
Environmental Precautions: Prevent entry into drains, water courses, and soil
Methods for Cleaning Up: Absorb with inert material (vermiculite, sand), sweep or shovel into suitable closed containers, wash spill site with water and detergent, dispose of waste according to local regulations
Handling: Use only in well-ventilated areas, avoid breathing vapor and contact with eyes, skin, and clothing, ground and bond containers when pouring, use antistatic tools, wash hands after use, remove contaminated clothing
Storage: Store in cool, dry, well-ventilated area, keep away from sources of ignition and direct sunlight, store in tightly closed original container, incompatible with strong oxidizing agents, acids, moisture, store away from food and drink, do not reuse container, label shelves clearly
Engineering Controls: Mechanical ventilation or local exhaust, safety shower and eyewash station nearby
Respiratory Protection: Approved respirator for organic vapors may be necessary if ventilation is not sufficient
Eye Protection: Safety goggles or face shield
Skin Protection: Chemical-resistant gloves (nitrile or neoprene), protective clothing to prevent skin contact
Hygiene: Keep work area clean, do not eat, drink, or smoke while using, wash thoroughly after handling, remove contaminated clothing
Exposure Limits: No established occupational exposure limits for this material, good industrial hygiene recommended
Appearance: Clear, colorless liquid
Odor: Characteristic, mild
Odor Threshold: Not available
pH: Not applicable
Melting Point/Freezing Point: -80°C (approximate, varies by purity)
Boiling Point: 260°C
Flash Point: 74°C (closed cup)
Evaporation Rate: Not established
Flammability: Flammable
Upper/Lower Flammable Limits: Not established
Vapor Pressure: Low at room temperature
Vapor Density: Heavier than air
Relative Density: 0.88–0.90 (water = 1)
Solubility: Reacts slowly with water, soluble in organic solvents
Partition Coefficient (n-octanol/water): Expected to be high
Auto-ignition Temperature: >200°C
Decomposition Temperature: Above 200°C
Viscosity: Low
Reactivity: Reacts with water to form ethanol and silanol; generates heat
Chemical Stability: Stable under normal conditions of handling and storage
Possibility of Hazardous Reactions: Hydrolyzes on contact with moisture, forms flammable ethanol vapors
Conditions to Avoid: Moisture, heat, ignition sources, direct sunlight, contact with air and oxidizers
Incompatible Materials: Strong acids, alkalis, oxidizing agents, water
Hazardous Decomposition Products: Carbon oxides, silicon oxides, ethanol, organic vapors
Acute Toxicity: LD50 (oral, rat) estimated > 7000 mg/kg
Skin Corrosion/Irritation: May cause skin irritation on direct contact
Serious Eye Damage/Irritation: Causes moderate eye irritation
Respiratory or Skin Sensitization: Not classified as sensitizer; inhalation may irritate mucous membranes
Chronic Toxicity: No known chronic effects; prolonged exposure may cause skin defatting and dermatitis
Carcinogenicity: Not listed as carcinogen by IARC, ACGIH, NTP, or OSHA
Mutagenicity: No information indicating mutagenic potential available
Reproductive Toxicity: Not expected to cause reproductive toxicity
Ecotoxicity: Low acute toxicity to aquatic life; may cause long-term adverse effects if released in significant quantities
Persistence and Degradability: Undergoes slow hydrolysis, then further biodegradation
Bioaccumulative Potential: Likely to be bioaccumulative due to partition coefficient
Mobility in Soil: Expected to have low mobility, binds to organic matter
Other Adverse Effects: Large spills may form surface films on water, operates as a barrier to oxygen transfer to aquatic organisms
Waste Treatment Methods: Dispose of in accordance with local, state, national regulations, incinerate or use specialty chemical waste disposal facility
Contaminated Packaging: Empty containers should be drained thoroughly and disposed of by qualified professionals
Special Precautions: Do not discharge into drains, surface water, or soil
Disposal Recommendations: Engage certified waste disposal contractor for chemical and containers
UN Number: UN1993
Proper Shipping Name: Flammable Liquid, N.O.S. (contains Octyltriethoxysilane)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Labels: Flammable liquid
Environmental Hazards: Not regulated as marine pollutant under IMDG
Special Transport Precautions: Avoid transport with incompatible substances, keep containers upright, secure against shifting, transport in accordance with ADR/RID, IMDG, IATA regulations
TSCA Inventory (USA): Listed
REACH Status (EU): Registered or pre-registered
Other Regulatory Listings: Present on most national chemical inventories (Canada DSL, Australia AICS, Japan ENCS, Korea ECL, China IECSC)
SARA Title III (USA): Not regulated under Sections 302/304/313
California Proposition 65: Substance not listed
Labeling Requirements: Follows OSHA, EU CLP, GHS labeling
Other Regulatory Information: Ensure local, national, and international regulations on flammable substances and environmental release are followed; specific regional requirements may apply depending on intended use and volume
