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Product Name: 3-Aminopropyltriethoxysilane
Chemical Formula: C9H23NO3Si
Synonyms: γ-Aminopropyltriethoxysilane, APTES
CAS Number: 919-30-2
Application: Used in adhesives, sealants, surface treatments, organic synthesis
Supplier Details: Always verify company, emergency contact phone, and address on packaging
GHS Classification: Skin Corrosion/Irritation Category 1B; Eye Damage/Irritation Category 1; Acute Toxicity – Category 4 (inhalation); Category 4 (oral)
Pictograms: Corrosive, Exclamation Mark
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage; Harmful if swallowed or inhaled; May cause respiratory irritation
Precautionary Statements: Wear protective gloves, protective clothing, eye protection, and face protection; Avoid breathing vapors/mist; Wash hands thoroughly after handling; Store locked up; Dispose of contents/container in accordance with local regulations
Chemical Name: 3-Aminopropyltriethoxysilane
CAS: 919-30-2
Concentration: 98% or higher (specific concentration may appear on supplier’s certificate)
Impurities: Trace alcohols from hydrolysis may be present; no additional ingredients typically noted above 1%
General: Remove contaminated clothing immediately and discard or wash thoroughly before reuse
Inhalation: Move affected person to fresh air, allow rest in comfortable position, seek medical attention if symptoms develop
Skin Contact: Rinse skin with copious water and soap for at least 15 minutes, remove contaminated clothing, seek attention for burns
Eye Contact: Rinse eyes with plenty of clean water for a minimum of 15 minutes, lifting eyelids, obtain medical care without delay
Ingestion: Never induce vomiting, rinse mouth, seek immediate medical attention, do not give food or drink unless advised by a medical professional
Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical powder, or carbon dioxide
Unsuitable Media: Do not use water jet since the product can react with water to form flammable vapors
Hazardous Combustion Products: Nitrogen oxides, silicon oxides, carbon oxides, ammonia
Fire/Explosion Hazards: Vapors may form explosive mixtures with air in poorly ventilated spaces, closed containers may rupture due to pressure build-up
Protective Equipment: Wear self-contained breathing apparatus and full protective gear to avoid skin and respiratory contact
Special Procedures: Cool fire-exposed tanks with water spray from a safe distance, prevent runoff into sewers and waterways
Personal Protection: Evacuate area, keep unnecessary personnel away, wear gloves, goggles, and chemical-resistant clothing, avoid breathing mist or vapor
Environmental Precautions: Prevent further leakage or spillage if safe, ensure product does not reach drains or watercourses, notify environmental authorities if significant release occurs
Cleanup Methods: Absorb with inert material (dry sand, earth), collect in suitable waste container, ventilate area, wash spill site with water after material pickup is complete
Safe Handling: Open and use containers in a well-ventilated area, avoid skin and eye contact, never breathe vapor or mist, wash hands after use
Storage Conditions: Keep container tightly closed in cool, dry, and well-ventilated place, avoid storage near acids, water, moisture, or incompatible materials, store away from food and beverages, label containers clearly
Hygiene: Keep separate from work areas where food and beverages are stored or consumed, maintain emergency eyewash and shower stations nearby
Engineering Controls: Provide effective local exhaust or general ventilation, use closed systems where feasible
Protective Equipment: Wear nitrile gloves, safety goggles, chemical-resistant apron, and suitable footwear
Respiratory Protection: Use NIOSH or equivalent approved respirators during operations causing high vapor or mist concentrations
Exposure Limits: No specific occupational exposure limit assigned; minimize exposure as a general rule for handling reactive chemicals
Environmental Controls: Avoid discharge to the environment, handle waste solutions according to local regulations
Appearance: Colorless to pale yellow transparent liquid
Odor: Amine-like, slight
Odor Threshold: Not established
pH: Not determined (hydrolyzes in water)
Melting Point: -70°C
Boiling Point: 217°C at 1013 hPa
Flash Point: 98°C (closed cup)
Evaporation Rate: Not available
Flammability: Flammable liquids and vapor may form under certain conditions
Upper/Lower Explosive Limits: Not established
Vapor Pressure: 0.3 hPa at 20°C
Vapor Density: >1 (air = 1)
Solubility: Hydrolyzes in water, yields silanols and ethanol
Partition Coefficient (n-octanol/water): Not available
Autoignition Temperature: Not determined
Decomposition Temperature: Not determined
Viscosity: Not measured
Chemical Stability: Stable in sealed containers under recommended storage
Reactivity: Reacts with moisture, releasing heat and ethanol, hydrolyzes to silanols
Incompatible Materials: Strong acids, strong bases, oxidizers, moisture
Hazardous Decomposition Products: Alcohols, nitrogen oxides, silicon oxides, ammonia
Polymerization: No hazardous polymerization likely, but contact with moisture greatly accelerates hydrolysis
Routes of Exposure: Inhalation, skin, eyes, ingestion
Acute Toxicity: Harmful if swallowed or inhaled, corrosive to eyes and skin (oral LD50 rat: ~1780 mg/kg; inhalation LC50 rat: >5.3 mg/L/4h)
Skin Corrosivity: Strongly corrosive, causes severe burns
Eye Damage: Severe damage likely with direct contact; can lead to permanent injury
Chronic Effects: Prolonged or repeated skin contact may cause dermatitis or sensitization
Symptoms: Burning, pain, redness, blisters on skin; permanent eye damage; respiratory irritation if inhaled
Ecotoxicity: Harmful to aquatic organisms (LC50, Fish, 96h: >934 mg/L); large spills can disrupt aquatic systems
Persistence and Degradability: Product degrades by hydrolysis, silanols remain and can bind to soil particles
Bioaccumulation: Not expected due to hydrolysis and low log Kow
Mobility in Soil: May leach into soil before hydrolysis; more likely to attach to surfaces after breakdown
Other Concerns: Avoid uncontrolled release to environment; downstream effects possible in cases of spills
Waste Treatment: Dispose of in accordance with local, state, and federal regulations
Recommended Disposal: Incineration in approved facility; triple rinse and puncture empty containers before recycling or landfilling
Precautions: Prevent direct release to sewer systems, watercourses, or soil; never pour unused product into drains
Contaminated Packaging: Treat as hazardous waste after proper emptying and rinsing
UN Number: UN 2735
Proper Shipping Name: Amines, liquid, corrosive, n.o.s. (3-Aminopropyltriethoxysilane)
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: II
Environmental Hazards: Not marine pollutant; larger spills may result in environmental damage
Special Precautions: Secure containers, avoid physical damage; follow international, national, and local regulations for-packaging and segregation
GHS: Classified as hazardous by Regulation (EC) No. 1272/2008
OSHA: Considered hazardous under OSHA Hazard Communication Standard
Inventory Status: Listed in TSCA, EINECS/ELINCS, AICS, DSL, and other chemical inventories
SARA Title III: Not listed under Sections 302, 304, or 313, but always review supplier documentation
California Proposition 65: Not known to contain chemicals subject to Proposition 65 warning
Other: Review local regulations, including workplace and environmental protections as they may vary by jurisdiction
