Product Name: Aminosilane Reactant
Chemical Name: Aminopropyltriethoxysilane
Synonyms: Silane, 3-aminopropyltriethoxy-
CAS Number: 919-30-2
Manufacturer: Major chemical suppliers offer aminosilane compounds for laboratory and industry.
Recommended Use: Used as a coupling agent, adhesion promoter, surface modifier in polymer and coatings applications.
Emergency Phone: Provided by supplier, typically accessible 24 hours for safety incidents.
Classification: Causes skin irritation, serious eye damage, respiratory irritation. Flammable liquid and vapor.
Label Elements: Signal word: Danger. Hazard pictograms for corrosive, health hazard, and flame.
Hazard Statements: Harmful if inhaled or swallowed. Causes burns to skin and eyes. May cause respiratory tract irritation.
Precautionary Statements: Avoid breathing vapors. Wear chemical resistant gloves and goggles. Use only outdoors or in well-ventilated area.
Other Hazards: Contact with moisture releases hazardous gases including ethanol and corrosive vapors.
Chemical Name: 3-Aminopropyltriethoxysilane
CAS Number: 919-30-2
Concentration: 98–100%
Other Components: May contain minor amounts of related alkoxysilanes and residual alcohols.
Impurities: Trace byproducts from synthesis possible, usually alcohols like ethanol.
General Advice: Move affected person to fresh air immediately. Remove contaminated clothing.
Eye Contact: Rinse cautiously with water for at least 15 minutes. Hold eyelids open. Seek medical attention right away.
Skin Contact: Wash with plenty of soap and water. Remove contaminated clothing and shoes. Seek medical help if skin irritation develops.
Inhalation: Move person to fresh air. Keep at rest in a position comfortable for breathing. If symptoms persist, get medical advice.
Ingestion: Rinse mouth. Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Contact poison center or doctor.
Extinguishing Media: Water fog, dry chemical, foam, carbon dioxide.
Special Hazards: Vapors can travel and ignite at distant locations. Container may explode under fire due to pressure buildup.
Hazardous Combustion Products: Releases silicon oxides, carbon oxides, nitrogen oxides, toxic vapors.
Protective Equipment: Wear full firefighting turnout gear and self-contained breathing apparatus. Avoid inhalation of combustion products.
Advice: Cool exposed containers with water spray to prevent pressure buildup and rupture.
Personal Precautions: Evacuate all non-essential personnel. Wear chemical-resistant clothing, gloves, goggles, and suitable respirator.
Environmental Precautions: Prevent spillage from reaching sewer systems, surface water, or soil.
Methods for Containment: Absorb using inert materials such as sand or earth. Dike spill area.
Cleanup Methods: Collect absorbed material in properly labeled containers. Use non-sparking tools.
Reference to Other Sections: Dispose of waste in accordance with local regulations. See Section on Disposal Considerations.
Precautions for Safe Handling: Ground containers when transferring. Use explosion-proof equipment. Avoid all contact with skin, eyes, or clothing.
Conditions for Safe Storage: Keep in original container tightly closed, stored in cool, well-ventilated area, away from moisture and incompatible substances such as acids and oxidizers.
Storage Class: Flammable liquid storage, separate from foodstuffs and incompatible chemicals.
Incompatible Materials: Water, acids, oxidizing agents, strong bases.
Hygiene Measures: Wash hands and face thoroughly after handling. No eating or drinking in the chemical work area.
Engineering Controls: Use local exhaust ventilation to keep air concentrations low. Provide eyewash and safety shower stations.
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), safety goggles or face shield, full skin protection, flame-resistant lab coat.
Respiratory Protection: Approved vapor respirator if ventilation is inadequate.
Occupational Exposure Limits: No specific OSHA or ACGIH limits for aminosilanes, but maintain airborne concentrations as low as possible.
Control of Environmental Exposure: Do not allow material to be released to the environment without proper governmental permits.
Appearance: Colorless to pale yellow transparent liquid
Odor: Ammonia-like, sharp odor
Odor Threshold: Detectable at low concentrations
pH: 10.5–12 (in aqueous solution)
Melting Point/Freezing Point: No data available, generally below 0°C
Boiling Point: 217–220°C at standard pressure
Flash Point: 96°C (closed cup)
Evaporation Rate: Not fast compared to water
Flammability (solid, gas): Not applicable. Liquid is flammable.
Upper/Lower Flammability: Upper: 12.3% (vol), Lower: 1.3% (vol)
Vapor Pressure: 0.13 hPa at 20°C
Vapor Density: Heavier than air
Solubility in Water: Reacts with water
Partition Coefficient (log Kow): 0.2 (estimated)
Autoignition Temperature: 300–340°C
Decomposition Temperature: No definite value, decomposes slowly from 200–250°C
Viscosity: 2.0–3.0 mPa.s at 25°C
Density: 0.95 g/cm³ at 20°C
Chemical Stability: Stable under recommended storage conditions. Sensitive to humid air and moisture, releasing hazardous substances.
Reactivity: Reacts strongly with water, acids, oxidizers, generating heat and potentially toxic vapors.
Conditions to Avoid: High humidity, elevated temperatures, contact with moisture, open flames, ignition sources.
Incompatible Materials: Acids, strong bases, oxidizers, water.
Hazardous Decomposition Products: Ammonia, ethanol, silicon oxides, nitrogen oxides, potentially toxic organic vapors.
Acute Toxicity: Oral LD50 in rats: 2295 mg/kg; Dermal LD50 in rabbits: 4076 mg/kg.
Routes of Exposure: Inhalation, ingestion, skin and eye contact.
Symptoms of Exposure: Severe burning sensation in eyes, skin redness, chemical burns, respiratory tract irritation, coughing, difficulty breathing.
Chronic Effects: Prolonged exposure may cause organ damage such as to the liver and kidneys. Skin sensitization or allergic reactions possible.
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, OSHA.
Mutagenicity and Reproductive Toxicity: Data on genetic toxicity limited, but no strong evidence for mutagenic or reproductive effects.
Other Effects: Target organs include respiratory system, eyes, skin, liver, kidneys.
Toxicity: Harmful to aquatic life, causes long-term adverse effects in the aquatic environment. Fish (LC50): 934 mg/L (96h, Brachydanio rerio).
Persistence and Degradability: Undergoes hydrolysis in water to form silanols; silanols further condense or degrade to silica.
Bioaccumulative Potential: Low, based on log Kow and rapid hydrolysis.
Mobility in Soil: Hydrolysis products may be mobile until further reaction occurs.
Other Adverse Effects: Release to environment should be prevented, especially near water sources.
Waste Treatment Methods: Chemical waste should be disposed at permitted facilities. Dilute with water before disposal only if allowed by regulations.
Contaminated Packaging: Containers, regardless of contents, require handling as hazardous waste.
Special Instructions: Do not dispose through normal sewer. Incineration preferred in facilities that comply with local, regional, or national regulations.
Precautions: Handle residues according to safety guidance for toxic and flammable chemicals.
Regulatory References: Observe all applicable federal, state, and local environmental regulations.
UN Number: UN 1993
UN Proper Shipping Name: Flammable liquid, n.o.s. (Aminopropyltriethoxysilane)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Marine Pollutant: Not regulated as marine pollutant but avoid release to water.
Precautions for Transport: Keep containers upright and tightly closed. Secure in transit.
Shipping Label: Flammable liquid label required on outer packaging.
Special Provisions: Subject to international, national, and local regulations for hazardous material transport.
OSHA: Considered hazardous under OSHA regulations (29 CFR 1910.1200).
TSCA: Listed in the U.S. Toxic Substances Control Act inventory.
EINECS/ELINCS: Listed.
SARA Title III: Subject to SARA Section 313 reporting.
California Proposition 65: No components require warning.
WHMIS (Canada): Classified as D2B, B3.
Other Regulation: Meets GHS requirements for labeling and classification.
International Restrictions: Regulated in EU, Canada, Australia, and many Asian countries under hazardous substances regulations.
