Product Name: Butylamine Methyl Triethoxy Silane
Chemical Formula: C11H27NO3Si
CAS Number: 123456-78-9
Synonyms: N-Butylaminomethyltriethoxysilane
Recommended Use: Coupling agent for adhesives, sealants, coatings, surface treatment
Supplier Details: Industrial Chemical Supplier, Emergency Number: 24-hour CHEMTREC 1-800-424-9300
Relevant Identified Uses: Intermediate in chemical manufacturing, surface modifying agent, adhesion promoter in construction and automotive industries.
Classification: Flammable liquid (Category 3), Acute toxicity (oral, Category 3), Serious eye irritation (Category 2A), Skin irritation (Category 2), Specific target organ toxicity – single exposure (Category 3, respiratory)
Pictograms: Flame, Exclamation mark, Health hazard
Signal Word: Danger
Hazard Statements: Causes skin and serious eye irritation. Toxic if swallowed, inhaled, or absorbed through the skin. Flammable liquid and vapor. May cause respiratory irritation.
Precautionary Statements: Avoid all contact with skin and eyes. Handle only with protective equipment. Use in well-ventilated environment. Keep away from open flames, hot surfaces and sources of ignition.
Chemical Name: N-Butylaminomethyltriethoxysilane
CAS Number: 123456-78-9
Concentration: ≥ 95% by weight
Impurities: Ethanol (<1%), trace water (<0.5%), unspecified amine residues (<1%)
Stabilizers: None added
Mixture: Single substance, not a mixture
Inhalation: Move person to fresh air at once. Keep individual warm and at rest. Seek immediate medical aid for any breathing difficulty or signs of respiratory distress.
Skin Contact: Remove contaminated clothing and shoes. Flush skin thoroughly with plenty of water and soap for 15 minutes. Get medical attention for burns, irritation or persistent redness.
Eye Contact: Rinse cautiously with water for several minutes, holding eyelids open. Seek immediate medical advice if irritation persists or vision changes.
Ingestion: Do not induce vomiting. Rinse mouth thoroughly with water. Offer water to dilute swallowed product but do not attempt to administer liquids to an unconscious person. Contact poison control and seek urgent medical attention.
Most Important Symptoms: Burning of respiratory tract, skin redness or blistering, intense eye pain or blurred vision, abdominal cramping, nausea.
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical powder, carbon dioxide. Water spray may be used for cooling tanks only.
Unsuitable Media: Direct water stream, which may spread fire.
Specific Hazards: Produces toxic and irritating fumes under fire conditions. Vapors may form explosive mixtures with air.
Protective Equipment for Firefighters: Full protective gear, self-contained breathing apparatus required.
Special Precautions: Remove containers from fire area if safe. Apply cooling water spray to containers at risk of explosion. Do not allow runoff from fire control to enter drains or watercourses.
Personal Precautions: Evacuate area of unprotected personnel. Wear respirator, chemical resistant gloves, goggles, and coveralls.
Environmental Precautions: Prevent further spillage or leakage if safe. Do not permit product to enter water sources, drains, or soil.
Methods for Containment: Dike spillage using inert absorbent material such as sand or earth. Collect and place in suitable chemical waste container for disposal.
Cleaning: Ventilate spill area. Wash with strong detergent and water. Dispose of as hazardous waste.
Other Advice: Remove ignition sources. Eliminate static charges by grounding containers and equipment. Report major spills as required by local regulations.
Safe Handling: Use only in well-ventilated areas with appropriate exhaust systems. Avoid inhaling vapors. Do not eat, drink, or smoke while handling.
Storage Conditions: Keep container tightly closed, away from incompatible materials such as strong acids, oxidizers, and moisture. Store in a cool, dry, well-ventilated place, with proper grounding to prevent static discharge.
Incompatibilities: Avoid water, acids, oxidizing and reducing agents.
Other Requirements: Label containers clearly. Inspect regularly for leaks or degradation.
Packaging: Use containers made of compatible materials such as stainless steel or HDPE.
Exposure Limits: No specific occupational exposure limits established. Recommend ACGIH threshold limits for amines (refer to local regulation).
Engineering Controls: Use local exhaust ventilation to maintain airborne levels below recommended exposure limits. Emergency showers and eyewash stations should be nearby.
Respiratory Protection: Approved air-purifying respirators for organic vapor/amine compounds.
Skin Protection: Chemical-resistant gloves (nitrile, neoprene), long-sleeved clothing, lab apron.
Eye Protection: Tightly sealed goggles or face shield.
Hygiene Measures: Remove contaminated clothing immediately and wash before reuse. Wash hands thoroughly after handling.
Appearance: Clear to yellowish transparent liquid
Odor: Amine-like, pungent
Boiling Point: 215°C (estimated)
Melting Point: -60°C (estimated)
Flash Point: 65°C (closed cup)
Density: 0.912 g/cm³ at 20°C
Solubility: Hydrolyzes in water, soluble in alcohols, reacts with moisture
Vapor Pressure: 0.15 mmHg at 25°C (approximate)
Viscosity: Low, 2-4 mPa·s
pH: Not available
Partition Coefficient (log Kow): No data
Auto-ignition Temperature: 240°C
Decomposition Temperature: Decomposes over 215°C
Evaporation Rate: <1 (n-Butyl acetate=1)
Upper/Lower Flammability Limits: 1.1–9.7% (vol., estimated)
Chemical Stability: Stable under recommended storage conditions, sensitive to moisture.
Reactivity: Reacts with water, strong acids, and oxidizing agents. Can release hazardous gases (amines, ethanol, siloxanes) in contact with water.
Conditions to Avoid: Heat, flame, spark sources, humidity.
Hazardous Polymerization: Will not occur under normal handling.
Decomposition Products: Ethanol, siloxanes, nitrogen oxides, carbon monoxide, carbon dioxide.
Incompatible Materials: Acids, oxidizers, water, strong bases.
Acute Toxicity: Oral LD50 (rat): 357 mg/kg (typical for aminosilane analogs). Dermal LD50: 900 mg/kg (rabbit, estimated). Inhalation LC50 (rat): 635 ppm/4h (similar structures).
Skin Corrosion/Irritation: Causes skin irritation and possible chemical burns.
Serious Eye Damage/Irritation: Severe eye irritant. Can cause corneal damage.
Respiratory or Skin Sensitization: May result in delayed allergic reactions with recurrent exposure.
Chronic Effects: Repeated or prolonged exposure could cause central nervous system or liver impacts.
Carcinogenicity: Not classified as carcinogen by IARC, NTP, OSHA.
Mutagenicity: Not reported to cause germ cell mutations.
Reproductive Toxicity: No data available for reproductive effects.
Other Information: Seek medical advice for accidental exposures. Individual response varies widely.
Ecotoxicity (Aquatic): Harmful to aquatic life, fish LC50 60 mg/L (96h), daphnia EC50 17 mg/L (48 h), algal EC50 42 mg/L.
Persistence and Degradability: Rapidly hydrolyzes in water to siloxane derivatives and amine fragments, which may remain locally persistent.
Bioaccumulation Potential: Limited due to high hydrolysis rate and solubility in water; low log Kow.
Mobility in Soil: Moderate mobility, hydrolysis into less mobile fragments.
Other Adverse Effects: Volatile, can contribute to local air pollution. Avoid release to the environment. Notify authorities if large quantities enter waterways.
Waste Disposal: Collect and dispose in accordance with local, regional, and national regulations. Hazardous waste treatment facility required.
Container Handling: Containers should be emptied and triple rinsed before disposal. Do not cut, weld, or reuse containers unless thoroughly cleaned.
Recommended Disposal Methods: Incineration in appropriate chemical facility.
Environmental Precautions: Do not discharge into drains, soil, or surface water.
Other Recommendations: Consult licensed waste disposal company for compliance.
UN Number: UN 1993
Proper Shipping Name: Flammable liquid, n.o.s. (Contains N-Butylaminomethyltriethoxysilane)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: II
Marine Pollutant: Not classified as marine pollutant
Special Precautions: Keep away from food, incompatible chemicals, and heat during transport. Secure containers to prevent movement and spillage.
Labels: Flammable liquid, Toxic
Regulatory Transport Codes: IMDG, IATA, ADR compliance required.
OSHA Hazard Communication: Classified hazardous under OSHA regulations.
TSCA: Listed; all components appear on TSCA inventory.
EPA SARA Title III: Section 302/304 (EHS): Not listed; Section 313: Not listed.
EU Regulation: REACH-listed, hazard pictograms GHS02, GHS07.
Labeling Requirements: Comply with local, national, and supranational guidelines for chemical labeling.
Other Applicable Laws: Subject to workplace exposure controls, notification, and spill reporting in regulated jurisdictions.
State Inventory: Check specific state right-to-know safety listings.
Canadian WHMIS: B2 Flammable liquid, D2B Toxic material causing other toxic effects.
