Product Name: 3-(N,N-Dimethylaminopropyl)Aminopropyl Methyl Dimethoxysilane
Chemical Formula: C10H26N2O2Si
CAS Number: 3069-29-2
Synonyms: 3-(Dimethylaminopropyl)aminopropylmethyldimethoxysilane
Intended Use: Surface modifier, adhesion promoter, coupling agent for resins and polymers, used in industrial and research environments
Manufacturer Information: Include manufacturer’s name, address, emergency telephone number, and email contact on supplied documentation
Emergency Contact: Number and contact details as per supplier guidance
Date of Latest Revision: Confirm on primary documentation for regulatory compliance
GHS Classification: Flammable liquid (Category 3); Skin corrosion/irritation (Category 2); Serious eye damage/irritation (Category 2A); Acute toxicity, oral and inhalation (Category 4)
Label Elements: Signal Word: Warning
Hazard Statements: Flammable liquid and vapor, causes skin irritation, causes serious eye irritation, harmful if swallowed or inhaled
Precautionary Statements: Keep away from open flames and heat, use non-sparking tools, avoid breathing vapors, wear protective gloves, eye protection, work in well-ventilated areas
Pictograms: Exclamation mark, flame
Target Organs: Eyes, skin, respiratory system
Most Important Hazards: Vapors may spread along floors, contact with moisture releases methanol, can cause respiratory tract irritation
Chemical Name: 3-(N,N-Dimethylaminopropyl)Aminopropyl Methyl Dimethoxysilane
CAS Number: 3069-29-2
Concentration: ≥95% in most commercial blends
Impurities: Methanol (<2%), as a hydrolysis product
Other Components: Trace siloxane oligomers in some cases
Occupational Exposure Limits: Refer to methanol threshold limit values as a breakdown product
Inhalation: Remove person to fresh air, keep at rest, provide oxygen by trained personnel if breathing is difficult, seek immediate medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing, wash with plenty of soap and water, seek medical attention for irritation or burns
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses, seek medical attention if irritation continues
Ingestion: Rinse mouth with water, do not induce vomiting, seek immediate medical attention; methanol formed in the body may require urgent hospital treatment
Most Acute Symptoms: Burning, redness, coughing, headache, dizziness, possible gastrointestinal distress from methanol
Special Medical Treatment: Treat symptomatically, support airway and breathing, monitor for methanol poisoning in the case of ingestion or prolonged exposure
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, carbon dioxide, water mist (for cooling and vapor suppression only)
Unsuitable Extinguishing Media: Direct water jet
Specific Hazards: Produces toxic gases including carbon oxides, nitrogen oxides, silicon oxides, formaldehyde, and methanol vapor under fire conditions
Special Protective Equipment: Full protective gear and self-contained breathing apparatus for fire-fighters
Fire-Fighting Instructions: Evacuate area, contain runoff, cool exposed containers with water spray, control vapors
Explosion Data: Vapors may form explosive mixture with air near the flash point
Personal Precautions: Evacuate area, ventilate, use appropriate personal protective equipment (PPE) including gloves, goggles, respirator
Environmental Precautions: Prevent entry to sewers, soil, groundwater; notify authorities if large quantities enter the environment
Containment: Stop leak if without risk, contain spill with inert absorbent such as sand or earth
Cleanup Methods: Absorb with inert material, place in chemical waste drum; clean contaminated area with detergent; provide adequate ventilation
Disposal of Collected Material: Follow Section 13 Disposal Considerations
Special Spillage Procedures: For vapor-heavy spills, use spark-free tools, monitor air for methanol in enclosed areas
Precautions for Safe Handling: Avoid inhalation of vapors and contact with skin and eyes, use local exhaust to minimize airborne concentrations, do not handle near ignition sources or open flames, keep container tightly closed when not in use
Advice on General Occupational Hygiene: Do not eat, drink, or smoke during use, wash hands thoroughly after handling
Conditions for Safe Storage: Store in original container in a cool, dry, well-ventilated place away from incompatible substances (acids, bases, oxidizers)
Storage Temperatures: Keep below 30°C for shelf stability
Storage Class: Flammable liquid
Containers: Use corrosion-resistant packaging with effective sealing, keep out of direct sunlight
Engineering Controls: Use with explosion-proof ventilation, provide eyewash stations and safety showers in the immediate area of use
Occupational Exposure Limits: Observe permissible exposure limits for methanol since hydrolysis can release it, recommended time-weighted averages per regional or national regulation
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), splash-proof goggles, long-sleeved clothing, chemical apron
Respiratory Protection: NIOSH-approved organic vapor respirator under inadequate ventilation
Environmental Controls: Avoid emissions, treat effluents in accordance with local wastewater regulations
Appearance: Clear to slightly yellow liquid
Odor: Ammoniacal, sharp characteristic
Odor Threshold: Not available
pH: Not applicable in neat form
Melting Point: Usually below -50°C
Boiling Point: Around 100–200°C
Flash Point: 60°C (closed cup), may vary by purity
Evaporation Rate: Not determined
Flammability (solid/gas): Flammable liquid
Upper/Lower Explosion Limits: Not established; related chemicals have 1–13% (v/v) in air
Vapor Pressure: <3 mm Hg at 25°C
Vapor Density: Greater than air
Relative Density: About 0.9 g/cm³
Solubility (water): Reacts slowly with water, moderate miscibility, forms silanols and methanol
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Near 230°C
Decomposition Temperature: Not available
Viscosity: Low, similar to light hydrocarbons
Chemical Stability: Stable under recommended handling and storage guidelines; reacts with moisture at surfaces or in bulk
Reactivity: Reacts with water and alcohols releasing methanol
Hazardous Reactions: Exposure to acids, bases, oxidizers increases risk of hazardous decomposition; hydrolyzes with water
Incompatible Materials: Strong oxidizing agents, acids, alkalis, moisture, peroxides
Hazardous Decomposition Products: Methanol, formaldehyde, dimethylamine, silicon oxides
Polymerization: No dangerous polymerization under normal storage and use
Routes of Exposure: Skin contact, inhalation, eye contact, ingestion
Acute Toxicity: Oral, LD50 (rat) 2,880 mg/kg (estimate based on similar silanes); Inhalation and dermal exposure may cause significant irritation, methanol release may cause CNS effects
Symptoms: Burning sensation, redness, cough, dizziness, headache, nausea, vision disturbances (methanol toxicity concern)
Skin Corrosion/Irritation: Causes irritation, possible burns with prolonged or repeated exposure
Serious Eye Damage/Irritation: Causes severe irritation, risk of permanent damage
Respiratory or Skin Sensitization: Not established, but amine component may contribute to allergic responses
Repeated Dose Toxicity: Long-term exposure may affect liver and kidneys
Carcinogenicity, Mutagenicity, Reproductive Toxicity: No conclusive evidence in available data
Additional Toxicological Data: Monitor for symptoms of methanol poisoning in accidental exposures
Toxicity to Aquatic Life: Harmful to aquatic organisms, risk to water environment from spilled product and methanol hydrolysis
Persistence and Degradability: Not rapidly biodegradable; hydrolyzes in moist environments to silanols and methanol, which is biodegradable
Bioaccumulation Potential: Limited, but hydrolysis product methanol does not bioaccumulate; silanols remain in the environment
Mobility in Soil: Moderately mobile due to water reactivity; product can migrate to groundwater and soil
Other Adverse Effects: Silicon compounds can alter soil chemistry in localized spills; potential risk to microbial populations in water treatment plants
Note: Follow local regulations for environmental protection and spill response
Disposal Methods: Incinerate in a chemical incinerator equipped with afterburner and scrubber, where permitted; or consign to licensed chemical waste disposal contractor
Waste from Residues/Unused Product: Handle as hazardous waste, do not dispose with general waste, label container appropriately
Contaminated Packaging: Rinse with appropriate solvent, collect washwater, and dispose in accordance with regulatory requirements
Local Disposal Regulations: Follow local, regional, and national regulations for chemical waste
UN Number: 1993
UN Proper Shipping Name: Flammable Liquid, N.O.S. (Contains 3-(N,N-Dimethylaminopropyl)Aminopropyl Methyl Dimethoxysilane)
Transport Hazard Class: 3
Packing Group: III
Marine Pollutant: Not classified as a marine pollutant
Special Precautions for User: Avoid exposure to heat, secure containers against movement, ensure full compliance with local, regional, and international shipping regulations
Environmental Hazards: See Section 12 for impact on aquatic environments
Classification: Complies with OSHA Hazard Communication Standard, GHS, EU Regulation (EC) No 1272/2008 (CLP), REACH, TSCA inventory listing
Labeling Requirements: Signal word, hazard and precautionary statements, GHS pictograms
International Inventories: Listed on TSCA (US), DSL (Canada), AICS (Australia), EINECS/ELINCS (EU), ENCS (Japan), and more
Restrictions: Handle only by trained individuals; product use may be restricted under local environmental regulations
Worker Safety Regulations: Use in compliance with local occupational health and environmental rules
Other Relevant Laws: Observe labelling, storage, and transport rules defined by local chemical safety authorities
