Product Name: N,N-Diethylaminopropyltrimethoxysilane
Chemical Formula: C10H25NO3Si
Synonyms: 3-(Diethylamino)propyltrimethoxysilane
CAS Number: 41051-80-3
Recommended Use: Silane coupling agent, adhesion promoter, surface modifier
Supplier Details: Chemical manufacturer or distributor, with emergency contact number provided on label
Classification: Flammable liquid (Category 3), Skin irritant (Category 2), Eye irritant (Category 2A), Acute toxicity, oral (Category 4)
Hazard Statements: Flammable liquid and vapor. Causes skin irritation. Causes serious eye irritation. May be harmful if swallowed.
Pictograms: Flame, Exclamation Mark
Signal Word: Warning
Precautionary Statements: Keep away from heat and open flames. Avoid breathing vapors. Wear gloves and eye protection. Wash hands thoroughly after handling. If in eyes, rinse cautiously with water.
Chemical Name: N,N-Diethylaminopropyltrimethoxysilane
Concentration: 95-100%
Impurities: Methanol as trace hydrolysis byproduct, known for minor impact during handling, below safety thresholds
Other Ingredients: None present above reporting limits
Inhalation: Move person to fresh air if signs of breathing difficulty appear. Seek medical attention for persistent cough or shortness of breath.
Skin Contact: Remove contaminated clothing. Wash affected areas thoroughly with soap and water. Treat persistent skin irritation with medical attention.
Eye Contact: Flush eyes gently with lukewarm water for at least 15 minutes, keeping eyelids lifted. Immediately call for medical help if irritation persists.
Ingestion: Rinse mouth. Do not induce vomiting unless directed by medical personnel. Provide water only if person is fully conscious. Seek immediate medical attention.
Suitable Extinguishing Agents: Use alcohol-resistant foam, carbon dioxide, or dry chemical powder. Steer clear of using direct water streams on burning liquid.
Special Hazards: Combustion releases toxic fumes, including oxides of carbon, nitrogen, and silicon compounds.
Protective Equipment: Firefighters require self-contained breathing apparatus and chemical-resistant gear. Remove non-involved individuals from danger zone.
Explosion Risk: Vapors may form explosive mixtures with air above flash point of 60°C (140°F). Cool containers near fire with water spray to prevent pressure build-up and rupture.
Personal Precautions: Ventilate area. Eliminate sources of ignition. Don chemical splash goggles, gloves, and lab coat or apron.
Environmental Precautions: Prevent spillage from entering drains, soil, or surface waters.
Cleanup Methods: Absorb liquid using inert material such as sand or diatomite. Collect and dispose of in chemical waste container. Wash surfaces thoroughly with detergent and water following cleanup.
Handling: Use only in well-ventilated settings. Avoid exposure to heat, flames, and sparks. Keep containers tightly sealed during transfer and storage. Avoid contact with skin and eyes.
Storage: Store in original container in a cool, dry location away from incompatible substances like oxidizers or water. Isolate from sources of ignition. Label containers clearly with hazard information. Maintain storage area ventilation.
Engineering Controls: Employ local exhaust or general ventilation to keep vapor concentrations below threshold limits.
Personal Protective Equipment: Wear butyl rubber or nitrile gloves, splash-proof chemical goggles, and flame-resistant lab coat. In case of high vapor concentrations, use NIOSH-approved organic vapor respirator.
Hygiene Measures: Wash hands before breaks and after work. Do not eat, drink, or smoke when handling chemicals. Remove contaminated clothing promptly and wash before reuse.
Appearance: Colorless to pale yellow transparent liquid
Odor: Amine-like odor
Melting Point/Range: Not available
Boiling Point: 255°C (491°F)
Flash Point: 78°C (172°F) closed cup
Vapor Pressure: 0.2 mmHg at 25°C
Solubility: Hydrolyzes in water, soluble in organic solvents
Density: About 0.94 g/cm³ at 25°C
pH: Not determined
Viscosity: 2-4 mPa·s at 25°C
Partition coefficient: n-Octanol/water: No data available
Decomposition Temperature: Unknown
Chemical Stability: Stable under standard conditions with sealed packaging. Susceptible to hydrolysis in moisture.
Reactive With: Strong oxidizers, acids, water, and alcohols produce methanol.
Hazardous Decomposition Products: Produces nitrogen oxides, carbon oxides, and silicon oxides on burning.
Polymerization: Does not polymerize under normal conditions.
Acute Toxicity: May cause moderate irritation to respiratory tract, skin, and eyes.
Skin Sensitization: Prolonged skin contact increases chances of dermatitis or chemical burns.
Inhalation: High vapor concentrations can produce dizziness, headache, and drowsiness.
Ingestion: Swallowing causes nausea, abdominal discomfort, or more serious effects if large quantities are taken.
Chronic Effects: No prolonged systemic toxicity in reported cases, but repeated exposure enhances skin risk.
Carcinogenicity: None classified for this chemical by major regulatory agencies.
Ecotoxicity: Low predicted toxicity to aquatic organisms, but breakdown products—especially methanol—impact water life.
Mobility: Hydrolysis products readily dilute into moisture environments and migrate through soil.
Persistence and Degradability: Silane structure hydrolyzes quickly; environmental breakdown occurs within days.
Bioaccumulation: Compound shows little tendency to accumulate in organisms.
Other Adverse Effects: Prevent bulk quantities from entering water systems.
Waste Handling: Collect contaminated absorbents, soil, or debris and containerize for hazardous waste disposal.
Disposal Methods: Incinerate or dispose of using facilities that follow local environmental regulations. Do not drain into sewer.
EU Waste Code: 07 02 99 or suitable based on chemical inventory.
UN Number: 1993
Proper Shipping Name: Flammable liquid, n.o.s. (N,N-Diethylaminopropyltrimethoxysilane)
Transport Hazard Class: 3 (flammable liquid)
Packing Group: III
Environmental Hazards: Not classified as marine pollutant
Special Precautions for User: Avoid loading with strong acids, bases, or oxidizers; label bottles; keep upright during transport.
Workplace Regulation: OSHA, ACGIH, and European Directives set exposure limits for volatile amines and solvents.
EPA Status: Subject to reporting for certain releases under TSCA.
EU Classification: Flammable liquid, skin and eye irritant under CLP.
Labeling: Follows GHS conventions: flame and exclamation hazard pictograms, warning signal word on all containers.
Inventory Lists: Listed on TSCA, EINECS/ELINCS, and international chemical control regulations.
