Product Name: Phenyltriethoxysilane
Chemical Formula: C12H20O3Si
Synonyms: Triethoxyphenylsilane, Phenylsilane triethoxy derivative
CAS Number: 780-69-8
Recommended Use: Surface treatments, chemical synthesis, laboratory research
Supplier Details: Manufacturer identification, address, phone number, and emergency contact information
Classification: Flammable liquid (Category 3), Skin and eye irritant
Hazard Statements: Flammable liquid and vapor. Causes skin and eye irritation. May cause respiratory irritation.
Precautionary Statements: Keep away from sparks and open flame. Avoid breathing vapors. Use protective gear.
Label Elements: Pictograms: Flame, Exclamation Mark
Signal Word: Warning
Target Organs: Respiratory tract, skin, eyes
Chemical Name: Phenyltriethoxysilane
Concentration: >99%
CAS Number: 780-69-8
Impurities: Trace residual solvents or byproducts considered negligible for most industrial use
Molecular Weight: 240.37 g/mol
Inhalation: Move the exposed person to fresh air immediately. Seek medical attention if symptoms persist, such as cough or shortness of breath.
Skin Contact: Remove contaminated clothing and wash skin thoroughly with soap and water. If irritation develops, consult a physician.
Eye Contact: Rinse eyes cautiously with water for at least 15 minutes. Remove contact lenses if present and easy to do. Seek medical help for persistent irritation.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek immediate medical attention. Watch for dizziness or nausea.
Suitable Extinguishing Media: Use alcohol-resistant foam, dry chemical powder, carbon dioxide. Water spray may assist to cool containers.
Specific Hazards: Vapors may form explosive mixtures with air. Combustion produces irritating or toxic fumes.
Protective Equipment: Firefighters wear self-contained breathing apparatus and flame-resistant clothing.
Advice: Approach from upwind. Evacuate non-emergency personnel. Prevent runoff from entering drains or waterways.
Personal Precautions: Wear chemical-resistant gloves, goggles, and appropriate respirators. Remove sources of ignition.
Environmental Precautions: Prevent spillage from entering drains, soil, or natural water sources.
Containment and Cleanup: Absorb with non-combustible material like sand or clay. Use explosion-proof equipment. Place waste in suitable, labeled containers for disposal. Wash spill site thoroughly after material pickup is complete.
Handling: Use in well-ventilated areas, avoid breathing vapor or mist. Wear protective equipment to avoid skin and eye contact. Ground and bond containers when transferring product.
Storage: Store in tightly-sealed containers in a cool, dry, well-ventilated area away from direct sunlight, incompatible materials, and ignition sources. Keep container upright and closed when not in use.
Special Considerations: Avoid contact with moisture; reacts to produce ethanol and silanols.
Exposure Limits: No specific occupational exposure limits established for this compound; observe general solvent limits.
Engineering Controls: Work in fume hood or with adequate local exhaust. Use spark-proof tools.
Personal Protective Equipment: Wear safety glasses with side shields, chemical-resistant gloves, lab coat, and suitable respiratory protection if controls are inadequate.
Hygiene Measures: Wash hands thoroughly after handling and before eating or drinking. Remove contaminated clothing and wash before reuse.
Appearance: Clear colorless-to-pale yellow liquid
Odor: Characteristic sweet-silane odor
Melting Point: Not applicable
Boiling Point: 260–265°C
Flash Point: 110°C (closed cup)
Solubility: Insoluble in water; soluble in common organic solvents
Density: 0.98–1.01 g/cm³ at 25°C
Vapor Pressure: Low at ambient temperature
Viscosity: Low viscosity liquid
pH: Not applicable
Partition Coefficient (n-octanol/water): No data available
Chemical Stability: Stable under recommended storage and handling conditions.
Possibility of Hazardous Reactions: Reacts with water, acids, or bases to produce ethanol and corresponding silanols.
Incompatible Materials: Strong oxidizing agents, moisture, acids, and alkalis.
Hazardous Decomposition Products: Carbon oxides, silicon dioxide, and ethanol upon combustion.
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Effects: Causes irritation to eyes, skin, respiratory system. High concentrations may cause headache, dizziness, or nausea.
Chronic Effects: Prolonged or repeated exposure may dry skin or cause dermatitis. No known carcinogenic, mutagenic, or reproductive toxicity based on current data.
LD50/LC50: Oral LD50 (rat): No data, estimated >2000 mg/kg based on chemical class
Ecotoxicity: Not classified as hazardous to aquatic life in standard tests, but hydrolyzes in water to ethanol, potentially harmful in large spills.
Persistence and Degradability: Expected to hydrolyze in water and degrade into inorganic compounds.
Bioaccumulative Potential: Not expected to bioaccumulate significantly.
Mobility in Soil: Low due to reactivity with moisture.
Other Adverse Effects: Avoid contamination of natural waters; observe local environmental regulations.
Waste Treatment Methods: Dispose of material in accordance with local, regional, and national regulations using licensed chemical waste disposal contractors.
Packaging Disposal: Empty containers may retain hazardous residue; triple rinse and offer recycling or dispose as hazardous waste.
Special Precautions: Do not discharge to sewers or environment. Consult local guidelines for handling organic chemicals.
UN Number: 1993
Proper Shipping Name: Flammable Liquid, n.o.s. (Phenyltriethoxysilane)
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Labels: Flammable liquid label required
Marine Pollutant: No
Special Transport Precautions: Use proper containment, avoid transport with incompatible substances, secure containers to prevent leaks.
TSCA Status: Listed on the US Toxic Substances Control Act Inventory
REACH Status: Registered or Pre-registered in the European Union
WHMIS (Canada): Classified as hazardous, flammable liquid, skin/eye irritant
SARA Title III: Not subject to special reporting; general awareness required
OSHA Hazards: Flammable, irritant
Other Regulations: Observe all applicable international, national, and local regulations regarding transport, use, and disposal of chemicals.
Labeling Requirements: Include product identifier, appropriate hazard warnings, supplier identification, and precautionary statements.
