Product Name: Acyloxysilane Oligomer
Chemical Family: Organosilicon Compound
Synonyms: Silane, acyloxy functional oligomer
Manufacturer/Supplier: Contact dedicated chemical supplier for up-to-date company details
Recommended Uses: Crosslinking agent in sealants, adhesives, coatings
Emergency Telephone: Refer to supplier emergency line or CHEMTREC
CAS Number: Proprietary blend—consult Safety Officer for details
UN Number: Information managed by technical and shipping teams
GHS Classification: Flammable liquid (Category 3), Skin irritant (Category 2), Eye irritant (Category 2A), Specific Target Organ Toxicity - Single Exposure (Category 3)
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause respiratory irritation, may cause drowsiness or dizziness, liquid and vapor are flammable
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from heat/sparks/open flame/hot surfaces. Wear protective gloves/protective clothing/eye protection/face protection. Avoid breathing vapors. Use only outdoors or in well-ventilated area. Wash hands thoroughly after handling. In case of fire: use dry chemical, foam, CO₂ to extinguish.
Potential Health Effects: Inhalation causes respiratory tract irritation, dizziness, or drowsiness. Skin contact leads to drying, redness, possible rash. Eye contact causes pain, redness, watering. Ingestion unlikely in normal use, but may harm stomach lining.
Component: Acyloxysilane Oligomer
Concentration: 70-90%
Component: Solvent carrier (examples: Ethyl acetate, Methyl ethyl ketone)
Concentration: 5-25%
Component: Stabilizers and processing aids
Concentration: 1-5%
Impurities/Byproducts: May include trace amounts of acetic acid or related organic acids after hydrolysis. These can cause irritation if inhaled or absorbed through skin.
Inhalation: Move affected person to fresh air. Keep comfortable and monitor breathing. Seek medical attention if symptoms do not resolve.
Skin Contact: Take off contaminated clothing. Rinse skin with soap and water for several minutes. Get medical help if irritation persists.
Eye Contact: Rinse cautiously with water for several minutes, lifting eyelids occasionally. Remove contact lenses if easy to do. Get prompt medical attention if irritation develops.
Ingestion: Rinse mouth with water. Never induce vomiting. Give water to drink if conscious. Seek immediate medical advice.
Self-Protection for First Aiders: Use gloves and eye protection when helping, avoid breathing vapors, make sure you have access to fresh air.
Suitable Extinguishing Media: Use alcohol-resistant foam, dry powder, or carbon dioxide. Water spray can cool containers but may not extinguish flames directly.
Unsuitable Extinguishing Media: Avoid water jet—may spread burning liquid.
Specific Hazards: Flammable vapors can form explosive mixtures with air. During combustion, releases irritating and toxic fumes, including carbon oxides and silicon oxides.
Protective Equipment: Wear self-contained breathing apparatus (SCBA) and full protective gear.
Firefighting Guidance: Cool fire-exposed containers, avoid breathing vapors, evacuate area if necessary. Approach from upwind direction.
Special Procedures: Prevent runoff into drains, sewers, or waterways. Using dikes or inert absorbents can help manage spilled material.
Personal Precautions: Evacuate unnecessary personnel. Ventilate area. Avoid contact with skin, eyes, and clothing. Use gloves and goggles.
Environmental Precautions: Prevent product from entering watercourses, drains, or soil. Notify authorities if major spill enters environment.
Spill Cleanup Methods: Cover spills with inert absorbent (sand, earth, vermiculite). Scoop up carefully into waste containers. Wash spill area thoroughly with water and detergent. Dispose of collected material according to federal, state, local regulations.
Respiratory Protection: Use approved respirators in poorly ventilated areas.
Safe Handling: Wear protective gloves, clothing, and eye protection. Avoid inhalation of vapor/mist. Do not eat, drink, or smoke near chemical. Wash hands after handling.
Storage Requirements: Store in tightly closed original containers, in cool, dry, well-ventilated place. Keep away from heat, sparks, flames, and incompatible materials (like strong acids, bases, oxidizing agents).
Incompatibilities: Acids, bases, oxidizers.
Other Recommendations: Prevent static charge buildup. Protect from moisture, as hydrolysis may generate acetic acid vapor.
Engineering Controls: Ensure good room ventilation, especially in confined areas. Local exhaust may be required during large-scale use.
Exposure Limits: Consult supplier and local regulations for OELs (example solvents may have TLVs or PELs).
Personal Protective Equipment:
Appearance: Clear to slightly hazy liquid, colorless to pale yellow
Odor: Sweet ester-like, may have noticeable acetic acid aroma (with moisture exposure)
Odor Threshold: Low, may detect at low concentrations
pH: Not applicable (hydrolyzes in water, forming acidic byproducts)
Melting/Freezing Point: Not determined
Boiling Point/Range: 130°C to 250°C (dependent on solvent blend)
Flash Point: 23°C to 60°C (varies with solvent)
Evaporation Rate: Moderate (faster with more volatile solvents)
Flammability: Flammable liquid and vapor
Vapor Pressure: Depends on solvent carrier, typically 2–60 mm Hg @ 20°C
Vapor Density: Heavier than air (may form vapors near ground)
Relative Density: 1.0–1.2 g/cm³
Solubility: Insoluble in water, reacts slowly with water to form silanols and organic acid
Partition Coefficient (n-octanol/water): Not determined
Decomposition Temperature: Above 250°C
Viscosity: Low to moderate, subject to formulation
Chemical Stability: Stable under recommended conditions. Unstable with moisture, formation of acetic acid or similar compounds.
Reactivity: Reacts with water, alcohols, acids, and strong bases.
Hazardous Reactions: May release heat and irritating vapors (acetic acid derivatives) upon hydrolysis.
Conditions to Avoid: Heat, open flame, ignition sources, moisture/humidity.
Incompatible Materials: Water, strong oxidizing agents, strong acids and bases.
Hazardous Decomposition Products: Silicon oxides, carbon oxides, acetic acid.
Acute Toxicity: Oral, dermal, and inhalation toxicity data depend on specific blend; expected to be low to moderate hazard. Solvent exposure may increase risk.
Skin Corrosion/Irritation: Causes skin irritation; repeated or prolonged exposure may lead to dermatitis.
Serious Eye Damage: Causes severe irritation, redness, watering, pain.
Respiratory Sensitizer: May cause airway irritation with repeated exposure.
Carcinogenicity: No known components listed as carcinogens (IARC, NTP, OSHA).
Possible Routes of Exposure: Inhalation, skin, eyes, ingestion (rare).
Symptoms: Burning, redness, watering eyes, headache, weakness, dizziness, confusion with excessive vapor inhalation.
Chronic Effects: Data insufficient for long-term effects, but solvents may cause liver, kidney, nervous system impacts if misused.
Other Health Effects: Acetic acid vapors irritate eyes, nose, and respiratory tract.
Aquatic Toxicity: Expected to be harmful to aquatic organisms. Ingredient solvents and acyloxysilanes can cause long-term adverse impacts.
Persistence/Degradability: Product slowly hydrolyzes in soil and water, producing acetic acid and silanols. Silanols tend to polymerize and become part of soil matrix.
Bioaccumulation: Low expected potential.
Mobility in Soil: May partially leach if released, carrier solvents are volatile and may reach watercourses if spilled.
Other Adverse Effects: Large releases can lower water quality and threaten aquatic life.
Waste Treatment Methods: Incinerate under controlled conditions in accordance with official regulations. Dilute and neutralize small unused quantities, then discard through licensed hazardous waste contractors.
Unused Product Disposal: Treat as hazardous waste; never pour down drains, sewers, or into the environment.
Empty Containers: Do not reuse; triple rinse and dispose per local guidelines.
Legal Requirements: Local, state, and federal regulations must guide disposal process; environmental authority rules take priority.
UN Number: Noted on shipping label—varies by blend and solvent used
Proper Shipping Name: Flammable Liquid, N.O.S. (including Acyloxysilane Oligomer and solvent details)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: II or III (depends on blend)
Labels and Markings: Flammable Liquid, environmental hazard, as appropriate
Marine Pollutant: Yes (solvent and silanes may both affect aquatic life)
Special Precautions for User: Use approved containment and spill kits during transport. Verify vehicle ventilation.
Regulatory Notes: Confirm with local and international regulations (ADR, IMDG, IATA)
Regulatory Status: Classified as hazardous under OSHA Hazard Communication Standard, EU CLP, other relevant regulations.
TSCA Inventory: Ingredients typically included or notified.
SARA Title III: Components may have reporting thresholds—review Section 313 for solvent and hazardous air pollutant status.
WHMIS (Canada): Class B2, D2B – Flammable liquid, irritant
REACH (EU): Ingredients require dossiers for import, subject to substance registration if in significant quantity.
Other Applicable Laws: Refer to local chemical control acts, waste disposal laws, and shipping rules.
