Product Name: Silicone
Chemical Family: Polysiloxanes
Recommended Uses: Sealant, lubricant, adhesive, mold-making, coating, electrical insulation
Manufacturer: Refer to container for specific manufacturer name
Contact Address: Physical address and contact number per shipping document
Emergency Phone Number: National emergency hotline, regional poison control center
CAS Number: Varies with specific formulation (common Dimethylpolysiloxane: 63148-62-9)
GHS Classification: Not classified as hazardous under GHS for general-purpose silicone used in sealants and lubricants
Hazard Pictograms: None for non-cured, standard silicone; consult packaging for specialized versions
Potential Health Effects: Eye and skin irritant in uncured form; ingestion may cause nausea
Specific Hazards: Thermal decomposition generates formaldehyde; fire generates silica and carbon oxides
Environmental Hazards: Silicone polymers do not degrade rapidly; may persist in soils and sediment
Chemical Name: Polydimethylsiloxane
Concentration: Above 85% typical
Additives: Silica filler (non-crystalline and amorphous), colorants, curing agents (platinum, tin, peroxide compounds depending on type), minor proprietary stabilizers
Impurities: Trace levels of linear siloxanes; consult supplier for full trace disclosure
CAS References: Dimethylpolysiloxane 63148-62-9, Amorphous Silica 112945-52-5 (if present), proprietary additives not typically disclosed
Inhalation: Move affected person to fresh air; seek medical attention for irritation or breathing difficulty
Eye Contact: Rinse thoroughly with water for at least 15 minutes; remove contact lenses; see physician for persistent redness
Skin Contact: Wash off with soap and water; remove contaminated clothing; monitor for lasting irritation
Ingestion: Rinse mouth, do not induce vomiting; call poison center or healthcare provider immediately
Notes for Physicians: Treat based on symptoms; respiratory symptoms may require oxygen or bronchodilators
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray
Unsuitable Media: Do not use direct water stream on spill—may spread burning product
Hazardous Combustion Byproducts: Silica fumes, carbon dioxide, carbon monoxide, trace formaldehyde
Firefighting Precautions: Firefighters wear self-contained breathing apparatus and full gear; cool adjacent containers
Special Hazards: Containers exposed to fire may rupture from pressure build-up
Personal Precautions: Avoid direct contact; wear gloves and goggles
Spill Cleanup: Contain with inert absorbent (sand, earth, vermiculite); collect mechanical means; clean area with detergent
Environmental Precautions: Prevent entry into sewers or waterways; place collected waste in sealable, labelled containers
Disposal: Dispose through licensed waste contractor in compliance with local regulations
Decontamination: Wash equipment, skin, and any exposed surfaces thoroughly after cleanup
Handling: Use in well-ventilated areas; avoid skin and eye contact by wearing appropriate PPE; keep containers closed when not in use
Safe Practices: Do not eat, drink, or smoke during use; handle away from strong acids, bases, and oxidizing agents
Storage Conditions: Store in original airtight containers, cool and dry place, protected from direct sunlight and moisture
Incompatibilities: Keep away from chlorine agents, concentrated nitric acid, peroxides—may react and generate heat
Special Requirements: Regularly inspect containers for leaks or deterioration especially in humid environments
Exposure Limits: No established occupational exposure limits for silicone polymers; amorphous silica OSHA PEL 20 mppcf (mg/m³ varies by jurisdiction)
Engineering Controls: Use local exhaust ventilation for large-scale uncured material use or mixing; ensure adequate general ventilation
Personal Protective Equipment: Nitrile gloves preferred for chemical resistance, long-sleeved garment, safety glasses with side shields or face shield, splash-resistant apron or coveralls
Respiratory Protection: Dust mask or NIOSH-approved respirator advisable during sanding, grinding, or prolonged uncured use
Hygiene Measures: Wash hands thoroughly after handling; do not reuse contaminated PPE
Appearance: Colorless to translucent viscous liquid, paste, grease, or rubbery solid
Odor: Odorless or faint characteristic odor
pH: Neutral (typically 6.5–7.5 aqueous for dispersions or emulsions)
Boiling Point/Range: Decomposes before boiling at >200°C
Melting Point/Range: Typically below -50°C to 45°C depending on grade
Flash Point: > 100°C (closed cup, varies by formulation)
Flammability: Non-flammable under normal conditions, but can burn at high temperatures
Vapor Pressure: Negligible at ambient
Vapor Density: Not applicable (as solid or viscous liquid)
Solubility: Insoluble in water; soluble in some organic solvents like toluene
Density: 0.95–1.10 g/cm³ depending on additives
Viscosity: Low to high, specified by product type
Partition Coefficient (n-octanol/water): Not established; generally not bioaccumulative
Auto-ignition Temperature: >400°C (varies)
Chemical Stability: Stable under standard storage and handling conditions
Reactivity: Low, but exposure to strong oxidizers may result in vigorous chemical reaction
Hazardous Decomposition: Prolonged heating or fire produces silica, formaldehyde, and trace organic vapors
Polymerization: Will not occur under normal processing
Incompatibilities: Reactive with concentrated acids, alkalis, strong oxidizing agents, and some metal powders
Acute Toxicity: No known significant health hazard under normal use; LD50 (oral, rat) >5000 mg/kg for common silicone oil
Skin Corrosion/Irritation: Mild, reversible irritation possible with repeated/prolonged exposure to uncured product
Eye Damage/Irritation: May cause slight irritation on direct contact
Respiratory Sensitization: Not expected, but fine dust from cured silicone cutting may cause transient mechanical irritation
Chronic Toxicity: No evidence of long-term systemic toxicity with regular exposure; additives may differ
Carcinogenicity: Silicon-based polymers not listed as carcinogens by IARC, NTP, OSHA
Mutagenicity and Reproductive Toxicity: Data suggests no mutagenic or teratogenic potential for primary constituents
Other Effects: Formaldehyde generated above 150°C may have toxicity and sensitization risk
Ecotoxicity: Silicone polymers are not acutely toxic to aquatic life at typical environmental concentrations
Persistence and Degradability: Highly resistant to biological degradation; persists in sediment and soils
Bioaccumulative Potential: Not expected to bioaccumulate due to high molecular weight and insolubility
Mobility in Soil: Low solubility limits movement through water table; adheres to particulate matter
Other Adverse Effects: Decomposition generates siloxanes and silica which are inert in environment; monitor additives used
Waste Treatment Methods: Best method is incineration in properly permitted facility
Disposal of Product: Follow local, regional, and national regulations for chemical waste
Packaging Disposal: Wash and reuse if possible, otherwise treat as contaminated waste
Do Not Release: Avoid disposal in sewage, surface water, or uncontaminated land
Special Notes: Consult waste vendor for safe practices regarding composite and filled silicone products
UN Number: Non-regulated for transport if not mixed with hazardous curing agents
Proper Shipping Name: Silicone compound or rubber (non-hazardous unless otherwise classified)
Transport Hazard Class: Non-hazardous
Packing Group: Not assigned
Special Transport Precautions: Secure containers to prevent movement; avoid extreme temperatures
Marine Pollution Status: Not classified as marine pollutant
TSCA (US): Listed for main silicone polymers
REACH (EU): Registered and compliant for bulk import and use
Canadian DSL: Listed
OSHA Compliance: Not a regulated substance under hazard communication standard for general-purpose forms
Other Regulations: Can contain trace levels of formaldehyde precursors—label requirements for California Proposition 65
Labeling: Not subject to GHS pictographs for most unfilled silicone; special blends and curing agents may require additional labeling
Right to Know (RTK): Present in most state inventory lists as a non-hazardous additive
Import/Export Controls: No special controls for cured polymers; consult customs codes for additives or unreacted siloxanes
