Product Name: PEG-10 Dimethicone
Chemical Family: Polyether modified siloxane
Molecular Formula: Variable, typically CnHmOxSiy
Trade Names: PEG-10 Dimethicone, Polyethylene Glycol Dimethicone
Uses: Personal care, skin conditioning, hair care formulations, emollient and conditioning agent
Manufacturer: Multiple chemical suppliers across North America, Europe, and Asia produce this compound.
Contact Information: Refer to supplier documentation for specific addresses and emergency numbers.
CAS Number: 68937-54-2 (may vary based on specific compound variant)
Synonyms: Poly(oxy-1,2-ethanediyl), alpha-(trimethylsilyl)-omega-hydroxy-, ethers with dimethylsiloxane, Dimethicone PEG-10, Silicone surfactant
Relevant Identified Uses: Stabilizer in emulsions, skin protectant, lubricant, anti-foaming agent.
GHS Classification: Typically not hazardous by GHS classification.
Signal Word: Not required for this product.
Hazard Statements: Direct skin and eye contact may cause mild irritation after prolonged exposure.
Precautionary Statements: Avoid inhalation of mists. Prevent contact with eyes. Wash thoroughly after handling.
Potential Health Effects: Eyes: Possible slight irritation. Skin: Infrequent irritation, especially with sensitive individuals. Inhalation: Low volatility; mist inhalation may irritate respiratory tract. Ingestion: Low toxicity but not recommended.
Environment Hazards: May persist in aquatic environments if released in large quantities, but shows low toxicity to aquatic life.
NFPA Ratings: Health: 1, Flammability: 1, Reactivity: 0
Chemical Name: PEG-10 Dimethicone
CAS Number: 68937-54-2
Ingredient Range: 98-100%
Impurities: Minimal residual silanol and polyether starting material.
Additives: Some variants can contain low levels of stabilizing agents depending on producer. Typical product is essentially pure.
Eye Contact: Rinse eyes thoroughly with plenty of clean water for at least 15 minutes, lifting eyelids occasionally. Seek medical evaluation for ongoing discomfort.
Skin Contact: Wash skin with mild soap and water. Remove contaminated clothing and wash before reuse. If irritation persists, consult a healthcare provider.
Inhalation: Move to fresh air. If breathing difficulty or discomfort continues, obtain medical attention.
Ingestion: Rinse mouth with water. Do not induce vomiting unless directed by a healthcare professional. If large quantities are swallowed, obtain prompt medical assistance.
Most Important Symptoms/Effects: May include transient eye or skin irritation, rarely respiratory discomfort.
Note to Physician: Provide symptomatic treatment; product has low acute toxicity.
Suitable Extinguishing Media: Use dry chemical powder, foam, carbon dioxide, or water spray.
Unsuitable Media: Direct, powerful water jets may spread spilled product.
Fire Hazards: Product is not readily flammable but can burn in fire conditions, generating carbon oxides and silicon oxides.
Protection for Firefighters: Wear full protective gear with self-contained breathing apparatus. Isolate area and stay upwind.
Firefighting Instructions: Cool exposed containers with water spray to prevent pressure build-up.
Personal Precautions: Avoid contact with eyes and skin. Use appropriate personal protective equipment including gloves and goggles.
Environmental Precautions: Prevent discharge to natural waters or sewers in large spills. Contain with sand or non-combustible absorbent.
Spill Cleanup Methods: Dike and absorb with inert material such as sand, earth, or commercial absorbent. Collect residues into suitable containers for proper disposal. Wash area with water but avoid generating large volumes of contaminated rinse.
Handling: Use only with good ventilation. Keep containers tightly closed to avoid moisture uptake and contamination. Avoid breathing mist or vapors. Wash hands after handling.
Storage: Store in cool, dry, well-ventilated space away from sources of heat and direct sunlight. Keep in original container with proper sealing. Avoid freezing and excessively high temperatures. Store away from oxidizers or strong acids.
Occupational Exposure Limits: No established regulatory limits for PEG-10 Dimethicone.
Engineering Controls: Use local exhaust ventilation for handling large quantities or operations likely to generate mist.
Personal Protective Equipment: Eyes: Safety goggles or face shield. Skin: Chemical-resistant gloves (nitrile, neoprene). Clothing: Standard workwear. Respiratory: Not usually required, but a NIOSH-approved respirator should be considered during heavy use or spillage.
Hygiene Measures: Avoid eating, drinking, or smoking during product use. Wash thoroughly after handling.
Appearance: Clear to hazy viscous liquid
Color: Colorless or pale yellow
Odor: Slight, characteristic silicone odor
pH: Not applicable or neutral
Boiling Point: Not determined due to polymeric nature; decomposition occurs before boiling
Melting/Freezing Point: Not defined; remains liquid at standard environmental temperatures
Flash Point: >93°C (closed cup, typical value)
Evaporation Rate: Negligible under normal use
Flammability: Not readily flammable
Vapor Pressure: Very low <1 mmHg at 25°C
Density: 1.01 to 1.12 g/cm³ at 25°C (can vary by sample formulation)
Solubility in Water: Dispersible or slightly soluble, depending on the specific PEG composition
Partition Coefficient (n-octanol/water): Not determined
Viscosity: 150–4000 cSt at 25°C (varies by grade)
Decomposition Temperature: Above 200°C
Stability: Chemically stable under recommended conditions of storage and use.
Reactivity: Not reactive under normal procedures.
Conditions to Avoid: Avoid extreme heat or cold, open flames, strong oxidizing materials.
Materials to Avoid: Strong acids, oxidizing agents, aldehydes.
Hazardous Decomposition Products: Thermal decomposition can yield carbon monoxide, carbon dioxide, silicon dioxide, and traces of formaldehyde.
Polymerization: Not subject to hazardous polymerization.
Acute Toxicity: Generally low; estimated oral LD50 (rat) > 5,000 mg/kg.
Skin Corrosion/Irritation: Mild and infrequent; not classified as a skin irritant.
Serious Eye Damage/Irritation: Slight and reversible ocular disturbance in sensitive individuals.
Respiratory Sensitization: Product characteristics not known to sensitize via inhalation.
Skin Sensitization: Not recognized as a skin sensitizer.
Chronic Effects: No evidence of carcinogenicity, mutagenicity, or reproductive toxicity with normal use.
Other Relevant Information: PEG-modified silicones are generally considered safe for human topical exposure with proper use; avoid deliberate ingestion or large-scale inhalation exposure.
Ecotoxicity: Low toxicity to aquatic organisms; LC50/EC50 values generally not acutely hazardous.
Persistence and Degradability: Product decomposes slowly; siloxane backbone and PEG groups may not be readily biodegradable.
Bioaccumulative Potential: No significant bioaccumulation expected due to molecular structure.
Mobility in Soil: Limited mobility; persists mainly in upper soil layers.
Other Adverse Effects: In industrial spills, bulk quantities can affect physical properties of water surfaces but do not typically threaten long-term ecosystem health at standard use levels.
Waste Disposal Methods: Handle as non-hazardous organic waste unless contaminated. Incinerate or landfill in accordance with local, regional, and national regulations.
Container Disposal: Rinse thoroughly and offer container for recycling or disposal according to government regulations.
Special Precautions: Avoid disposal to natural waterways. Do not incinerate closed or pressurized containers.
UN Number: Not classified as dangerous for transport.
Proper Shipping Name: Not regulated.
Transport Hazard Class: None
Packing Group: None
Marine Pollutant: Not listed as marine pollutant.
Special Precautions for Transport: Protect containers from physical damage and keep securely closed during transit.
Global Inventories: Listed or exempted from listing on international regulatory lists including TSCA (United States), EINECS/ELINCS (Europe), DSL (Canada), AICS (Australia), ENCS (Japan), IECSC (China), and others.
OSHA Status: Not hazardous.
SARA Title III: Not a regulated substance.
California Prop 65: Product is not known to contain chemicals subject to Proposition 65.
REACH Compliance: Registered under REACH for use in cosmetic and personal care applications.
Other Standards: Conforms to key safety standards for use in cosmetic applications under EU Cosmetics Regulation and US FDA guidelines (for indirect or topical use).
