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Material Safety Data Sheet (MSDS) for Polyethylene Oxide

Identification

Product Name: Polyethylene Oxide
Chemical Family: Polyalkylene oxides
CAS Number: 25322-68-3
Synonyms: Poly(ethylene oxide), Polyoxyethylene, PEO
Recommended Uses: Thickener, rheology modifier, lubricant in various industries, dispersant, sizing agent
Manufacturer Information: Information available upon request from supplier
Emergency Contact Number: Refer to local poison control or healthcare provider

Hazard Identification

GHS Classification: Not classified as hazardous under GHS criteria
Physical Hazards: Dust may be a combustible hazard in certain environments
Health Hazards: Low toxicity to humans, dust may cause mild irritation to eyes, nose, throat, and skin
Environmental Hazards: Low risk for aquatic and terrestrial environments at normal levels, but can affect water movement when spilled in bulk
Hazard Statements: Fine powder or dust may form explosive mixtures with air
Pictogram: No symbol necessary, but use caution for dust explosion risk

Composition / Information on Ingredients

Chemical Name: Polyethylene Oxide
Chemical Formula: (C2H4O)n
Molecular Weight: Varies depending on grade, commonly 100,000 to several million g/mol
Purity: Greater than 98%
Impurities/Additives: Trace levels of unreacted ethylene oxide or lower molecular weight polyols in rare cases
Stabilizers/Preservatives: None typically added

First Aid Measures

Eye Contact: Rinse cautiously with water for several minutes, remove contacts if needed, continue rinsing and seek medical attention for persistent irritation
Skin Contact: Wash skin with soap and water, remove contaminated clothing, seek medical attention for lasting irritation
Inhalation: Move victim to fresh air, maintain breathing, seek medical advice if symptoms persist
Ingestion: Rinse mouth, seek medical attention if feeling unwell, do not induce vomiting
Important Symptoms: Irritation of eyes, skin, respiratory tract upon excessive exposure to dust

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Media: High volume water jets may spread dust
Special Hazards: Dust may form explosive mixtures with air and can ignite during fire conditions
Protective Equipment: Firefighters should wear full protective gear, including self-contained breathing apparatus
Thermal Decomposition: May release carbon monoxide, carbon dioxide, and other organic compounds when combusted
Firefighting Instructions: Use extinguishing methods suitable for surrounding materials, cool containers with water spray

Accidental Release Measures

Personal Precautions: Wear protective gloves, goggles, dust mask, avoid formation and inhalation of dust
Environmental Precautions: Prevent bulk material from entering waterways, sewers, or drains
Cleanup Methods: Sweep up spills without generating dust, place in a suitable closed container for disposal
Other Precautions: Provide adequate ventilation, mark area as restricted until cleanup is complete

Handling and Storage

Safe Handling: Minimize dust creation, use local exhaust or general ventilation to control airborne dust, keep containers tightly closed
Storage Requirements: Store in cool, dry, well-ventilated area away from heat, flame, and incompatible materials
Incompatibilities: Strong oxidizers, strong acids
Storage Container Material: Polyethylene, stainless steel, or other compatible material
Hygiene Measures: Wash hands thoroughly after handling, do not eat, drink, or smoke during use

Exposure Controls and Personal Protection

Exposure Limits: No occupational exposure limits established; treat as nuisance dust (use OSHA PEL for particulates not otherwise regulated: 15 mg/m³ total dust, 5 mg/m³ respirable fraction)
Engineering Controls: Use process enclosures, local exhaust ventilation, or other controls to keep dust below recommended levels
Personal Protection: Wear safety glasses with side-shields, protective gloves (nitrile or similar), approved dust mask or respirator in dusty environments
Other PPE: Long sleeve clothing to protect skin
Hygiene Practices: Wash thoroughly after handling, remove contaminated clothing

Physical and Chemical Properties

Appearance: White to off-white powder or granular solid
Odor: Odorless
Odor Threshold: Not applicable
pH: 9-11 (1% water solution)
Melting Point: 65-70°C (decomposes)
Boiling Point: Not available
Flash Point: Not applicable (solid powder)
Flammability: Not easily flammable but may support combustion as a powder
Explosion Limits: Dust may form explosive mixtures with air
Vapor Pressure: Not applicable
Density: 1.2 - 1.3 g/cm³
Solubility: Freely soluble in water
Partition Coefficient (Log Kow): Not determined
Auto-ignition Temperature: >380°C
Decomposition Temperature: >180°C
Viscosity: Depends on molecular weight and concentration in solution

Stability and Reactivity

Reactivity: Stable under recommended storage and handling
Chemical Stability: Stable at ambient temperatures
Hazardous Reactions: Strong oxidizers can degrade material rapidly
Conditions to Avoid: Heat, flames, ignition sources, excessive dust generation
Incompatible Materials: Strong oxidizing agents, acids
Hazardous Decomposition Products: Thermal decomposition can produce carbon monoxide, carbon dioxide, and other volatile compounds

Toxicological Information

Acute Toxicity: Low oral and dermal toxicity (LD50 oral rat > 10,000 mg/kg)
Skin Corrosion/Irritation: Slight to no irritation possible from routine exposure
Eye Damage/Irritation: Dust may cause mild, reversible irritation
Respiratory Sensitization: Inhalation of dust can lead to respiratory irritation, sneezing, or coughing
Carcinogenicity: Not listed by IARC, NTP, or OSHA as carcinogen
Germ Cell Mutagenicity: No data suggesting mutagenic potential
Reproductive Toxicity: No adverse reproductive studies available
Chronic Exposure: Chronic inhalation of high dust loads could lead to respiratory symptoms
Other Effects: People with pre-existing respiratory conditions may experience increased sensitivity

Ecological Information

Ecotoxicity: Polyethylene oxide is not acutely toxic to aquatic organisms at low concentrations
Persistence and Degradability: Material is persistent in the environment, degrades slowly by abiotic and microbial action
Bioaccumulation Potential: Low, due to large molecular size
Mobility in Soil: Highly soluble in water, may move through soil, large spills can alter water movement and oxygenation
Other Adverse Effects: High concentrations in waterways can increase viscosity and impact aquatic life by reducing oxygen transport

Disposal Considerations

Waste Disposal Methods: Dispose of this product in accordance with federal, state, and local regulations
Recommended Disposal: Landfill or incineration at approved facility, avoid releasing large amounts into waterways
Container Disposal: Empty containers should be recycled or disposed of as regular solid waste if not contaminated
Special Precautions: Clean up dust thoroughly, avoid inhalation, large quantities should be handled by licensed waste disposal contractors

Transport Information

UN Number: Not regulated under International Transport Codes
Proper Shipping Name: Not classified as a hazardous material for transport
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Environmental Hazards: Avoid large spills during transport, prevent from entering drains
Special Precautions for User: Store and transport in closed containers, avoid creating dust clouds

Regulatory Information

TSCA Status: Listed in the U.S. Toxic Substances Control Act inventory
EU EINECS/ELINCS: Included in EINECS
US EPA SARA Title III: Not subject to reporting requirements
OSHA: Not classified as hazardous under OSHA HazCom Standard
REACH: Complies with Regulation (EC) No 1907/2006
Other Regulations: Workers handling substantial amounts should have proper safety training, regulations may vary locally