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Product Name: Poly(3,4-ethylenedioxythiophene)-Poly(styrenesulfonate) (PEDOT:PSS)
Chemical Family: Conductive Polymer Dispersion
Synonyms: PEDOT:PSS, PEDOT/PSS, Poly(3,4-ethylenedioxythiophene):polystyrenesulfonate
Recommended Use: Transparent conductive coating, antistatic coatings, research and development
Supplier's Information: Contact local distributor or manufacturer for emergency phone number, address, and email
Product Codes: Obtained directly from product packaging or technical datasheet
Classification: Not classified as hazardous under GHS or OSHA regulations for many laboratory grades, though variants may include irritants
Health Hazards: Possible skin irritation, eye irritation if splashed; inhalation of dried powder or mist may irritate respiratory tract
Environmental Hazards: Avoid direct discharge to water bodies; persistence based on aquatic toxicity not tested
Label Elements: Pictogram: Exclamation mark (for certain formulations), Signal Word: Caution, Hazard Statements: May cause mild irritation, Precautionary Statements: Wear appropriate PPE
Other Hazards: Contains water as solvent, minimal fire hazard, always treat unknown blends with extra care
Chemical Characterization: Aqueous dispersion containing the following:
Main Components: Poly(3,4-ethylenedioxythiophene) CAS Number 155090-83-8, Poly(styrenesulfonate) CAS Number 25704-18-1
Water Content: Ranges from 90% to 98% by weight, depending on manufacturer
Other Ingredients: May contain stabilizers such as surfactants (<1%)
Impurities/Additives: May include sodium, sulfonate, or proprietary surfactant compounds for dispersion stability
Inhalation: Remove person to fresh air, keep at rest, seek medical attention if symptoms persist
Skin Contact: Wash affected area immediately with soap and water; remove any contaminated clothing
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue washing; seek attention if irritation develops
Ingestion: Rinse mouth with water, do not induce vomiting, obtain medical advice if discomfort occurs
Most Important Symptoms: Redness of skin, eye watering or stinging, mild throat irritation
Notes for Physician: Symptomatic treatment as needed, no specific antidote known
Flammability: Water-based solution shows low risk of burning, but dried residue is combustible
Suitable Extinguishing Media: Use water spray, CO2, foam, or dry chemical for surrounding fire
Special Hazards: In fire conditions, toxic vapors such as carbon monoxide, sulfur oxides, and low levels of organic decomposition products may form
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective gear
Precautions: Prevent fire water runoff from contaminating waterways and sewers
Personal Precautions: Use gloves, goggles, and protective clothing to avoid skin and eye contact
Spill Cleanup Procedures: Absorb liquid with inert materials such as sand, clay, or vermiculite; scoop residue into containers for disposal
Ventilation: Increase airflow in spill area, especially if large amounts are involved
Environmental Precautions: Prevent mixture from entering drains, watercourses, or soil through suitable containment
Decontamination: Clean small spills with plenty of water, dispose of wash water according to local regulations
Safe Handling: Use in well-ventilated environments; avoid inhaling aerosols or vapors; do not eat, drink, or smoke in handling area
Avoid Contact: Always wear protective gloves and eye protection; avoid direct contact with eyes, skin, and clothing
Storage Conditions: Store in tightly closed containers; keep in a cool, dry area away from strong oxidizers, acids, bases, or direct sunlight
Temperature Recommendations: Maintain storage temperatures between 5°C and 30°C; avoid freezing
Transfer Considerations: Use proper containers to avoid leaks; do not store in aluminum vessels
Exposure Limits: No established occupational exposure limits for PEDOT:PSS; observe workplace hygiene standards
Engineering Controls: Local exhaust ventilation recommended in case of spray or aerosol generation
Personal Protection: Nitrile or latex gloves, chemical splash goggles, lab coat or apron
Respiratory Protection: Use approved mask if mists or fumes become a concern during processing
Hygiene Measures: Thorough hand washing after use, remove contaminated clothing before reuse
Appearance: Dark blue to black liquid, little odor
Odor: Slight, not pungent
pH: Between 1.5 and 2.5 (highly acidic due to polystyrenesulfonate)
Melting/Freezing Point: Close to 0°C (aqueous base)
Boiling Point: Varies with water content, generally around 100°C
Flash Point: Not flammable in liquid form
Solubility: Miscible with water, not soluble in most organic solvents
Vapor Pressure: Negligible at room temperature
Density: ~1.0–1.2 g/cm3
Viscosity: Low to moderate, varies with concentration
Reactivity: Stable under recommended storage and handling
Chemical Stability: Stable in closed containers under normal temperatures; instability occurs with strong acids, bases, oxidizers
Hazardous Reactions: No violent polymerization or unexpected reactions under ambient conditions
Decomposition Products: Combustion yields CO2, carbon monoxide, sulfur dioxide, water
Conditions to Avoid: Prolonged exposure to sunlight, freezing, contact with incompatible chemicals
Acute Toxicity: Low inherent toxicity; no formal LD50 available for product as a mixture
Skin/Eye Irritation: May cause mild to moderate irritation; chronic or repeated exposure increases risk
Respiratory Irritation: Low risk under normal handling, increase with dried powder or fine mist
Sensitization: Not known to cause skin sensitization
Carcinogenicity: Not listed as carcinogen by IARC, NTP, OSHA
Chronic Effects: Chronic exposure data limited; no evidence for significant systemic toxicity
Other Health Effects: Consultation recommended for individuals with known allergies to polystyrenesulfonate derivatives
Aquatic Toxicity: No established LC50 or EC50 values; caution in large spills due to surfactant effects on aquatic organisms
Persistence and Degradability: Biodegradation occurs slowly in environment
Bioaccumulation: Not expected to bioaccumulate in aquatic or terrestrial species
Mobility in Soil: Highly mobile when in water solution; retain in soil through organic matter binding
Other Adverse Impacts: Avoid uncontrolled release to water or sewage systems
Disposal Methods: Must be disposed of according to local, regional, and national regulations for laboratory chemicals
Waste Treatment: Preferred route includes treatment via licensed chemical disposal facility
Container Disposal: Thoroughly rinse or triple-wash empty containers and recycle or incinerate where permitted
Prohibited Methods: Do not dispose of via regular sewer, open burning, or dumping into environment
UN Number: Not regulated as hazardous for transport in most countries
Proper Shipping Name: Non-hazardous chemical, laboratory supplies or aqueous polymer dispersion
Transport Hazard Class: Not classified under ADR/RID, IMDG, IATA
Packing Group: Not applicable
Special Precautions: Avoid extreme temperatures, use sealed containers to prevent leaks during transit
U.S. TSCA Inventory: Components are listed or meet the requirements
EU REACH Status: Monomers or blends either registered, exempt, or pre-registered
Canada DSL/NDSL: Consult relevant entries for compliance
SARA Title III: Not listed under Sections 302, 304, 313
Other Requirements: SDS should be available to all personnel, review local hazard labeling for specific state/country, review annual updates for chemical regulatory changes
