Product Name: Copper Pyrithione
Synonyms: Bis(N-oxopyridine-2-thionato) Copper; Pyrithione Copper Complex
Recommended Use: Industrial antifouling agent, preservative in paints and coatings
Supplier: Manufacturer or distributor name, address, and emergency phone number
CAS Number: 14915-37-8
Emergency Contact: Poison control center or local emergency services
GHS Classification: Acute Toxicity (Oral, Dermal, Inhalation), Skin and Eye Irritation, Aquatic Acute and Chronic Hazard
Signal Word: Warning
Hazard Statements: Harmful if swallowed, toxic to aquatic life with long lasting effects, causes skin and eye irritation, may cause allergic skin reactions
Pictograms: Exclamation mark, Environment
Precautionary Statements: Avoid release to the environment, wear protective gear, wash skin thoroughly after handling, avoid breathing dust or fumes
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Potential Health Effects: Nausea, vomiting, headache, dermatitis, respiratory discomfort
Chemical Name: Copper Pyrithione
Chemical Formula: C10H8CuN2O2S2
CAS Number: 14915-37-8
Content: >98% by weight
Impurities: Minor traces of unreacted pyrithione compounds, copper salts
General: Move person away from source of exposure, keep calm and monitor vital signs
Inhalation: Remove to fresh air, provide oxygen if breathing is difficult, seek medical help for persistent symptoms
Skin Contact: Immediately remove contaminated clothing, wash skin thoroughly with plenty of soap and water, get medical attention for persistent irritation or skin rash
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, seek medical attention
Ingestion: Rinse mouth, do not induce vomiting, drink plenty of water, obtain medical advice right away
Important Symptoms: Redness, itching, swelling, respiratory distress, nausea
Medical Attention: Symptomatic treatment, possible observation for respiratory or allergic reactions
Suitable Extinguishing Media: Water spray, dry chemical powder, carbon dioxide, foam
Unsuitable Extinguishing Media: Strong water jets due to possible contamination spread
Special Hazards: Copper fumes and sulfur oxides released in fire, toxic and irritating combustion products
Protective Equipment: Full protective gear, self-contained breathing apparatus
Firefighting Advice: Evacuate area if necessary, keep containers cool with water spray, approach upwind, prevent firefighting runoff from entering waterways
Explosion Hazard: None under normal fire conditions, but product may fuel combustion with production of toxic gases
Personal Precautions: Avoid breathing dust, wear chemical-resistant gloves, goggles, and mask
Environmental Precautions: Prevent entry into drains or surface water, contain spill with soil or sand
Methods for Cleanup: Shovel up residue, collect into leak-proof containers for proper disposal, wash area with plenty of water
Decontamination: Avoid dry sweeping to prevent dust, use wet methods for residue, ventilate enclosed spaces
Reporting: Inform relevant local and national authorities if major spill reaches waterways
Handling Recommendations: Avoid contact with skin, eyes, and clothing, work in a well-ventilated area, use only with proper chemical-resistant equipment
Storage Conditions: Keep in tightly closed original container, store in cool and dry, well-ventilated place, protect from direct sunlight and moisture
Incompatibilities: Strong oxidizers, acids, reducing agents
Storage Area Requirements: Avoid proximity to food, feedstuffs, and drinking water, label storage room with proper hazard symbols
Additional Precautions: Check container integrity regularly, do not reuse empty packaging
Occupational Exposure Limits: No official TWA for product, limit airborne dust as for nuisance particulates (<10 mg/m3 total dust)
Engineering Controls: Use local exhaust ventilation or containment to reduce exposure risk
Personal Protection: Chemical-resistant gloves (nitrile or neoprene), tight-fitting goggles or face shield, flame-retardant coveralls or lab coat, approved respirator if dust/fume levels exceed limits
Hygiene Measures: Do not eat, drink, or smoke during handling, wash hands after handling, separate work clothes from street clothes
Environmental Protection: Minimize emissions, avoid release to aquatic environments
Appearance: Greenish-blue crystalline solid or powder
Odor: Slight, musty odor
Odor Threshold: Not determined
pH (1% Solution): 7 to 9
Melting Point: Decomposes before melting (~250°C)
Boiling Point: Not applicable (decomposes)
Flash Point: Not flammable
Evaporation Rate: Not applicable
Vapor Pressure: Negligible at room temperature
Relative Density: 1.8–2.0 g/cm3
Solubility: Slightly soluble in water, soluble in many organic solvents
Partition Coefficient (log Kow): 0.91
Viscosity: Not applicable
Decomposition Temperature: Above 250°C
Explosive Properties: Not explosive
Oxidizing Properties: Not oxidizing
Chemical Stability: Stable under standard storage and handling conditions
Thermal Decomposition: Releases copper oxides, sulfur oxides, nitrogen oxides upon heating
Reactivity: No hazardous polymerization, fails to react violently with common materials
Incompatible Materials: Strong oxidizers, acids, reducing agents, reactive metals
Hazardous Reactions: May react slowly with acids, liberating toxic gases
Conditions to Avoid: Excessive moisture, strong heat, direct sunlight, incompatible materials
Routes of Exposure: Oral, dermal, inhalation, ocular
Acute Toxicity: Oral LD50 (rat): 300–500 mg/kg; Dermal LD50 (rabbit): >2000 mg/kg
Chronic Toxicity: Repeated exposure may cause skin sensitization, liver or kidney effects in lab animals
Skin/Eye Irritation: Causes irritation to skin and eyes, risk of allergic skin reactions
Respiratory Sensitization: Reports exist of asthma-like symptoms in workplace settings
Mutagenicity/Carcinogenicity: No strong evidence for genetic or cancer risk
Additional Effects: Headaches, nausea, vomiting, drowsiness if ingested or inhaled in large amounts
Medical Surveillance: Sensitivity testing recommended for frequent users
Toxicity to Aquatic Life: Highly toxic to fish and aquatic invertebrates even at low concentrations (LC50 for fish: 2–5 µg/L)
Degradability: Not readily biodegradable, persists under normal conditions
Bioaccumulation: Copper ions may build up in aquatic organisms, risk of secondary food chain effects
Mobility in Soil: Moderately mobile, binds to organic matter and clay
Aquatic Fate: Shown to suppress algae and microbial populations in water
Other Effects: Disrupts cellular respiration enzymes in marine invertebrates
Regulatory Conclusions: Use requires strict controls to protect ecosystems
Waste Handling: Dispose of as hazardous waste under local, regional, and national guidelines
Disposal Methods: Incineration at authorized facility or chemical treatment to remove copper and sulfur
Do Not: Discharge into sewer systems, waterways, or soil
Contaminated Packaging: Rinse with suitable solvent, dispose of as hazardous waste
Special Considerations: Follow all local and national environmental laws, consult expert hazardous waste disposal contractor for bulk material
UN Number: 3077
UN Proper Shipping Name: Environmentally Hazardous Substance, Solid, N.O.S. (contains Copper Pyrithione)
Transport Hazard Class: 9
Packing Group: III
Marine Pollutant: Yes
Label Required: Miscellaneous dangerous goods, Marine Pollutant
Special Transport Notes: Keep container tightly sealed, carry documentation on substance hazards, do not transport with food or feedstuffs
Inventory Listings: Registered under TSCA (USA), listed in EINECS (EU), and other regional inventories
Hazard Classifications: Classified under CLP Regulation (EC) No 1272/2008, subject to biocidal product regulations
Workplace Restrictions: Subject to OSHA hazardous materials standards
Environmental Restrictions: Specific limits for environmental emissions and antifouling coating use
Labeling: Must carry GHS and environmental hazard labels, include risk and safety phrases
Other Regulations: Restricted for use in marine paints in some countries, compliance with national and state pesticide regulations essential
Right-to-Know: Lists in state worker right-to-know laws (e.g., CA Proposition 65 assessment completed)
