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Product Name: Tert-Butyl Peroxypivalate
Synonyms: TBPP, Tert-butyl peroxy-2,2-dimethylpropanoate
CAS Number: 614-45-9
Recommended Use: Industrial initiator, polymerization catalyst
Manufacturer/Supplier: Manufacturer contact information required for procurement and emergency communication
Emergency Phone Numbers: Accessible 24-hour service through company or local poison center
Proper Shipping Name: Organic Peroxide Type E, Liquid (Tert-butyl Peroxypivalate, solution with diluent)
UN Number: UN3109
Hazard Classification: Organic Peroxide Type E, Acute Toxicity (Oral), Eye Irritation, Specific Target Organ Toxicity
Signal Word: Danger
Hazard Statements: Heating may cause fire, causes serious eye irritation, may cause respiratory irritation, harmful if swallowed
Pictograms: Flame, exclamation mark, health hazard
Precautionary Statements: Keep away from heat/sparks/open flames/hot surfaces, store away from reducing agents, handle under properly ventilated conditions, avoid release to environment, wear protective clothing and eye protection, do not eat, drink or smoke when using this product
Substance: Mixture
Tert-Butyl Peroxypivalate: ≤ 27% by weight
Diluent Type B (hydrocarbon mixture, proprietary or specified by supplier): ≥ 73% by weight
Other Components: Stabilizers/inhibitors in trace amounts if present
Impurities: None expected at significant levels
Inhalation: Move affected person to fresh air immediately, maintain airway and breathing, seek medical attention if symptoms develop such as coughing, dizziness, or headache
Skin Contact: Remove contaminated clothing, wash with plenty of soap and water, do not use solvents, seek treatment for persistent irritation or burns
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if easy to do, continue rinsing, seek medical attention without delay
Ingestion: Rinse mouth with water, do not induce vomiting, call poison center or doctor right away, monitor for symptoms such as nausea or abdominal pain
Advice for Medical Responders: Provide oxygen if breathing is impaired, treat symptomatically, monitor vital signs, support respiratory and cardiovascular function as needed
Suitable Extinguishing Media: Water spray (fog), foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: Direct water jet (can spread burning liquid)
Specific Hazards: Decomposes when heated, releasing flammable and toxic gases including carbon oxides; explosion possible under confinement
Protective Equipment for Firefighters: Full protective clothing and self-contained breathing apparatus
Special Precautions: Evacuate area, cool intact containers with water spray, control runoff water, stay upwind
Personal Precautions: Evacuate unnecessary personnel, eliminate all ignition sources, ventilate area, avoid breathing vapors, wear protective equipment including gloves, goggles, and proper respiratory protection when required
Environmental Precautions: Prevent product from entering waterways, drains, or soil, contain spill with inert absorbents such as vermiculite or earth
Clean-Up Methods: Absorb with inert material, place in designated chemical waste containers, avoid creating dust or mist, wash area thoroughly after removal
Additional Guidance: Notify authorities if material enters environment or public drainage systems, refer to emergency response plan for further action
Precautions for Safe Handling: Use explosion-proof equipment, implement static discharge precautions, use only non-sparking tools, keep away from heat and incompatible materials, avoid inhalation of vapors, minimize contact with skin and eyes, practice good hygiene after handling
Conditions for Safe Storage: Store in original closed containers at recommended temperature (typically below 30°C/86°F but see supplier instructions), designate a cool, well-ventilated, fire-resistant area away from direct sunlight and oxidizing or reducing agents, segregate from acids, bases, strong oxidizers, and combustibles, post warning signs to restrict access
Other Recommendations: Store away from food and drink, maintain regular inspection of containers for leaks or damage, have spill control and fire-fighting equipment ready nearby
Occupational Exposure Limits: No established US OSHA limit for TBPP, observe limitations and recommendations from supplier or local regulations, minimize exposure through engineering controls
Engineering Controls: Use fume hoods, local exhaust ventilation, monitor atmospheric concentrations in working areas, control temperature to minimize risk
Personal Protective Equipment (PPE): Wear chemical-resistant gloves (nitrile, neoprene), goggles or face shield, flame-retardant clothing, safety shoes, approved respirator for organic vapor when airborne concentrations warrant protection
Hygiene Measures: Wash hands and exposed skin before breaks and after handling, prohibit eating, drinking, and smoking in areas where chemical is handled or stored
Appearance: Clear, colorless to pale yellow liquid
Odor: Slight, sweet aromatic; may sometimes seem pungent
Odor Threshold: Not established
pH: Not applicable (organic mixture)
Melting Point/Freezing Point: Not determined; product remains liquid below room temperature
Initial Boiling Point and Boiling Range: >150°C for diluent; TBPP decomposes before boiling
Flash Point: Approximately 38–55°C (for the solution); lower for pure TBPP
Evaporation Rate: No data available
Flammability: Flammable liquid and vapor
Upper/Lower Flammability or Explosive Limits: Not determined but presumed low for peroxide
Vapor Pressure: Low at 20°C, rises with temperature
Vapor Density: Heavier than air
Relative Density: Typically 0.87–0.95 (water = 1)
Solubility: Insoluble in water, soluble in common organic solvents
Partition Coefficient (n-octanol/water): No data
Auto-ignition Temperature: Above 240°C, varies by mixture
Decomposition Temperature: Begins near or above 60°C, vigorous at higher temperatures
Viscosity: Low to moderate, pourable liquid
Chemical Stability: Product can decompose violently under heating or mechanical impact, especially if pure or contaminated
Hazardous Reactions: Vigorous reaction possible with acids, bases, reducing agents, or strong oxidizers; avoid contact with combustible materials
Conditions to Avoid: Heat, sources of ignition, direct sunlight, friction, shock, contamination by incompatible chemicals
Incompatible Materials: Metals, strong acids, alkalis, reducing agents, oxidizers
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, various organic compounds, flammable gases; some toxic or irritating fumes produced
Likely Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Harmful if swallowed, can cause mouth and stomach irritation, potential for central nervous system effects
Skin Corrosion/Irritation: May cause skin dryness, redness or irritation with prolonged or repeated exposure
Serious Eye Damage/Irritation: Causes serious eye irritation, possible temporary damage
Respiratory or Skin Sensitization: Risk of sensitization exists for some individuals; avoid inhalation
Germ Cell Mutagenicity: Not classified as mutagenic, lacks available evidence
Carcinogenicity: No components listed as carcinogenic by IARC, NTP, other authorities
Reproductive Toxicity: No evidence found in public sources
Specific Target Organ Toxicity (Single/Repeated Exposure): Irritates respiratory system, may affect liver or kidneys with repeated overexposure
Symptoms of Exposure: Dizziness, headache, nausea, skin and eye discomfort, respiratory irritation, high exposures could suppress CNS
Ecotoxicity: Poisonous to aquatic life, especially with direct release to water bodies in concentrated form
Persistence and Degradability: Slowly decomposes in air and water to organic acids and carbon dioxide
Bioaccumulative Potential: Low to moderate potential; partitioning favors nonpolar phases, but expected to degrade
Mobility in Soil: Moderately mobile, may evaporate or leach if spilled
Other Adverse Effects: Product and its breakdown products may harm fish and invertebrates; effects increase with amount and frequency of release
Disposal Methods: Collect and contain any residues, incinerate in approved facility under controlled conditions, avoid landfill due to risk of fire and groundwater contamination
Container Disposal: Empty containers must be triple rinsed, punctured or crushed, and disposed in compliance with local regulations
Regulatory Requirements: Obtain permission from authorities for off-site treatment or disposal, ship to licensed hazardous waste contractor
UN Number: UN3109
Proper Shipping Name: Organic Peroxide Type E, Liquid (Tert-butyl Peroxypivalate, solution)
Transport Hazard Class: 5.2 (organic peroxide)
Packing Group: II (medium hazard)
Labels Required: Organic Peroxide, flammable symbol
Special Precautions: Protect from sunlight, avoid temperature excursions, ensure containers are secured
Marine Pollutant: Product may be harmful to aquatic life, classified as environmentally hazardous when shipped in bulk
TSCA Status: All chemical components listed or otherwise compliant with United States TSCA inventory
SARA Title III: Product not extremely hazardous but may meet OSHA hazardous chemical definition; reportable quantities apply for major spills
EPA Regulations: Environmental restrictions on release into water or soil; hazardous waste classification when discarded
OSHA Classification: Hazards include organic peroxide, irritant, specific organ toxicity
International Inventories: Present on or exempt from inventories in Europe (EINECS/REACH), Australia (AICS), Canada (DSL/NDSL), Japan (ENCS)
Labeling Requirements: Follow GHS standards for hazard pictograms, signal words, and precautionary statements
Other Legal Obligations: Comply with regional and local storage, transport, and worker training laws
