© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: Tert-Butyl Peroxypivalate
Synonyms: Peroxypivalic acid, tert-butyl ester; TBPP
CAS Number: 614-45-9
Recommended Use: Polymerization initiator, industrial chemical processes
Supplier Identification: Chemical manufacturing or distribution companies specializing in organic peroxides
Contact Information: Emergency phone numbers for chemical emergencies; general contact for safety inquiries and technical support
Emergency Overview: Flammable, reactive, and health hazard; strong oxidizer; can lead to fire or explosion if not handled properly
GHS Classification: Organic peroxide Type C, Flammable liquid Category 3, Acute Toxicity Oral Category 4, Eye damage Category 2, Skin irritation Category 2
Signal Word: Danger
Hazard Statements: Heating may cause fire; Harmful if swallowed; Causes skin irritation; Causes serious eye irritation; May cause respiratory irritation
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames, and hot surfaces. Use explosion-proof equipment. Avoid contact with skin, eyes, and clothing. Wear protective gloves, clothing, and eye protection. Do not breathe vapors. Wash hands and exposed skin thoroughly after handling. Use only outdoors or in a well-ventilated area.
Potential Health Effects: Inhalation may cause respiratory irritation, headache, dizziness; skin contact may cause redness, blistering; eye contact leads to irritation, possible corneal injury; ingestion may cause gastrointestinal distress and systemic toxicity
Chemical Name: Tert-Butyl Peroxypivalate
CAS Number: 614-45-9
Concentration Range: ≤77%
Stabilizer: Often diluted or blended with inert organic solvents for transport and storage safety (names and concentrations of stabilizers or solvents, such as phlegmatizers, can vary by supplier)
Impurities: Includes tert-butanol, pivalic acid, unreacted starting materials in trace amounts, and stabilized inhibitors to control decomposition
Eye Contact: Immediately flush with water for at least 15 minutes, remove contact lenses if present, seek medical attention without delay
Skin Contact: Remove contaminated clothing, flush skin with plenty of water and soap, get medical attention if irritation persists
Inhalation: Move person to fresh air, keep at rest, administer oxygen if breathing is difficult, seek medical care for persistent symptoms
Ingestion: Rinse mouth, avoid inducing vomiting, never give anything by mouth to an unconscious person, obtain urgent medical intervention
Most Important Symptoms: Severe eye irritation, burns, respiratory difficulty, nausea; sensitization risk with repeated contact
Medical Attention: Immediate consultation with healthcare personnel required; symptomatic and supportive treatment
Suitable Extinguishing Media: Carbon dioxide (CO₂), dry chemical powder, large volumes of water (for cooling only, not for extinguishing burning liquids), foam compatible with organic peroxides
Fire and Explosion Hazards: Highly reactive and flammable; decomposes rapidly under heat, shock, friction, or contamination; decomposition produces flammable vapors and toxic fumes including carbon monoxide, carbon dioxide
Protective Equipment for Firefighters: Self-contained breathing apparatus (SCBA), full protective suit resistant to chemicals and heat
Special Firefighting Instructions: Approach fire from upwind position, evacuate personnel in a wide area, cool containers with water spray to prevent rupture, avoid build-up of pressure, consider potential for violent explosion
Personal Precautions: Evacuate area, eliminate ignition sources, ventilate space; wear protective clothing, gloves, goggles, and organic vapor respirator as necessary
Environmental Precautions: Prevent entry into drains, sewers, water bodies; inform authorities in case of environmental contamination
Methods for Clean-up: Absorb with earth, vermiculite, or inert absorbent; collect into container lined with polyethylene or polypropylene (avoid metal or incompatible materials); do not use sawdust or combustible absorbents; transport waste to licensed facility; decontaminate area with soap and copious water
Spill Disposal: Dispose of materials as hazardous waste following federal, state, and local requirements; no disposal to regular municipal systems
Handling: Keep away from all sources of heat, spark, and direct sunlight; open containers only in inert atmosphere or well-ventilated areas; use non-sparking tools; prevent contamination by incompatible substances; avoid shock and friction
Personal Hygiene: Wash hands before eating, drinking, or smoking; remove contaminated clothing and clean before reuse
Storage: Store in original container tightly closed and clearly labeled at recommended temperatures (below 30°C, ideally between 2-8°C); segregate from oxidizers, acids, reducing agents, combustible and flammable materials; avoid storage near metal or copper alloys; install temperature monitoring and control systems; use secondary containment for bulk storage
Material Incompatibilities: Strong acids, alkalis, reducing agents, heavy metal compounds, strong oxidizers, combustible materials including paper, wood
Technical Controls: Emergency eye wash and safety shower near work area, proper ventilation systems, spark-proof equipment
Exposure Limits: No specific OSHA or ACGIH limits for Tert-Butyl Peroxypivalate; adopt exposure guidelines for organic peroxides and total hydrocarbons where relevant
Engineering Controls: Local exhaust ventilation, explosion-proof systems, temperature and pressure monitoring at all positions of storage and transfer
Personal Protective Equipment: Chemical-resistant gloves (nitrile, butyl rubber); splash-proof chemical goggles and face shield; impermeable clothing, lab apron or full suit depending on risk; organic vapor respirator in case of inadequate ventilation or exposure risk
Hygiene Measures: No eating, smoking, or drinking in working area; prompt removal and decontamination of contaminated clothing; skin protection by barrier creams discouraged due to penetration risk
Appearance: Colorless to pale yellow liquid
Odor: Slight, pungent
Odor Threshold: Not established
pH: Not applicable
Melting/Freezing Point: Below -20°C
Boiling Point: Decomposes before boiling (usually above 102°C, but decomposition temperature is operationally significant)
Flash Point: 20-30°C (open cup, varies with formulation and dilution)
Evaporation Rate: Not determined
Flammability: Highly flammable liquid
Upper/Lower Flammability Limits: Not established
Vapor Pressure: 4 to 8 mmHg at 20°C
Vapor Density: No data
Relative Density: 0.95 to 1.0 (water = 1)
Solubility: Insoluble in water, soluble in many organic solvents
Partition Coefficient (log Kow): Not available
Auto-Ignition Temperature: Close to 230°C
Decomposition Temperature: Begins around 102°C
Viscosity: Thin liquid
Molecular Formula: C9H18O3
Chemical Stability: Unstable at elevated temperatures, sunlight, mechanical shock or contamination
Conditions to Avoid: Exposure to heat, open flame, sparks, physical shock, friction, and prolonged contact with air
Incompatible Materials: Strong acids, strong bases, reducing agents, heavy metal salts or ions, combustible and flammable substances, organic materials, strong oxidizers
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, tert-butanol, pivalic acid, other toxic and irritating organic vapors
Hazardous Polymerization: Not expected; violent decomposition or deflagration is chief risk; use only with recommended inhibitors and stabilizers
Acute Toxicity: Oral LD50 (rat): ~485 mg/kg; inhalation and dermal toxicity data indicate moderate hazard at low doses
Skin Corrosion/Irritation: Causes substantial skin irritation, redness, possible chemical burns with longer exposure
Eye Damage/Irritation: Severe irritation and corneal damage possible, lacrimation, conjunctivitis
Respiratory Sensitization: Vapors may cause headache, nausea, coughing, dizziness, possible lung irritation at higher concentrations
Ingestion Symptoms: Abdominal pain, nausea, vomiting, drowsiness, signs of CNS depression
Chronic Effects: Repeat skin contact may result in dermatitis; no conclusive evidence for carcinogenicity or reproductive toxicity at standard industrial exposures
Target Organs: Eyes, skin, respiratory tract, central nervous system
Other Effects: No data for mutagenicity, teratogenicity; handle with caution due to reactivity
Ecotoxicity: Toxic to aquatic life; short-term exposure may result in acute toxicity to fish and invertebrates; data show EC50 values for some aquatic species in low mg/L range
Persistence/Degradability: Undergoes rapid breakdown in environment, forms t-butyl alcohol and pivalic acid; both biodegradable to some degree, persistent hydrolysis possible in water
Bioaccumulation: Limited data; main breakdown products show low bioaccumulation potential; parent compound not expected to persist in food chain
Mobility in Soil: Volatile, miscible in organic solvents, unlikely to persist in surface waters; may volatilize or partition into sediment under some conditions
Other Adverse Effects: Avoid environmental release; contributes to chemical oxygen demand if released in bulk
Waste Treatment Methods: Incinerate in approved chemical incinerator equipped with afterburner and scrubber; destruction under controlled conditions required
Container Disposal: Decontaminate prior to recycling; plastic or glass containers preferred to prevent catalytic decomposition
Precautions: Do not dispose of with household or municipal waste; do not allow entry into surface water, ditches, or drains; avoid uncontrolled combustion
Disposal Regulations: Follow all applicable federal, state, and local chemical waste disposal regulations; hazardous waste codes may apply due to peroxide and toxicity characteristics
UN Number: UN 3107
Proper Shipping Name: Organic Peroxide Type C, Liquid (Tert-Butyl Peroxypivalate ≤77%)
Transport Hazard Class: 5.2 (Organic Peroxides)
Packing Group: II (medium danger)
Labels Required: Flame, organic peroxide symbol
Special Provisions: Temperature control required during transit; emergency response guide numbers specific to organic peroxides
Packaging Instructions: Use only containers approved for organic peroxides; segregate from foodstuffs and incompatible materials
Environmental Hazards: Marine pollutant designation may apply; spillages must be reported in accordance with local and international regulations
OSHA: Covered under OSHA hazardous chemicals; requires Safety Data Sheet and Hazard Communication program compliance
TSCA: Listed on the United States TSCA Inventory
SARA Title III (Sections 311/312): Fire hazard, reactive hazard, acute health hazard
SARA Title III (Section 313): Not subject to reporting
EPA Regulations: Classified as hazardous waste (RCRA); generation, storage, and disposal subject to EPA regulations
Other Regulations: ADG/IMDG/IATA packaging and documentation required for shipping; restrictions on quantity and conditions for air and sea transport
International Inventories: Listed on EINECS, DSL (Canada), AICS (Australia), ENCS (Japan)
Labeling Requirements: GHS labeling in all jurisdictions, NFPA and HMIS ratings for workplace notification
