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Product Name: Tert-Butyl Peroxypivalate
Chemical Type: Organic peroxide, solution type B
CAS Number: 614-45-9
Use: Polymerization initiator in plastics and resins, specialty chemical processing
Manufacturer/Supplier: Contact detailed on supplied invoice or shipment documentation
Emergency Contact: Refer to national chemical emergency response center or posted safety office phone number
Hazard Classification: Organic peroxide (Type D), Flammable liquid, Acute toxicity (oral and dermal), Serious eye irritation, Skin sensitization
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor, May cause fire or explosion, Harmful if swallowed or in contact with skin, Causes serious eye irritation, Causes skin irritation, May cause allergic skin reaction
Precautionary Statements: Keep away from heat, sparks, and open flames. Avoid breathing vapors. Wear protective gloves and eye protection. Wash skin thoroughly after handling. Use in well-ventilated areas only. Store in original container away from incompatible materials.
Physical Hazards: Decomposes violently at elevated temperatures
Health Hazards: Sensitizer, can provoke skin inflammation or allergic symptoms
Principal Component: Tert-Butyl Peroxypivalate [Content between 27% and 67%]
CAS Number (Tert-Butyl Peroxypivalate): 614-45-9
Diluent (Type B): Hydrocarbon solvent or phthalate-based carrier (not less than 33%)
Impurities: Minor organic peroxides, hydrocarbon residues, trace stabilizers
Hazardous Ingredients: Tert-Butyl Peroxypivalate (flammable, irritant), hydrocarbon carrier (flammable, may cause drowsiness or dizziness)
Inhalation: Remove the affected person to fresh air immediately; supply oxygen if breathing is difficult. Seek medical attention if any symptoms persist.
Skin Contact: Remove contaminated clothing. Wash thoroughly with soap and water. If skin irritation or inflammation occurs, seek medical advice.
Eye Contact: Rinse gently with water for at least 15 minutes. Remove contact lenses if present and easy to do. Obtain medical attention if irritation continues.
Ingestion: Do not induce vomiting. Rinse mouth and drink water only if the person is conscious. Seek immediate medical assistance.
Special Symptoms and Effects: May cause delayed skin sensitization; monitor for allergic reactions.
Suitable Extinguishing Media: Dry powder, carbon dioxide, alcohol-resistant foam; do not use water jets as these spread the fire.
Specific Hazards: Decomposition releases flammable and toxic gases, risk of explosion if heated in closed containers. Vapors are heavier than air and may travel to ignition sources.
Firefighter Protection: Full chemical protective suit and self-contained breathing apparatus; remain upwind of the fire, avoid vapor inhalation.
Explosion Hazard: Organic peroxides may undergo violent decomposition under fire conditions; containers can rupture and project material.
Advice for Firefighters: Cool containers exposed to fire with spray water, remove combustible materials from vicinity.
Personal Precautions: Evacuate area, ventilate spaces, use personal protective equipment including gloves, eye protection, and suitable respirator.
Environmental Precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains, surface water, or soil.
Containment and Cleaning: Eliminate all ignition sources. Contain spilled liquid with sand, earth, or inert absorbent. Do not clean up with combustible materials such as sawdust, cloth, or paper. Collect in specialized hazardous waste containers for disposal. Wash spill area after collection.
Disposal: Dispose of residues in accordance with regulatory guidelines.
Handling Precautions: Handle only in well-ventilated areas. Avoid inhalation, ingestion, and contact with skin and eyes. Keep container tightly closed when not in use. Prevent any contact with incompatible materials or sources of ignition.
Storage Conditions: Store at temperatures recommended by manufacturer (usually between 2°C and 8°C), in a cool, dry, well-ventilated, explosion-proof location. Store separately from acids, bases, reducing agents, and direct sunlight.
Container Materials: Use original, approved containers with secure, non-metallic closures to prevent contamination.
Incompatibilities: Metals, strong acids, bases, reducing agents, combustible materials.
Special Storage: Never repackage. Store with proper identification and hazard labeling.
Occupational Exposure Limits: Not established for Tert-Butyl Peroxypivalate; limit exposure by engineering controls.
Engineering Controls: Use explosion-proof local exhaust systems, fume hoods, and well-ventilated working areas.
Personal Protective Equipment: Chemical-resistant nitrile gloves, splash-proof goggles or full-face shield, flame-resistant lab coat, long pants, closed footwear.
Respiratory Protection: If ventilation insufficient, use organic vapor respirator approved for peroxides.
Other Precautions: No eating, drinking, or smoking in work areas. Wash hands thoroughly after handling. Remove contaminated clothing immediately.
Appearance: Colorless to pale yellow liquid
Odor: Slightly pungent, ether-like
Boiling Point: Varies by diluent; typically around 90-120°C (closed cup)
Melting Point: Below -20°C
Flash Point: 18 - 25°C depending on composition
Vapor Pressure: 12 - 35 mmHg at 20°C
Solubility: Insoluble in water, soluble in organic solvents
Density: 0.95 – 1.05 g/cm³ (20°C)
Viscosity: Low to moderate
Partition Coefficient: log Pow >3 (hydrophobic)
Chemical Stability: Stable under recommended storage conditions and away from contaminants
Thermal Decomposition: Above 40°C, breaks down to produce flammable gases
Hazardous Reactions: Contact with metals, oxidizers, reducing agents can trigger violent decomposition
Incompatible Materials: Acids, bases, heavy metal compounds, combustibles
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, tert-butanol, volatile organic acids, irritating fumes
Polymerization: Does not spontaneously polymerize
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Harmful if swallowed or absorbed through skin. LD50 via oral rat: 500 – 1500 mg/kg (estimated based on concentration); LD50 dermal (rabbit): >2000 mg/kg due to dilution
Skin and Eye Effects: Causes irritation, redness, possible inflammation; can trigger allergic reactions with repeated exposure
Respiratory Effects: Inhalation may produce coughing, headaches, dizziness, and narcosis in poorly ventilated spaces
Long-Term Effects: Possible sensitization, eczema, rare liver or kidney toxicity after chronic overexposure
Carcinogenicity/Mutagenicity: Not listed by IARC, NTP, OSHA; no discernible evidence in limited animal studies
Aquatic Toxicity: Toxic to aquatic organisms at high concentrations, risk of long-term adverse effects in the aquatic environment
Bioaccumulation Potential: Moderate based on hydrophobic character
Mobility in Soil: Limited due to low solubility in water, higher presence in surface water or sediment with accidental release
Environmental Precautions: Avoid release to the environment. Collect spills for approved disposal, prevent substance from entering sewers and natural waterways.
Waste Handling: Treat all waste as hazardous. Incinerate only in approved facilities equipped to handle organic peroxides. Do not direct-dispose into drains or environment.
Recommended Disposal Methods: Large quantities require stabilization and destruction by professionally licensed contractors.
Contaminated Packaging: Rinse empty containers with inert solvent, then destroy by controlled incineration; do not reuse.
Regulatory Requirements: Dispose of in line with local, regional, and national environmental regulations.
Special Notes: Comply with all site-specific hazardous waste procedures and documentation.
United Nations Number (UN): UN 3107
Proper Shipping Name: Organic peroxide type D, liquid (Tert-Butyl Peroxypivalate, solution)
Hazard Class: 5.2 (Organic peroxides)
Packing Group: II
Labeling Requirements: 5.2 Organic Peroxide, flammable
Transport Precautions: Avoid temperature extremes, direct sunlight, and mechanical impact. Only certified trained personnel should handle.
Special Transport Provisions: Emergency temperature monitoring systems for shipments above 25 liters. Document emergency contact and action plan.
Inventory Status: Listed on national and international chemical inventories (TSCA, EINECS, AICS, DSL, etc.)
Classification: Subject to chemical hazard communication and workplace safety training regulations
Regulatory Restrictions: Use and storage regulated as organic peroxide. Quantities on-site may be restricted by local hazardous substances control laws
Label Elements: Globally Harmonized System pictograms, signal words, STOT statements
Additional Notes: Subject to reporting under Emergency Planning and Community Right-to-Know Act (EPCRA, Section 302). Requires Safety Data Sheet and risk management documentation per OSHA 1910.1200, REACH, and local regulations.
