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Product Name: Tert-Butyl Peroxy-2-Ethylhexanoate
Chemical Formula: C12H24O3
Synonyms: t-Butyl peroxy 2-ethylhexanoate, Perester TBPEH
Recommended Uses: Polymerization initiator, cross-linking agent, curing of resins and plastics
Manufacturer’s Details: Contact supplied on container label or procurement documentation
Emergency Telephone: Use company emergency contact or local national poison center
CAS Number: 3006-82-4
UN Number: 3107
EC Number: 221-110-7
GHS Classification: Organic Peroxide Type E, Eye Irritation Category 2, Acute Toxicity (Oral) Category 5
Hazard Statements: Heating may cause fire or explosion; causes serious eye irritation; may be harmful if swallowed
Pictograms: Flame, Exclamation Mark
Signal Word: Danger
Precautionary Statements: Keep away from heat, sparks, open flames, and hot surfaces; keep cool; avoid breathing dust and fumes; wash hands thoroughly after handling; wear protective gloves, clothing, and eye/face protection
Chemical Name: Tert-Butyl Peroxy-2-Ethylhexanoate
Content: ≤52%
Inert Solid: ≥48% (most commonly in phthalate, silica, or clay form as stabilizing carrier)
Impurities: Peroxide acids, solvents, stabilizers at trace levels from manufacturing
Relevant Exposure Limits: None established for the mixture; follow limits set for organic peroxides
Inhalation: Remove person from exposure; ensure access to fresh air; seek medical attention if symptoms appear
Skin Contact: Take off contaminated clothing; wash skin with plenty of water and soap; medical attention required for irritation or burns
Eye Contact: Rinse eyes with running water for at least 15 minutes while holding eyelids open; seek immediate medical help
Ingestion: Rinse mouth; do not induce vomiting; call poison control or seek medical help right away
Most Important Symptoms: Eye and skin irritation, possible digestive discomfort
Notes for Doctor: Peroxides can cause tissue damage; provide symptomatic treatment and monitor for complications
Suitable Extinguishing Media: Water spray, foam, dry chemical
Unsuitable Extinguishing Media: Carbon dioxide over large areas can be ineffective; avoid dry combustibles
Hazards from Combustion: Carbon monoxide, carbon dioxide, organic fumes, acetic acid, possibly flammable vapors
Protective Equipment: Full protective gear including self-contained breathing apparatus; evacuate area if safe to do so
Specific Hazards: Explosive decomposition possible under fire conditions; cool containers with water from a distance
Personal Precautions: Evacuate non-essential personnel; avoid skin, eye, and respiratory contact; wear chemical splash goggles, gloves, flame-resistant clothing
Environmental Precautions: Prevent entry into waterways, sewers, or confined spaces; notify authorities in case of environmental contamination
Cleanup Methods: Collect spilled material with non-combustible absorbent (vermiculite, sand); use spark-proof tools; transfer in suitable containers; ventilate area; dispose according to local regulations
Handling: Use only in properly ventilated areas; keep away from ignition sources; avoid impact, friction, and contamination with incompatible materials; ground equipment and containers; open carefully
Storage: Store in original, tightly closed containers; keep in a cool, dry, well-ventilated, flame-proof area; temperature below 30°C; segregate from oxidizers, acids, bases, reducing agents
Exposure Limits: No specific occupational exposure limits identified; use control measures to minimize dust and vapor
Engineering Controls: Mechanical ventilation; no recirculation of exhaust air; emergency eyewash and safety shower nearby
Personal Protection: Chemical-resistant gloves, flame-retardant protective clothing, safety goggles, face shield, approved respiratory protection under high concentration
Hygiene Measures: Wash hands after handling; remove contaminated clothing before eating or leaving work; routine decontamination of work surfaces
Appearance: White to off-white solid or paste
Odor: Faint ester-like, slightly pungent
Melting Point/Range: 16–24°C
Boiling Point: Decomposes above 60°C
Decomposition Temperature: Initial ~60°C, violent above 100°C
Vapor Pressure: Low at 20°C
Solubility: Insoluble in water, soluble in many organic solvents
Density: Approx. 1.0–1.1 g/cm³
pH: Not applicable (non-aqueous solid)
Flash Point: >80°C (closed cup, for mixture)
Autoignition Temperature: Not determined
Partition Coefficient: Not established
Chemical Stability: Stable under recommended storage; sensitive to shock, friction, heat
Incompatible Materials: Reducing agents, acids, alkalis, heavy metal salts, combustibles
Hazardous Polymerization: Not expected under normal storage and handling
Decomposition Products: Carbon dioxide, carbon monoxide, acetone, t-butanol, organic acids
Conditions to Avoid: Heating, sparks, open flame, direct sunlight, mechanical shock
Likely Routes of Exposure: Skin, eyes, inhalation, ingestion
Acute Effects: Eye and skin irritation, headache, respiratory tract discomfort, nausea
Chronic Effects: Based on similar peroxyesters, not suspected to cause long-term harm, but hand eczema and other allergic responses can develop with repeated contact
LD50 (Oral, Rat): Estimated >2000 mg/kg
Carcinogenicity: Not listed by IARC, OSHA, or NTP
Mutagenicity: No reliable data to suggest mutagenic effects
Other Effects: Persons with allergies or asthma may be more susceptible
Aquatic Toxicity: Expected to be toxic to aquatic life (no definitive LC50 data, but organic peroxides typically disrupt aquatic organisms at mg/L concentrations)
Environmental Persistence: Decomposes into smaller organic molecules, some biodegradable, but risk of oxygen depletion in water
Bioaccumulation: Low potential for bioaccumulation
Mobility: Limited due to low water solubility; material binds to soil and organic matter
Other Adverse Effects: Can release hazardous organic acids or alcohols on breakdown
Waste Handling: Small quantities: blend with inert, combustible absorbent and burn in approved incinerator under controlled conditions
Prohibited Disposal: Do not discharge to natural waters or sewers
Containers: Empty cautiously and triple rinse with compatible solvent; puncture and dispose of drums as hazardous waste
Regulatory Waste Codes: Subject to local, national, or regional hazardous waste treatment and disposal requirements; consult trained hazardous waste experts
UN Number: 3107
UN Proper Shipping Name: Organic Peroxide Type E, Solid
Transport Hazard Class: 5.2
Packing Group: II (varies by formulation and carrier)
Labels: Organic peroxide (flame symbol)
Special Precautions: Keep containers upright and tightly closed; avoid vibration, heat, and shocks during transport; follow vehicle segregation for oxidizers and peroxides
TSCA Status: Listed in United States TSCA inventory
REACH Registration: Registered or pre-registered in the European Union
OSHA Status: Handled as hazardous chemical under OSHA Hazard Communication Standard
SARA Title III: Subject to reporting under certain release scenarios (Section 302/313)
Labeling Requirements: GHS-compliant with pictograms, signal words, precautionary and hazard statements
Other International Regulations: Complies with applicable directives or guidelines in Europe, China, Canada, Australia, and Japan for organic peroxides; consult regional lists for additional restrictions
