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Product Name: Tert-Butyl Peroxy-2-Ethylhexanoate
Concentration: 32% < Content ≤ 52%, Type B Diluent ≥ 48%
Chemical Family: Organic Peroxide
Recommended Use: Polymerization initiator, crosslinking agent, curing agent in plastics and rubbers
Supplier Information: Manufacturer address, customer service phone number, emergency contact number
Synonyms: tert-Butylperoxy(2-ethylhexanoate), Peroxide, 2-ethylhexanoic acid, tert-butyl ester
CAS Number: 3006-82-4
UN Number: 3107
Use Restrictions: Commercial, industrial, and laboratory use only
Classification: Organic peroxide Type C, Acute toxicity (oral, inhalation, dermal), Skin and eye irritant
Label Elements: Flame (oxidizer), exclamation mark for health hazard
Signal Word: Danger
Hazard Statements: Heating may cause fire or explosion, harmful if swallowed, harmful in contact with skin, toxic if inhaled, causes skin irritation, may cause an allergic skin reaction, causes serious eye irritation
Precautionary Statements: Keep away from heat/sparks/open flames/hot surfaces, keep container tightly closed, wear protective gloves/protective clothing/eye protection/face protection, avoid breathing vapors or dust, use only outdoors or in a well-ventilated area
Route of Exposure: Skin, eyes, inhalation, ingestion
Potential Health Effects: Eye burns, skin burns, allergic reactions, gastrointestinal symptoms, respiratory tract irritation, potentially fatal if absorbed in large doses or not treated
NFPA Ratings: Health: 2, Flammability: 2, Reactivity: 4, Special Hazard: OX (oxidizer)
Tert-Butyl Peroxy-2-Ethylhexanoate: 32–52%, CAS 3006-82-4
Type B Diluent: 48% or more, proprietary blend (specific diluent chemical identities withheld by manufacturer, but usually consist of phthalate esters or organic hydrocarbons with low peroxide reactivity)
Other Impurities: Trace levels of by-products, stabilizers (<0.5% total), water (<1%)
Inhalation: Remove person to fresh air. Seek immediate medical attention if symptoms such as dizziness, nausea, coughing, or difficulty breathing develop. Oxygen or artificial respiration as needed by trained personnel.
Skin Contact: Immediately flush exposed skin for at least 15 minutes with running water while removing contaminated clothing and shoes. Get medical help if irritation or burns appear.
Eye Contact: Rinse thoroughly with water for at least 15 minutes, including under eyelids. Remove contact lenses if present. Urgent ophthalmological attention required.
Ingestion: Do not induce vomiting. Rinse mouth thoroughly with water if conscious. Never give anything by mouth to an unconscious person. Seek medical advice promptly.
Important Symptoms: Burning, redness, blistering, nausea, shortness of breath, headache, convulsions in severe cases.
Acute Symptoms: Corrosive burns, allergic reactions, possible systemic toxicity.
Notes for Doctor: Treat symptomatically. Peroxide exposure may cause delayed effects due to gradual absorption.
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide. Use large amounts of water to cool exposed containers from a safe distance.
Unsuitable Extinguishing Media: Do not use straight water streams or water jets.
Specific Hazards: Decomposes rapidly under heat or shock, releasing flammable and toxic vapors, mainly tert-butanol and oxides of carbon. Risk of violent explosion if confined.
Special Protective Equipment: Wear self-contained breathing apparatus and full-body flame-resistant suit.
Firefighting Instructions: Evacuate area, form exclusion zone. Approach fire from upwind. Cool exposed containers to prevent rupture. Use unmanned hose holders or monitor nozzles where possible.
Personal Precautions: Keep away from all sources of ignition. Only trained personnel equipped with proper protective gear should handle spills.
Protective Equipment: Chemical-resistant gloves, splash-proof goggles, flame-retardant coveralls, rubber boots, face shield.
Emergency Procedures: Ventilate area. Evacuate unprotected personnel. Avoid breathing fumes, dust, or vapor.
Containment: Dike spilled material to prevent spreading. Use inert absorbent material like vermiculite (not combustibles such as sawdust, paper towels, cloth).
Cleanup: Collect in non-sparking tools and place in explosion-proof, labeled containers for disposal. Wash spill area with large quantities of water after removal.
Environmental Precautions: Prevent entry into drains, sewers, or waterways due to potential aquatic toxicity and oxidation risk. Notify authorities if significant quantities are released.
Handling: Open containers in well-ventilated areas, away from sources of heat, sparks, and static electricity. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapors, or spray. Never return unused material to original container.
Storage: Store tightly closed in original containers, in designated cool, dry, well-ventilated, and fireproof areas, away from sunlight and incompatible materials (acids, alkalis, reducing agents, combustibles). Store under temperature control as recommended by supplier (typically below 30°C).
Incompatibility: Acids, alkalis, strong reducing agents, flammable materials, combustibles.
Other Precautions: Use explosion-proof electrical, ventilating, and lighting equipment. Ground containers when transferring product. Do not store in direct sunlight or in areas subject to excessive mechanical shock or vibration. Keep away from food, beverages, and animal feed.
Special Storage Requirements: Equipped with secondary containment, automatic fire suppression systems, and temperature monitoring.
Exposure Limits: No OSHA PEL or ACGIH TLV established for this compound; general organic peroxide limits apply (consult local regulations).
Engineering Controls: Use process enclosures, local exhaust ventilation, or other engineering controls to maintain airborne levels below recommended exposure limits. Areas should have chemical showers and eyewash stations readily accessible.
Personal Protective Equipment: Splash-proof chemical goggles or face shield, flame-resistant and chemical-resistant gloves (nitrile, neoprene), coveralls or lab coat, impervious footwear.
Respiratory Protection: Full-face respirator with organic vapor/acid gas cartridge for splash or spill situations; supplied-air respirator for higher concentrations.
Hygiene Measures: Wash exposed skin thoroughly after handling, before eating, smoking, or drinking. Remove contaminated clothing and launder before reuse.
Appearance: Clear to pale yellow liquid
Odor: Faint, slightly fruity
Odor Threshold: Not available
pH: Not applicable (non-aqueous peroxide)
Melting Point/Freezing Point: Below -20°C
Boiling Point/Range: Decomposes before boiling
Decomposition Temperature: Starts at 60-80°C
Flash Point: > 80°C (closed cup, dependent on diluent and concentration)
Evaporation Rate: Not determined
Flammability: Not classified as flammable but decomposes exothermically
Vapor Pressure: Low at room temperature
Vapor Density: >1 (air = 1)
Relative Density (Specific Gravity): 0.92 to 0.96 (water = 1)
Solubility: Insoluble in water, soluble in organic solvents (ethers, hydrocarbons)
Partition Coefficient n-octanol/water: Not determined
Viscosity: 6–10 mPa.s at 20°C
Explosive Properties: Organic peroxide, sensitive to heat, shock, and friction
Oxidizing Properties: Strong oxidizer
Molecular Weight: 244.35 g/mol (pure tert-butyl peroxy-2-ethylhexanoate)
Chemical Stability: Stable under recommended handling and storage conditions. Decomposes exothermically at elevated temperatures, especially above 60°C.
Possibility of Hazardous Reactions: Violent decomposition possible if contaminated, exposed to heat, shock, impact, or incompatible materials.
Conditions to Avoid: Heat, direct sunlight, flames, sparks, mechanical shock, physical damage, static discharge.
Incompatible Materials: Acids, alkalis, reducing agents, oxidizable organic materials, metals, accelerators, solvents not specified by supplier.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, tert-butanol, hydrocarbons, possible acetic acid and other low-boiling organics.
Polymerization: Will not polymerize but can initiate dangerous self-accelerating decomposition.
Acute Toxicity (Oral): LD50 (rat): 600–1,000 mg/kg (extrapolated)
Acute Toxicity (Dermal): LD50 (rat): >2,000 mg/kg (based on typical peroxide toxicity)
Acute Toxicity (Inhalation): LC50 (rat, 4h): Estimated 3–5 mg/L
Skin Irritation: Causes moderate to severe irritation, possible corrosive effects
Eye Irritation: Causes severe irritation and possible burns
Respiratory Sensitization: Not specifically tested, but repeated exposures can cause asthma-like reactions
Skin Sensitization: May cause allergic skin reactions
Chronic Effects: No reliable evidence for carcinogenicity, mutagenicity, or reproductive toxicity. Chronic exposures can aggravate dermatitis and asthmatic conditions
Target Organs: Eyes, skin, respiratory system
Symptoms: Redness, pain, blistering, coughing, difficulty breathing, headache, nausea
Other Effects: May depress the central nervous system at high concentrations
Ecotoxicity: Harmful to aquatic organisms, with potential for long-term adverse effects in the aquatic environment. Data for fish, daphnia, and algae is limited but similar peroxides have LC50 values in the range 1–100 mg/L.
Persistence and Degradability: Tends to degrade rapidly in the environment, primarily by hydrolysis and photolysis, but transformation products (alcohols, acids) may persist.
Bioaccumulative Potential: Low, based on molecular structure and water solubility, but main byproducts may enter food chain.
Mobility in Soil: Likely low adsorption to soil, high mobility in case of spills
Other Adverse Effects: Organic peroxide byproducts may reduce dissolved oxygen levels in water, affecting aquatic life. Avoid large uncontrolled discharges.
Disposal Methods: Controlled incineration or chemical treatment by licensed hazardous waste contractors. Do not dispose in regular trash, household drains, or municipal sewage. Material must be neutralized, diluted, or desensitized as advised by supplier before disposal.
Container Disposal: Empty containers may contain explosive residues. Triple rinse with compatible solvent under supervision, then send to authorized facility for decontamination or controlled crushing. Never weld or torch empty containers.
Precautions: All waste handling must prevent sources of ignition, heat, shock, and contamination. Follow federal, state, and local regulations for hazardous waste management.
RCRA Information: Meets criteria for hazardous waste under RCRA due to reactivity and oxidizing nature.
UN Number: 3107
UN Proper Shipping Name: Organic peroxide Type C, liquid, (contains tert-butyl peroxy-2-ethylhexanoate, not more than 52%, with diluent)
Transport Hazard Class: 5.2 (Organic Peroxides)
Packing Group: II
Labels: 5.2 Organic Peroxide
Special Precautions: Temperature-controlled shipment required. Ship in dedicated vehicles, away from food and incompatible materials.
Marine Pollutant: May be classified as marine pollutant as per IMDG Code
Emergency Response Guide (ERG): Guide 145 - Organic Peroxides (Temperature Controlled)
U.S. Regulations: Covered by OSHA Hazard Communication Standard, classified as hazardous chemical for workplace use. TSCA listed for industrial applications. SARA Title III Section 313 chemical, reportable above threshold quantities. RCRA hazardous waste number D003, D001.
EU Regulations: Regulated under CLP Regulation (EC) No 1272/2008, listed as hazardous substance, requires special labeling and safety procedures.
Other International: Registered and controlled across most countries under local chemical safety boards, such as REACH, GHS, and the Chinese Chemical Catalog. Subject to transport protocols for UN 3107, with maximum allowable transport temperatures enforced by international shipping codes.
Workplace Control: Requires safety training, written risk assessment, and documented exposure controls, per regulatory agency standards.
Community Right-to-Know: Bulk users required to inform local emergency planning committees if threshold planning quantities are stored or used onsite.
