MSDS for Tert-Butyl Peroxy-2-Ethylhexylcarbonate Enox TBEC

Identification

Product Name: Tert-Butyl Peroxy-2-Ethylhexylcarbonate
Common Names: Enox TBEC, Peroxide TBEC
CAS Number: 34443-12-4
Recommended Use: Polymerization initiator, cross-linking agent
Supplier Contact: Emergency phone numbers and business contact details of the manufacturer or distributor
Emergency Contact: CHEMTREC 24-hour Emergency Response, phone number included here
UN Number: 3119
Synonyms: Tert-butyl 2-ethylhexyl peroxycarbonate
Other Identifiers: Luperox 554M, Trigonox C, Perkadox 16

Hazard Identification

GHS Classification: Organic Peroxide Type D, Acute Toxicity Oral Category 4, Skin Corrosion/Irritation Category 2, Serious Eye Damage/Eye Irritation Category 2A
Signal Word: Danger
Hazard Statements: Heating may cause fire or explosion, Harmful if swallowed, Causes skin irritation, Causes serious eye irritation
Pictograms: Flame over circle, Exclamation mark
Precautionary Statements: Avoid heat, sparks, open flames, hot surfaces; Wash skin thoroughly after handling; Wear protective gloves, clothing, eye, face protection; Do not eat, drink, or smoke when using this substance
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Other Hazards: Decomposition may release irritating and toxic fumes (carbon oxides)

Composition / Information on Ingredients

Substance: Tert-Butyl Peroxy-2-Ethylhexylcarbonate
Chemical Formula: C12H24O4
Content: ≥ 96% by weight
Impurities: May contain stabilizers, water content < 0.5%, traces of other peroxides
Additives: May include diluents or phlegmatizers (typically mineral oil or similar)

First Aid Measures

Inhalation: Remove victim to fresh air, provide artificial respiration if breathing has stopped, seek medical attention immediately
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water for at least 15 minutes, seek medical advice if symptoms persist
Eye Contact: Rinse cautiously with plenty of water for not less than 15 minutes, hold eyelids apart, remove contact lenses if present and continue rinsing, seek urgent medical attention
Ingestion: Do not induce vomiting, rinse mouth, drink water if conscious, get immediate medical help
Symptoms: Burning sensation, irritation, redness, possible delayed effects including chemical burns or respiratory distress
Advice for Medical Responders: Assess airway, breathing, and circulation, provide symptomatic treatment, monitor for signs of systemic toxicity and organ damage

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry powder, foam, do not use carbon dioxide on decomposing peroxides
Unsuitable Media: Carbon dioxide extinguishers, sand may not be effective for controlling peroxide fires
Specific Hazards: Decomposes under heat releasing flammable gases, risk of explosion, run-off may contaminate water sources
Decomposition Products: Carbon oxides (CO, CO2), possibly toxic vapors
Personal Protective Equipment: Firefighters wear positive pressure self-contained breathing apparatus (SCBA), full chemical-resistant suit
Special Precautions: Approach fire from upwind, cool containers with water spray, evacuate area quickly if large amounts involved

Accidental Release Measures

Personal Precautions: Evacuate unprotected personnel, ventilate area, avoid inhalation and contact with eyes and skin, wear chemical-resistant gloves, goggles, and respirator suitable for organic vapors
Environmental Precautions: Prevent entry into sewers, surface water, groundwater; notify authorities if large spills threaten waterways
Containment: Absorb spill with inert material (vermiculite, sand), do not use combustible materials (e.g., sawdust), collect spillage in containers for proper disposal
Clean-Up Procedures: Use non-sparking tools, store contaminated materials in secure, labelled waste drums, decontaminate spill site after collection
Other Considerations: Remove all sources of ignition from immediate area, ventilate thoroughly, avoid using metal containers where possible due to peroxide sensitivity

Handling and Storage

Handling: Use only with adequate ventilation, keep away from heat, sparks, open flames, take precautions against static discharge, use grounding and bonding if transferring large volumes, avoid contact with incompatible materials such as strong acids, bases, oxidizers, and combustibles, avoid rough handling and shock
Storage: Store in original, tightly closed containers, keep in a cool, dry, well-ventilated place, temperature maintained below 30°C, protect from sunlight and moisture, segregate from foodstuffs and incompatible chemicals, never return unused product to the storage container, keep air space above liquid in container minimal to prevent decomposition
Other Measures: Install leak detection and temperature control systems for bulk storage, label all good clearly with hazard warnings and storage date, train personnel on risks and emergency procedures related to organic peroxides

Exposure Controls and Personal Protection

Recommended Exposure Limits: No established OSHA PEL or ACGIH TLV for this compound, use general organic peroxide guidelines
Engineering Controls: Local exhaust ventilation, eye wash stations, emergency showers
Personal Protective Equipment for Workers: Chemical-resistant gloves (nitrile, butyl), flame-retardant lab coat, splash goggles, face shield, respirator with organic vapor cartridge if ventilation inadequate
Controls During Maintenance or Emergency: Use full chemical suit and self-contained breathing apparatus in cases of large-scale or uncontrolled releases
Hygiene Measures: Wash hands and face thoroughly after handling, do not eat or drink in work areas, remove contaminated clothing promptly

Physical and Chemical Properties

Appearance: Colorless to pale yellow liquid
Odor: Mild, ester-like odor
Melting Point/Freezing Point: -15°C to -10°C
Boiling Point/Range: Decomposes before boiling (not discernible boiling point)
Flash Point: Approximately 60°C closed cup
Auto-Ignition Temperature: Data not fully established; decompose exothermically above 80°C
Flammability: Not classed as flammable but supports combustion
Decomposition Temperature: Begins above 60°C, vigorous from 80°C
Vapor Pressure: 2 mmHg at 25°C (varies with temperature)
Density: 0.93 g/cm³ at 20°C
Solubility: Slightly soluble in water, soluble in most organic solvents (e.g., alcohol, acetone, benzene)
Viscosity: Moderate, not fully quantified
Explosion Limits: Not determined, but initiate rapid decomposition if heated or contaminated
Partition Coefficient (n-octanol/water): Not established

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions, decomposes slowly at higher temperatures or in presence of incompatibles
Conditions to Avoid: Heat, direct sunlight, physical shock, contamination with heavy metals, reducing agents, strong acids, alkalis
Incompatible Materials: Metal powders, sulfur, strong oxidizing or reducing agents, acids, bases, amines, combustible material
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, possibly volatile organic acids, flammable gases
Hazardous Reactions: Risk of violent decomposition, may explode under confinement and heating, avoid friction, grinding, mixing with other chemicals unless compatibility is certain

Toxicological Information

Acute Toxicity: Harmful if swallowed, limited animal data (LD50 oral rat around 2000 mg/kg), may cause severe health effects in high exposures
Skin Corrosivity: Causes skin irritation, may cause redness, blistering on prolonged exposure
Serious Eye Damage/Irritation: Causes severe eye irritation, possible chemical burns, potential for permanent injury
Respiratory/Mucous Membrane Effects: Inhalation of vapors or aerosols may cause respiratory tract irritation, coughing, shortness of breath
Allergic Sensitization: No data indicating sensitization in humans or animals
Chronic Toxicity: No long-term epidemiological studies on cancer, reproductive hazard not established for TBEC, avoid chronic exposure due to general peroxide toxicity profile
Other Health Effects: Systemic absorption may result in central nervous system depression, possible organ toxicity in overdose

Ecological Information

Aquatic Toxicity: Not fully tested, organic peroxides can present moderate hazard to aquatic life, estimated EC50 (fish, daphnia) > 10 mg/L
Biodegradability: Likely to undergo slow hydrolysis/decomposition in the environment; breaks down to CO2, low bioaccumulation potential
Persistence and Degradability: Expected to degrade within weeks under aerobic conditions
Mobility in Soil: Moderate mobility, may partition into water phase, unlikely to volatilize
Other Adverse Effects: Possible toxic effects on marine organisms and plants, run-off or spillage may disrupt wastewater treatment
Bioaccumulative Potential: Unknown, related compounds show low bioaccumulation

Disposal Considerations

Waste Treatment Methods: Incineration at approved facility is preferred, do not discharge into drains or environment
Disposal of Product: Consult local, regional, and national regulations for organic peroxide disposal, use certified chemical disposal company for large quantities
Disposal of Packaging: Triple rinse empty containers, puncture or crush and dispose as hazardous waste in accordance with regulations
Precautions: Never mix with incompatible waste streams, avoid excessive heat or contamination during disposal
Spill Disposal: Treat spill cleanup material as hazardous waste, keep away from combustible materials

Transport Information

UN Number: 3119
UN Proper Shipping Name: Organic Peroxide Type D, Liquid (containing not more than 72% peroxide)
Transport Hazard Class: 5.2 (Organic peroxides)
Packing Group: II
Labels Required: Organic peroxide, Marine pollutant (as required)
Special Provisions: Protect from physical damage, temperature constraints during transport, emergency temperature monitoring for large shipments
DOT (US): Regulated as hazardous material; special documentation and declarations required
IMDG, ICAO/IATA: Subject to strict hazardous materials shipping rules, no transport by air for bulk quantities above thresholds

Regulatory Information

OSHA: Classified hazardous under OSHA Hazard Communication Standard
TSCA: Listed (United States Toxic Substances Control Act)
CEPA (Canada): DSL/NDSL listed
REACH (EU): Registered substance, subject to restrictions for storage and handling
EINECS/ELINCS (EU): Listed
Right-to-Know Listings: Present on state lists such as Massachusetts, New Jersey, Pennsylvania
International Inventories: Australia AICS, Japan ENCS, China IECES
Special Regulations: Subject to Seveso Directive (EU) for major accident hazards, reporting required for significant storage