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Product Name: 1,1,3,3-Tetramethylbutyl Peroxypivalate, Stable Dispersion in Water, Content ≤ 52%
Chemical Family: Organic Peroxide
Synonyms: Peroxypivalic Acid, 2,2,4,4-Tetramethyl-3-oxopentane Peroxide
Chemical Formula: C12H24O4
CAS Number: 56130-58-0
Intended Use: Used mainly in polymerization processes as an initiator for polymers and plastics
Manufacturer Contact: Emergency phone number and address listed on product label for transport and first aid emergencies
GHS Classification: Organic Peroxide Type D, Acute Toxicity Category 4, Skin Irritation Category 2, Eye Irritation Category 2A, Specific Target Organ Toxicity Single Exposure Category 3
Signal Word: Danger
Hazard Statements: Heating may cause fire; harmful if inhaled, swallowed, or in contact with the skin; causes skin and eye irritation; may cause respiratory irritation
Precautionary Statements: Keep away from heat, sparks, open flames; wear protective gloves and eye protection; use only outdoors or in well-ventilated areas; avoid breathing vapors or mist
Main Component: 1,1,3,3-Tetramethylbutyl Peroxypivalate (≤52%)
Stabilizer: Water, proprietary dispersing agents (balance)
Impurities: Trace levels of byproducts from manufacturing; no known significant impurities posing extra hazard beyond stated risks
Inhalation: Move person to fresh air; keep comfortable for breathing; call a Poison Center or physician if symptoms persist
Skin contact: Wash with plenty of soap and water immediately; remove contaminated clothing and shoes; get medical advice if irritation or rash appears
Eye contact: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing; seek medical attention promptly
Ingestion: Rinse mouth; do not induce vomiting without medical advice; seek immediate medical help
Symptoms: Headache, dizziness, nausea, cough, redness, irritation, or burning sensation in eyes or on skin
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide for small fires; large fire may need firefighting foam and water spray
Specific Hazards: Decomposes rapidly under heat, releasing vapors that may catch fire easily; may produce irritating or toxic fumes—carbon monoxide, carbon dioxide, organic acids
Advice for Firefighters: Wear self-contained breathing apparatus, full protective gear; cool containers at risk with water spray; avoid breathing combustion gases
Special Precautions: Remove exposed containers if safe to do so; contaminated water from firefighting run-off may pose environmental risk; control run-off as best as possible
Personal Precautions: Evacuate unprotected personnel, ventilate area, avoid inhaling vapor or mist, restrict ignition sources
Environmental Precautions: Prevent entry into sewers, waterways, and soil—notify authorities of large spills
Clean-Up Methods: Absorb spillage with inert material like sand or earth; collect in labeled, sealed container for proper disposal according to regulations; use non-sparking tools, handle only with personnel in appropriate PPE; dispose of wastes quickly to avoid hazard escalation
Safe Handling: Work in areas with strong ventilation, keep product in original tightly closed container; avoid shock, friction, and sources of static or spark; never return unused material to original container
Safe Storage: Store locked up in cool (below 30°C), dry, well-ventilated area; separate from incompatible substances like reducing agents, acids, alkali, and heavy metals; keep away from food, feed, and drinking water; containers should stay upright and properly labeled
Special Storage Instructions: Use only approved containers, inspect storage often for leaks or bulging; segregate from organic materials and flammable substances
Exposure Limits: No established OSHA or ACGIH exposure limits; minimize exposure based on product hazard
Engineering Controls: Handle in fume hood or with local exhaust ventilation directly above process site; emergency eye wash and safety shower should be accessible
Personal Protective Equipment (PPE): Chemical-resistant gloves (such as nitrile), splash-proof goggles, face shield for volumes over 100mL, flame-retardant lab coat, chemical-resistant apron; use respiratory protection if vapors exceed safe levels, usually determined by personal monitoring
Hygiene Measures: Wash hands after handling; remove contaminated clothing before work breaks or leaving work area
Physical State: Milky white liquid (stable aqueous dispersion)
Odor: Slight, sweet, pungent
Odor Threshold: Not established
pH: 3.5–6.5 (10% solution in water)
Melting Point/Range: Below 0°C for the dispersion
Boiling Point: Water boils at 100°C, decomposes before boiling
Flash Point: Not determined for aqueous dispersion, active substance below 70°C
Decomposition Temperature: Begins above 50°C (accelerating above 60°C)
Vapor Pressure: Low at ambient temperature
Solubility in Water: Complete (as dispersion); active ingredient is poorly soluble
Density: About 1.05–1.15 g/cm³ (at 20°C)
Viscosity: Approximately 100–200 mPa·s (at 20°C)
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Data not available for mixture
Explosive Properties: Organic peroxides can evolve gas rapidly; treat as potentially explosive under heat and confinement
Oxidizing Properties: Strong oxidizer
Chemical Stability: Unstable at high temperatures, more stable at low temperatures in water dispersion
Reactivity: Reacts exothermically with reducing agents, acids, bases, heavy metals, amines, easily oxidizable substances
Hazardous Reactions: Rapid decomposition under heat, pressure, or contamination could lead to violent release of gases and combustion
Conditions to Avoid: Heat, sunlight, mechanical shock, contamination with incompatible substances
Incompatible Materials: Reducing agents, strong acids, alkalis, amines, metallic compounds
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, various volatile organic fragments
Acute Toxicity: Estimates for oral and dermal routes in rats suggest LD50 between 300–2000 mg/kg
Inhalation: Exposure causes coughing, headache, dizziness, and possible respiratory irritation; may aggravate existing lung conditions
Skin: Contact causes irritation, redness, possible blistering on prolonged or repeated exposure
Eye: Irritating, produces pain, redness, tearing, and blurred vision
Chronic/Long-Term Effects: Prolonged or repeated exposure may cause dermatitis and respiratory sensitization; not identified as mutagenic, carcinogenic, or teratogenic by IARC, NTP, or OSHA
Other Symptoms: Sensitization possible by skin contact; ingestion causes pain, nausea, vomiting
Ecotoxicity: Harmful to aquatic life; fish LC50 estimated at 1–10 mg/L; algae and daphnia also sensitive at low concentrations
Mobility in Soil: Mobile in water, active ingredient less mobile due to low solubility
Persistence and Degradability: Hydrolyzes and degrades relatively rapidly in water and soil; breakdown leads to low persistent residues
Bioaccumulation Potential: Low to moderate, since the active substance can partition into organisms but does not persist in tissues
Other Adverse Effects: Prevent uncontrolled discharges due to toxic breakdown products and oxygen-depleting potential
Waste Handling: Dispose of in accordance with local, national, and international regulations; avoid landfill or drain disposal
Processing: Incinerate at approved facility with scrubber and afterburner, or apply chemical neutralization routes only by specialists
Packaging Disposal: Rinse containers three times before disposal; send to authorized drum reconditioner or incinerator
Recommendations: Unused product should be returned to supplier for recycling or hazardous waste disposal; never mix with other waste streams
UN Number: UN 3109
Proper Shipping Name: Organic Peroxide Type D, Liquid (1,1,3,3-Tetramethylbutyl Peroxypivalate, ≤52%)
Hazard Class: 5.2 Organic Peroxide
Packing Group: II (medium danger)
Labels: 5.2 (yellow flame symbol), Environmental hazard where applicable
Special Provisions: Must stay cool during transit; keep upright at all times; dedicated vehicle or compartment preferred; forbidden on passenger aircraft; emergency response guide must accompany vehicle
Environmental Hazards: Marked as dangerous to aquatic life for some jurisdictions
Chemical Inventory Status: Listed in TSCA (USA), REACH (EU), DSL (Canada); registration or notification may apply by region
OSHA Hazard Categories: Immediate Health, Delayed Health, Fire Hazard, Reactive
SARA Title III: Not specifically listed under Sections 302 or 304; check Section 313 for reporting requirements
EU Classification: Oxidizing, Irritant, Dangerous for Environment; labeled under CLP Regulation (EC) No 1272/2008
Other Regulatory Lists: Consult country-specific requirements for storage, transport, and disposal; varies by environmental rules and emergency planning
