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Product Name: Tert-Butyl Peroxypivalate Stable Dispersion in Frozen Water
Chemical Family: Organic Peroxide
Synonyms: Perpivalic acid, tert-butyl ester peroxide
CAS Number: 614-45-9
Supplier Information: Manufacturer and distributor names, addresses, emergency contact phone numbers
Recommended Use: Polymerization initiator, specialty chemical synthesis
Restrictions on Use: Use in controlled, industrial facilities by trained professionals only
GHS Classification: Organic peroxide Type D, Acute Toxicity Category 4, Skin Irritation Category 2, Eye Irritation Category 2A, Aquatic Acute Category 1
Signal Word: Danger
Hazard Pictograms: Flame, Exclamation Mark, Environment
Hazard Statements: Heating may cause a fire or explosion, harmful if swallowed, causes skin irritation, causes serious eye irritation, very toxic to aquatic life
Precautionary Statements: Store below 0°C, avoid release to the environment, wear protective gloves, protective clothing, eye protection, wash hands thoroughly after handling, in case of fire use water spray to cool unopened containers
Other Hazards: Strong oxidizer, may form explosive mixtures with combustible materials, may cause physical injury from violent decomposition if not handled safely
Chemical Name: Tert-Butyl Peroxypivalate
Concentration: ≤42%
CAS Number: 614-45-9
Other Ingredients: Water (≥58%), proprietary stabilizers, trace inorganic salts
Impurities: No relevant hazardous impurities expected at this concentration
Ingredient Notes: Formulated to stay stable at frozen temperatures for transport and storage, breaks down when warmed and exposed to air and light
Inhalation: Move affected person to fresh air, keep warm and quiet, seek immediate medical attention for breathing difficulty or irritation symptoms
Skin Contact: Rinse skin immediately with plenty of water for at least 15 minutes, take off contaminated clothing and wash before reuse, seek medical attention for persistent irritation or burns
Eye Contact: Hold eyelids open and rinse eyes with water for several minutes, remove contact lenses if present and easy, do not rub eyes, obtain prompt medical assistance
Ingestion: Rinse mouth thoroughly, do not induce vomiting, never give anything by mouth to an unconscious person, seek medical care without delay
Most Important Symptoms/Effects: Irritation to respiratory system, skin, eyes, possible allergic reaction, risk of delayed effects from swallowing or chronic skin contact
Suitable Extinguishing Media: Large amounts of water, water spray, do not use dry chemical or foam (may accelerate decomposition)
Unsuitable Extinguishing Media: CO2, dry chemicals, halogenated extinguishing agents
Special Hazards: Severe fire and explosion risk on heating or contamination, decomposition releases toxic vapors (CO, CO2, acidic gases)
Protective Equipment: Full protective clothing with self-contained breathing apparatus, keep upwind
Firefighting Procedures: Cool fire-exposed containers with water from a safe distance, evacuate nearby area, do not approach containers involved in fire
Personal Precautions: Wear chemical-resistant gloves, splash goggles, face protection, body covering, ensure good ventilation, remove ignition sources
Environmental Precautions: Prevent entry into drains or surface water, notify local authorities on significant spillage
Containment: Dam area with inert absorbent, use plastic equipment where possible to reduce friction and static
Clean-up Methods: Collect spilled material with non-sparking tools into polyethylene or polypropylene containers, flush contaminated area with copious water once product removed
Disposal of Contaminated Material: Dispose according to hazardous waste regulations, do not mix with combustibles or organic materials
Precautions for Safe Handling: Handle only in cold, well-ventilated locations, minimize friction, impact, and sources of ignition, use only non-sparking tools, avoid direct contact
Storage Conditions: Store at or below -18°C in tightly closed original container, keep apart from incompatible materials (acids, bases, reducing agents)
Technical Measures: Temperature-controlled areas, clear signage, anti-static devices, keep away from sunlight
Incompatible Materials: Strong acids, alkalis, amines, reducing agents, combustibles, heavy metals
Storage Class: Organic Peroxides, separated from food and feed, oxides, bases, and flammable materials
Exposure Limit Values: No occupational exposure limits established, minimize dust and vapor formation
Engineering Controls: Use only in well-ventilated areas, provide eyewash stations, safety showers near points of use
Personal Protective Equipment: Nitrile or neoprene gloves, chemical splash goggles, face shield, long-sleeved clothing and apron, in case of high risk wear full-body chemical protective suit
Respiratory Protection: Use NIOSH-approved organic vapor respirator if ventilation is insufficient
Hygiene Measures: Wash hands after handling, launder protective clothing regularly, avoid eating, drinking, or smoking in work area, keep away from bare skin and eyes
Appearance: White to off-white frozen slurry or solid
Odor: Slight, characteristic peroxide odor
Odor Threshold: Not established
pH: Slightly acidic to neutral
Melting/Freezing Point: Below 0°C (stable as frozen material)
Boiling Point/Range: Decomposes before boiling
Flash Point: Not applicable (decomposes)
Evaporation Rate: Not established
Flammability: Organic peroxide – strong oxidizer, may detonate if shock or heated
Explosion Limits: Not established
Vapor Pressure: Low at recommended storage temperature
Vapor Density: Not available
Density: Approximately 1.08 g/cm3 (dispersion)
Solubility: Insoluble in water, disperses in water matrix
Partition Coefficient (n-octanol/water): Not established
Autoignition Temperature: Not determined (decomposes violently well below typical ignition temperatures)
Decomposition Temperature: Begins to decompose above -10°C, risk of detonation above 0°C
Viscosity: Not established (frozen matrix)
Chemical Stability: Stable at recommended storage conditions below -18°C, unstable at higher temperatures
Dangerous Reactions: Rapid decomposition and possible explosion if heated, contaminated, or subjected to shock
Conditions to Avoid: Elevated temperatures, direct sunlight, friction, static discharge, shock, contamination
Incompatible Materials: Strong acids and bases, metal salts, reducing agents, combustibles
Decomposition Products: Carbon monoxide, carbon dioxide, aliphatic acids, water vapor, irritating organic fumes
Polymerization: Does not self-polymerize, rapid decomposition risk replaces this hazard
Acute Toxicity: Harmful if swallowed (oral rat LD50 approximately 2,000 mg/kg for active component)
Skin Corrosion/Irritation: Causes moderate redness and swelling, risk of burns on repeated contact
Serious Eye Damage/Irritation: Causes conjunctival redness, possible corneal injury
Respiratory or Skin Sensitization: Not expected to sensitize, but repeated exposure may cause allergic-type responses
Chronic Toxicity: No confirmed long-term effects reported for typical workplace exposures
Specific Target Organ Toxicity: Not established, avoid all unnecessary exposure
Carcinogenicity/Mutagenicity: Not classified as known or suspected human carcinogen
Other Health Effects: May aggravate pre-existing asthmatic or skin conditions, large spills or fires can lead to serious systemic toxicity and oxygen-starved environments
Ecotoxicity: Very toxic to aquatic organisms (LC50 for fish and invertebrates under 1 mg/L)
Persistence and Degradability: Peroxide breaks down rapidly in water and sunlight, not persistent
Bioaccumulative Potential: Low, does not accumulate in aquatic organisms
Mobility in Soil: Will degrade quickly if release to soil occurs, but acute risk for any aquatic run-off
Other Adverse Effects: Short-term contamination of waterways will kill fish and invertebrates, longer-term persistence unlikely
Avoidance Measures: Use secure containers, diligence in handling to prevent entry into drains and waterways
Waste Treatment Methods: Dispose through licensed hazardous waste contractor, prefer controlled chemical destruction
Disposal of Contaminated Packaging: Do not reuse containers, rinse with water and treat rinsate as hazardous waste
Environmental Hazards: Never dump in environment or municipal drains
Special Precautions: Avoid heat, shock, and contamination during all disposal steps
Guidance: Consider local, regional, and national disposal regulations, coordinate with environmental health and safety staff
UN Number: UN 3114
Proper Shipping Name: Organic Peroxide Type D, Liquid (Tert-Butyl Peroxypivalate, ≤42% dispersion in frozen water), temperature controlled
Transport Hazard Class: 5.2 (Organic peroxide, temperature controlled)
Packing Group: II
Marine Pollutant: Yes
Special Precautions for Transport: Owning to sensitivity to heat and shock, use temperature-controlled vehicles, maintain frozen condition, do not stack packages
Emergency Guide Number: ERG 145
Label Requirements: Organic peroxide, Marine pollutant, Keep Frozen/Temperature Controlled
OSHA: Covered under Hazard Communication Standard as hazardous chemical
EPA: RCRA hazardous waste if discarded
TSCA: Listed
EU REACH: Registered substance in relevant concentrations
Canada WHMIS: Class B (oxidizing materials), Class D (acute toxicant)
International Inventory Status: Listed on relevant chemical inventories for shipment and use
Other Regulations: Subject to strict storage, handling, and emergency planning requirements according to local environmental, safety, and health laws
