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Product Name: 1-(2-Tert-Butylperoxyisopropyl)-3-Isopropenylbenzene
Synonyms: Peroxide initiator, TBPPIB
CAS Number: 26748-41-4
Recommended Use: Polymerization initiator and crosslinking agent in rubber and plastics industries
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Classification: Organic peroxide, solid, Type E; Skin irritant; Eye irritant; Acute toxic (oral)
Signal Word: Danger
Hazard Statements: Heating may cause a fire; Harmful if swallowed; Causes skin and serious eye irritation
Pictograms: Flame, Exclamation Mark
Precautionary Statements: Keep away from heat, sparks, open flames; Wear protective gloves and goggles; Avoid breathing dust and contact with skin or eyes
Target Organs: Skin, eyes, respiratory system
Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Other Hazards: Decomposition may release irritating or toxic gases; Dust can form explosive mixtures with air.
Chemical Name: 1-(2-Tert-Butylperoxyisopropyl)-3-Isopropenylbenzene
Concentration: ≤ 42%
CAS Number: 26748-41-4
Inert Solid Content: ≥ 58% (Precise composition proprietary, non-hazardous materials)
Impurities: No significant hazardous impurities identified
Additives: Anti-caking or stabilizers may be present (non-hazardous).
Inhalation: Move exposed individual to fresh air away from source. Seek medical attention for coughing, shortness of breath, or persistent irritation.
Skin Contact: Immediately remove contaminated clothing. Rinse skin thoroughly with soap and water for several minutes. Get medical help for redness, blistering, or persistent irritation.
Eye Contact: Hold eyelids open and rinse with water for at least 15 minutes. Remove contact lenses if present and easy to do. Get immediate medical help for pain, vision changes, or irritation.
Ingestion: Rinse mouth with water. Do not induce vomiting. Call poison control or doctor for advice. If unconscious or having trouble breathing, give medical attention urgently.
Note to physicians: Treat symptomatically. Monitor for respiratory distress and chemical exposure symptoms.
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide (CO2); do not use direct water jet, which may spread material.
Specific Hazards: Product decomposes under heat, releasing flammable and toxic vapors; may cause explosive reactions if not properly controlled.
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, acetic acid, various hydrocarbons, and organic acids.
Protective Equipment: Firefighters should use full self-contained breathing apparatus and chemical protective clothing.
Advice for Firefighters: Evacuate non-essential personnel, keep containers cool with water spray to prevent rupture, and approach fire from upwind.
Personal Precautions: Use appropriate personal protective equipment, including gloves, goggles, dust mask or respirator, and protective clothing. Keep people away from spill area.
Environmental Precautions: Prevent product from entering drains, surface water, or soil.
Methods for Cleaning Up: Gently sweep or shovel spilled material into clean, dry containers for disposal. Avoid creating airborne dust. Ventilate area. Wash contaminated surfaces with water after material removal. Dispose of according to regulations.
Spill Reporting: Notify authorities if spill enters environment or water systems, or exceeds regulatory thresholds.
Handling: Minimize dust generation. Avoid breathing dust or contact with skin and eyes. Wash hands thoroughly after handling. Use only with adequate ventilation. Keep away from ignition sources and incompatible materials such as acids, reducing agents, and alkalis.
Storage: Store in a cool, dry, well-ventilated area, away from sunlight and direct heat. Maintain container integrity—keep tightly closed and upright. Never store above recommended temperature (generally below 30 °C). Separate from food, feed, flammable, and oxidizing materials.
Special Considerations: Avoid contamination with other chemicals. Regularly inspect storage area for leaks or damage. Use original containers approved for peroxides.
Occupational Exposure Limits: No established limits for this substance; control measures focus on minimizing dust level in workplace.
Engineering Controls: Use local exhaust ventilation or general dilution ventilation to minimize exposure.
Personal Protective Equipment: Safety goggles, gloves (nitrile, neoprene), long-sleeved clothing, dust mask or approved respirator if ventilation is insufficient.
Hygiene Measures: Avoid eating, drinking, or smoking while using product. Wash hands and face before breaks and at end of work. Remove contaminated clothing and launder before reuse.
Environmental Exposure Controls: Prevent uncontrolled discharge into the environment.
Appearance: White to off-white solid (granules or powder)
Odor: Mild, faint aromatic or organic odor
Odor Threshold: Not determined
pH (in suspension): Not applicable (solid form)
Melting Point: Approximately 50-60 °C (with decomposition)
Boiling Point: Decomposes before boiling
Flash Point: Not applicable (decomposes on heating)
Evaporation Rate: Not applicable
Flammability: May support combustion under certain conditions; not highly flammable in bulk form
Vapor Pressure: Negligible at room temperature
Vapor Density: Not applicable
Relative Density: Approx. 1.1 - 1.3 g/cm³
Solubility: Low solubility in water; soluble in organic solvents
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not determined
Decomposition Temperature: Above 60°C
Viscosity: Not applicable
Chemical Stability: Product remains stable under recommended storage conditions. Hazard increases with temperature and presence of contaminants.
Reactivity: Reacts violently with strong acids, alkalis, reducing agents, and some metals.
Possibility of Hazardous Reactions: Self-accelerating decomposition possible at elevated temperatures or if contaminated.
Conditions to Avoid: Heating above recommended temperature, open flames, shock, friction, and incompatible materials.
Incompatible Materials: Strong acids, bases, reducing agents, organic materials, and certain metals.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, organic acids, and other toxic or irritating fumes.
Acute Toxicity: Harmful if swallowed (oral LD50 estimate: 300–2000 mg/kg, rat). Inhalation of dust may irritate respiratory tract.
Skin Corrosion/Irritation: Causes skin irritation. Prolonged or repeated contact may cause dermatitis.
Serious Eye Damage/Irritation: Causes severe eye irritation; possible damage with direct exposure.
Respiratory Sensitization: May cause irritation, coughing, difficulty breathing in high dust levels.
Skin Sensitization: Not established, but skin irritation can worsen with exposure.
Chronic Toxicity: No evidence of specific chronic health risks in available literature for given concentrations.
Carcinogenicity: Not classified as carcinogen by IARC, NTP, or OSHA.
Mutagenicity: No evidence in current studies.
Reproductive Toxicity: No evidence based on current data.
Target Organ Effects: Eyes, skin, and respiratory tract.
Ecotoxicity: Product may be toxic to aquatic organisms at high concentrations; avoid release to surface waters.
Persistence and Degradability: Organic peroxide structure suggests moderate persistence; breakdown products may not be readily biodegradable.
Bioaccumulative Potential: Not expected to bioaccumulate significantly in aquatic species.
Mobility in Soil: Low mobility in solid form; breakdown products may migrate in water or soil.
Other Adverse Effects: Decomposition may generate substances harmful to water quality and aquatic life.
Waste Disposal Methods: Dispose of through licensed hazardous waste contractor. Incineration is recommended under controlled conditions. Do not mix with general refuse.
Container Disposal: Containers must be completely empty and rinsed, then disposed according to local environmental regulations.
Disposal Restrictions: Do not allow product or residue to reach waterways, sewers, or environment.
Contaminated Packaging: Treat as hazardous material. Clean and recycle when possible, or dispose as per local authority guidelines.
UN Number: UN 3106
Proper Shipping Name: Organic Peroxide type E, solid (1-(2-Tert-Butylperoxyisopropyl)-3-Isopropenylbenzene mixture)
Transport Hazard Class: 5.2, Organic peroxides
Packing Group: II
Labels: 5.2 (Organic Peroxide)
Marine Pollutant: Not specifically designated, but avoid transport near waterways
Special Precautions: Keep away from sources of heat and direct sunlight. Handle shipments with trained personnel familiar with organic peroxide hazards.
Regulatory Codes: Ensure compliance with ADR/RID, IMDG, ICAO/IATA transport regulations
Global Inventory Status: Listed or covered by chemical inventories (e.g., TSCA, REACH, DSL, ENCS)
EU Classification: Organic peroxide, irritant
OSHA Classification (USA): Hazardous chemical as defined by OSHA Hazard Communication Standard
SARA Title III (Section 302/313): Not listed as an extremely hazardous substance; check local and state requirements
WHMIS (Canada): Organic Peroxides, Other Toxic Effects
Control Laws: Subject to workplace safety, environmental/emergency reporting under regional and national laws
Label Requirements: Proper chemical labeling including hazard statements and manufacturer details
