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Product Name: Tert-Butyl Peroxypivalate
Chemical Formula: C9H18O4
CAS Number: 614-45-9
Recommended Use: Initiator in polymerization processes, especially in plastics and resins manufacturing.
Manufacturer Contact: Emergency telephone numbers provided by the supplier or local distributor.
Synonyms: Peroxypivalic acid, tert-butyl ester; TBPP; Tert-butylperoxypivalate
Classification: Organic peroxide, Type D; Acute toxicity (oral, dermal, inhalation); Eye irritation; Skin irritation;
GHS Label Elements: Pictograms: Flame over circle, Exclamation mark, Skull and crossbones
Signal Word: Danger
Hazard Statements: May cause fire or explosion; strong oxidizer. Toxic if swallowed or in contact with skin. Causes severe skin burns and eye damage. May cause respiratory irritation.
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective gloves, clothing, and eye/face protection. Keep container tightly closed.
Substance: Tert-Butyl Peroxypivalate
Concentration: 77 – 100% by weight
Impurities: Not expected to contain significant other hazardous materials.
Inhalation: Remove person to fresh air. Seek immediate medical attention if symptoms persist. If not breathing, give artificial respiration.
Skin Contact: Remove contaminated clothing. Rinse skin with water for at least 15 minutes. Seek immediate medical attention for burns.
Eye Contact: Rinse eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids. Seek prompt medical evaluation.
Ingestion: Do not induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth and get medical attention.
Suitable Extinguishing Media: Use large amounts of water to cool containers; use foam for large fires. Avoid dry chemical and carbon dioxide on large fires.
Specific Hazards: Decomposes to release flammable gases. Combustion may produce toxic vapors and irritants.
Protective Gear: Firefighters should use self-contained breathing apparatus and full protective suits.
Special Precautions: Move containers away from fire area if safe. Water spray helps prevent re-ignition.
Personal Precautions: Evacuate area, keep away sources of ignition. Ventilate area. Wear full protective clothing, including gloves and goggles.
Environmental Precautions: Prevent runoff into drains and sewers. Notify appropriate authorities if large spills occur.
Cleanup Methods: Absorb with inert material like vermiculite or sand. Keep in suitable container away from combustibles for disposal. Decontaminate area with suitable cleaners (dilute bleach solution).
Handling: Avoid contact with skin, eyes, and clothing. Do not breathe vapors or mists. Use only in well-ventilated areas. Ground and bond containers during transfer.
Storage: Keep containers sealed and out of direct sunlight. Store in a cool, dry, well-ventilated place, separated from incompatible materials (acids, bases, reducing agents, combustibles). Temperature control is essential to prevent self-accelerating decomposition.
Other Guidance: Use explosion-proof equipment, keep storage limited to minimum needed for immediate use.
Exposure Limits: No specific occupational exposure limit set; minimize exposure.
Engineering Controls: Keep workplace well ventilated, use local exhaust if available. Automatic alarm systems recommended for leak detection.
Personal Protection: Wear chemical-resistant gloves, impervious clothing, safety goggles, and face shield. Use NIOSH-approved respirator if there is risk of inhalation exposure.
Hygiene Measures: Wash hands and face after handling, do not eat or drink in work area.
Appearance: Colorless to pale yellow liquid
Odor: Faint, sweet, ester-like
Odor Threshold: Not established
Boiling Point: Decomposes before boiling
Melting Point: Not established
Decomposition Temperature: Range typically 40–60°C (104–140°F); exothermic breakdown can occur.
Vapor Pressure: Moderate at ambient temperature
Solubility: Insoluble in water; miscible with organic solvents
Density: Approximately 0.94 g/cm³
Flash Point: Below ambient temperature; may ignite spontaneously
Auto-ignition: Not established, risk occurs with contamination or heating
Chemical Stability: Unstable at high temperatures and under direct sunlight. Sensitive to shock, friction, or contamination.
Hazardous Reactions: Vigorous reaction with reducing agents, acids, metals, or strong bases. Can cause fire or explosion.
Decomposition Products: Carbon oxides, hydrocarbons, and potentially unknown toxic gases may form.
Conditions to Avoid: Heat, sparks, static discharge, mechanical impact, and contamination by incompatible substances.
Acute Effects: Toxic by ingestion, inhalation, skin, or eye contact. May cause burns, respiratory distress, dizziness, headache.
Chronic Effects: Repeated exposure may damage liver, kidneys, and central nervous system.
Sensitization: Skin and respiratory system sensitizer reported in animal studies.
Carcinogenicity: Not listed as a carcinogen by IARC, NTP, or OSHA; data limited.
Mutagenicity: Insufficient evidence in available literature.
Routes of Exposure: Primarily inhalation, dermal absorption, accidental ingestion.
Ecotoxicity: Harmful to aquatic life with long lasting effects. Fish, algae, and invertebrates show sensitivity at low concentrations.
Persistence and Degradability: Likely to degrade in the environment, but breakdown may release toxic byproducts.
Bioaccumulative Potential: Potential for bioaccumulation is considered low, though data is limited.
Mobility in Soil: Low water solubility reduces migration; most likely to bind to soils and sediment.
Other Adverse Effects: Release into environment should be avoided to prevent impact on local ecosystems.
Disposal Methods: Treat as hazardous chemical waste. Incinerate at high temperature in approved facility with trained personnel. Do not dispose of in general waste streams.
Contaminated Packaging: Dispose of empty containers as hazardous waste. Triple rinse and follow federal, state, or local regulations.
Precautions: Do not allow material to enter waterways or soil.
UN Number: UN 3105
UN Proper Shipping Name: Organic Peroxide Type D, Liquid (Tert-Butyl Peroxypivalate, ≥77%)
Transport Hazard Class: 5.2 (Organic Peroxide)
Packing Group: II (substances presenting medium danger)
Label Requirement: Oxidizer (flame over circle pictogram), keep intact and cool during transit.
Special Precautions: Do not transport with easily oxidizable or combustible materials. Emergency response guide is required in shipping vehicle.
US Federal Regulations: OSHA hazardous chemical; SARA Title III Section 313: Not listed; TSCA Inventory: Listed.
EU Regulations: Classified under CLP Regulation (EC) No 1272/2008. Requires hazard labeling and strict handling provisions.
Other Regulations: Subject to strict reporting and storage rules. Dispose in accordance with local, national, and international regulations.
Workplace Requirements: Written exposure control plans, worker training, emergency planning, and chemical inventory management expected by regulatory agencies.
