Product Name: Di-Tert-Pentyl Peroxide
Chemical Formula: C10H22O2
Other Names: Peroxide, bis(1,1-dimethylbutyl) peroxide
CAS Number: 105-74-8
Recommended Use: Polymerization initiator, curing agent, specialty synthesis
Manufacturer: Common suppliers in the chemical industry
Emergency Phone: Check with local poison control and supplier-specific emergency contact
Classification: Organic peroxide (Type E), Flammable liquid, Oxidizer, Acute Toxicity (oral, dermal, inhalation), Skin and eye irritant
Signal Word: Danger
Hazard Statements: Unstable at higher temperatures, creates explosion risk, causes burns, toxic by ingestion, contact, or inhalation
Pictograms: Flame, exclamation mark, corrosion, health hazard
Precautionary Statements: Keep away from heat/sparks/open flames; Use explosion-proof equipment; Avoid breathing vapors; Wear eye and skin protection; Store in original container
Chemical Identity: Di-Tert-Pentyl Peroxide
Synonyms: Bis(1,1-dimethylbutyl) peroxide
Concentration: > 98% (typical commercial grade)
Impurities: Trace tert-pentyl alcohols, water, organic byproducts
Inhalation: Remove person to fresh air, keep at rest, seek medical attention, provide oxygen if breathing is difficult
Skin Contact: Remove contaminated clothing, wash affected area thoroughly with soap and water, seek medical help if irritation develops
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek immediate medical help
Ingestion: Do not induce vomiting, rinse mouth, seek immediate medical attention
Most important symptoms: Irritation, burns, difficulty breathing, nausea, headache
Notes for medical staff: Provide symptomatic supportive treatment, watch for delayed effects as organic peroxides can trigger slow tissue damage
Suitable Extinguishing Media: Dry chemical, foam, CO2; water spray (not direct stream)
Unsuitable Media: Direct water jet may spread the burning material
Hazards from combustion: May release carbon oxides, irritating vapors, explosive reactions possible
Protective Equipment: Full protective suit, self-contained breathing apparatus
Firefighting Instructions: Evacuate area, use water spray to cool containers, keep run-off from entering drains, approach from upwind
Precautions: Keep away from heat sources, sparks, flames
Individual Protection: Wear chemical-resistant gloves, goggles, and suitable covering clothing
Ventilation: Use in well-ventilated areas, avoid breathing in vapors or mist
Containment: Absorb with inert material such as sand or vermiculite, avoid combustible material absorption
Clean-Up: Collect absorbed material in explosion-proof container for disposal, wash residue with water and detergent, ventilate area
Handling Safety: Handle under inert atmosphere if possible, avoid friction, shock, and impact; keep containers tightly closed
Storage Requirements: Store in cool, dry, well-ventilated area away from sunlight, incompatible materials, and ignition sources; use temperature-controlled storage; use original containers only
Incompatible Materials: Strong acids, bases, reducing agents, flammable materials, metals
Safe Practices: Ground and bond containers during transfer, don’t use plastic containers that can build static charge
Occupational Exposure Limits: ACGIH TLV not established, minimize exposure by good engineering practices
Engineering Controls: Local exhaust ventilation, explosion-proof fume hoods, vapor detectors
Personal Protective Equipment: Chemical resistant gloves (nitrile or neoprene), safety goggles, splash face shield, flame-resistant lab coat, suitable respirator if ventilation inadequate
Hygiene Measures: Wash hands before breaks and after use, do not eat, drink, or smoke when working with the material
Appearance: Clear to slightly yellow liquid
Odor: Mild, characteristic pungent odor
Odor Threshold: Not determined
Melting Point: Below -30°C
Boiling Point: Around 165°C at atmospheric pressure
Flash Point: < 50°C (closed cup)
Evaporation Rate: Not determined
Flammability: Flammable, can generate explosive vapors
Vapor Pressure: Approx. 2 mmHg at 20°C
Vapor Density: Heavier than air
Solubility in Water: Insoluble
Auto-Ignition Temperature: 190°C–210°C
Decomposition Temperature: 80°C (onset of significant exothermic degradation)
Chemical Stability: Unstable at temperatures above 30°C, decomposes slowly at room temperature
Conditions To Avoid: Heat, flames, sunlight, friction, direct impact
Materials To Avoid: Reducing agents, strong acids, strong bases, heavy metals, amines, combustible materials
Hazardous Reactions: Can self-accelerate decomposition; risk of fire and explosion grows as temperature and concentration rise
Decomposition Products: Carbon oxides, tert-pentyl alcohols, volatile organic compounds
Routes Of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: LD50 (oral, rat) roughly 500 mg/kg; inhalation may cause dizziness, headache, or respiratory distress; skin absorption toxic effects similar
Skin Irritation: Corrosive, causes burns, dermatitis possible
Eye Effects: Severe irritation, redness, possible blindness
Chronic Effects: Potentially sensitizing, repeated exposure may damage internal organs
Carcinogenicity: No clear evidence in animal studies, not classified by IARC
Other Information: No significant reproductive toxicity or mutagenicity data available for this material
Aquatic Toxicity: Harmful to aquatic organisms, may cause long-term adverse impacts in aquatic environments
Persistence / Degradability: Expected to undergo slow breakdown in air and water, not readily biodegradable
Bioaccumulation: Not likely to accumulate in aquatic organisms due to rapid breakdown but still potentially concerning at contamination hotspots
Mobility in Soil: Low water solubility limits spread in groundwater
Other Adverse Effects: Volatile organic release into air may contribute to smog or air pollution if poorly contained
Disposal Methods: Treat as hazardous waste, incinerate under controlled conditions in approved chemical incinerator, do not landfill untreated material
Safe Container Disposal: Clean containers with water and detergent, ensure all residues removed before recycling or disposal
Regulations: Follow local, regional, and national requirements for organic peroxides, do not mix with incompatible wastes, inform waste contractor about material hazards
UN Number: UN 3109
Proper Shipping Name: Organic peroxide type E, liquid (Di-Tert-Pentyl Peroxide)
Hazard Class: 5.2 (Organic Peroxides)
Packing Group: II (Medium hazard)
Label Required: Organic Peroxide, Flammable Liquid
Transport Precautions: Keep upright, packaged in thermal insulation, away from incompatible goods, always inform carriers of hazards, emergency response instructions must travel with the shipment
OSHA: Considered hazardous under OSHA Hazard Communication Standard
TSCA: Listed on the US Toxic Substances Control Act Inventory
EPA SARA: SARA 313 not listed, immediate/acute hazard
EU Regulations: Classified under CLP (Regulation (EC) No 1272/2008) as organic peroxide, stringent controls required for workplace handling
Other Legislation: CERCLA reportable quantity set by local law; compliance with REACH for import into Europe; restrictions under local chemical control regulations worldwide
