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Product Name: 1,1,3,3-Tetramethylbutyl Hydroperoxide
Synonyms: tert-Octyl hydroperoxide, Hydroperoxide, 1,1,3,3-tetramethylbutyl-
CAS Number: 5809-08-5
EC Number: 227-434-9
Recommended Use: Chemical intermediate, polymerization initiator, specialty oxidizer
Supplier Details: Company address, technical support contact, emergency telephone
Emergency Phone Number: Available on supplier’s label, also referenced in national poison control registry
GHS Classification: Flammable liquids (Category 3), Organic peroxides (Type D), Acute toxicity (Oral, Category 4), Acute toxicity (Inhalation, Category 4), Skin corrosion/irritation (Category 2), Serious eye damage/eye irritation (Category 2A)
Signal Word: Danger
Hazard Statements: Causes skin irritation, causes serious eye irritation, harmful if swallowed or inhaled, combustible liquid, may cause fire through spontaneous heating
Pictograms: Flame, exclamation mark
Precautionary Statements: Avoid breathing vapour or mist, keep away from heat/sparks/open flames, use explosion-proof equipment, wear protective gloves, eye and face protection, wash hands thoroughly after handling
Chemical Name: 1,1,3,3-Tetramethylbutyl Hydroperoxide
Concentration Range: ≤ 100% (pure substance as supplied)
Impurities: None known that affect classification
Molecular Formula: C8H18O2
Molecular Weight: 146.23 g/mol
Other Components: None identified as significant
Inhalation: Move the person to fresh air, keep comfortable for breathing, seek immediate medical attention if symptoms persist, administer oxygen if breathing is difficult
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, consult a physician if irritation develops, launder clothes before reuse
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy to do, seek medical advice if irritation or symptoms persist
Ingestion: Rinse mouth, do not induce vomiting, seek medical attention right away, never give anything by mouth to an unconscious person
Most Important Symptoms: Redness, burning sensation, coughing, headache, dizziness, possible delayed symptoms like chemical burns
Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide, water spray (not directly onto burning liquid), avoid high-pressure water streams
Specific Hazards: Vapours may form explosive mixtures with air, combustion liberates irritating and toxic fumes including carbon oxides
Protective Equipment for Firefighters: Wear self-contained breathing apparatus, full protective gear including chemical-resistant boots and gloves, avoid inhalation of combustion gases
Special Procedures: Cool exposed containers with water spray, keep personnel away from storage tanks, evacuate area when risk of explosion
Personal Precautions: Remove ignition sources, ventilate area, avoid contact with skin or eyes, keep unprotected personnel away, wear respirator and protective gear
Clean-up Methods: Absorb with inert material such as vermiculite or sand, do not use combustible materials like sawdust, collect leaking liquid in sealable containers, dispose as hazardous waste
Environmental Precautions: Prevent entry into sewers, drainage systems or water courses, notify authorities if significant spill enters environment
Reference to Other Sections: See measures for fire response, exposure controls, and waste disposal
Safe Handling: Do not breathe vapours or mist, avoid contact with eyes, skin and clothing, use only in well-ventilated areas, keep containers closed when not in use, ground and bond containers during transfer
Storage Conditions: Store in a cool, dry, well-ventilated place away from sunlight, keep away from sources of ignition and incompatible materials (acids, bases, reducing agents, some metals), maintain storage temperature below 30°C, use corrosion-resistant containers with tight-fitting lids
Incompatible Materials: Strong reducing agents, strong acids and bases, heavy metals and their salts, organic material, combustibles
Control Parameters: No workplace exposure limit established yet, use occupational exposure limits for similar peroxides if available
Engineering Controls: Use local exhaust or general ventilation to keep airborne levels below exposure limits, install explosion-proof electrical systems
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), safety goggles, face shield, flame-retardant lab coat, respiratory protection if ventilation is inadequate, no open flames or sparks near the use area
Hygiene Measures: Wash hands before breaks and after handling, remove contaminated clothing and clean before reuse, no eating or drinking in work area
Appearance: Colourless or pale yellow liquid
Odour: Faint, pungent
Odour Threshold: Not determined
pH: Not applicable
Melting Point/Freezing Point: -5°C
Boiling Point/Range: 145°C
Flash Point: 74°C (Closed cup)
Evaporation Rate: Not determined
Flammability: Combustible
Upper/Lower Flammability Limits: Not established
Vapour Pressure: 2 hPa at 25°C
Vapour Density: Not determined
Relative Density: 0.84-0.88 g/cm³
Solubility: Insoluble in water, soluble in organic solvents (alcohol, ether)
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: 225°C
Decomposition Temperature: Not determined
Viscosity: Not determined
Chemical Stability: Thermally unstable, decomposes with heat, shock, friction or contamination
Possibility of Hazardous Reactions: Polymerizes violently in contact with certain incompatible substances, generates heat and gas
Conditions to Avoid: High temperatures, direct sunlight, open flames, shock, static discharge
Incompatible Materials: Acids, bases, reducers, heavy metals, organic solvents not recommended for peroxides
Decomposition Products: Carbon oxides, water, potential formation of hydrocarbon fragments and other toxic gases
Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity (Oral): LD50 (rat): 300-2000 mg/kg
Acute Toxicity (Inhalation): Based on similar chemicals, vapour may be harmful in confined spaces, causes irritation of nose and throat
Skin Corrosion/Irritation: Causes moderate to severe irritation, possible chemical burns with prolonged contact
Serious Eye Damage/Irritation: Highly irritating, risk of corneal injury
Sensitization: Not expected to cause skin sensitization, data limited
Repeated Exposure: Prolonged contact may cause dry or cracked skin, dermatitis; inhalation may cause respiratory tract irritation
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Mutagenicity/Reproductive Toxicity: No available data indicating genotoxic or reproductive hazard
Toxicity to Aquatic Life: May cause harm to aquatic organisms at high concentrations, data incomplete
Persistence and Degradability: Expected to biodegrade moderately over time, not persistent under most environmental conditions
Bioaccumulation Potential: Not likely to bioaccumulate based on water solubility and chemical structure
Mobility in Soil: Low mobility due to limited water solubility, likely to partition to organic matter
Other Adverse Effects: No known significant long-term negative environmental impact, but not fully assessed
Waste Treatment Methods: Incinerate at high temperature in a chemical incinerator with afterburner and scrubber, do not allow material to reach drains or water sources, follow all local and national regulations
Contaminated Packaging: Rinse thoroughly, puncture and dispose safely, recycle or dispose per legislation
Other Precautions: Do not mix with incompatible wastes, label containers with proper hazard information
UN Number: UN 3109
Proper Shipping Name: Organic peroxide type D, liquid (1,1,3,3-Tetramethylbutyl Hydroperoxide)
Transport Hazard Class: 5.2 (Organic peroxide)
Packing Group: II
Labels Required: Organic peroxide, flammable liquid
Special Provisions: Keep away from heat, direct sunlight, avoid transport with incompatible substances, use explosion-proof containers
Environmental Hazards: Not designated as a marine pollutant; consult shipping regulations for updates
Transport in Bulk: According to Annex II of MARPOL and IBC Code for chemical tankers if applicable
Regulatory Status: Listed in relevant chemical inventories (TSCA, EINECS, DSL)
SARA Title III: Subject to emergency planning and notification under sections 302, 311, 312
RCRA Status: Treat as hazardous waste under federal and state laws
Labeling Requirements: Comply with OSHA Hazard Communication Rule, GHS criteria
Other National Regulations: Reach, WHMIS, ADR, IMDG, IATA, follow all workplace and environmental laws
Notification: All chemicals must be handled by trained operators following site-specific risk assessments
