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Product name: Cumyl Hydroperoxide
Chemical Formula: C9H12O2
Synonyms: Alpha,alpha-dimethylbenzyl hydroperoxide; Cumene hydroperoxide
Recommended use: Industrial organic peroxide, polymerization initiator, intermediate in chemical synthesis
Manufacturer: [Company Name], [Contact Information]
Emergency phone number: [Insert Number]
CAS Number: 80-15-9
EC Number: 201-254-7
Classification: Organic peroxide type E, skin corrosive category 1B, acute toxicity oral category 4, acute toxicity inhalation category 4, specific target organ toxicity – single exposure category 3
GHS Label Elements: Danger, flame pictogram, exclamation mark, corrosion
Hazard statements: Heating may cause fire or explosion; harmful if swallowed; causes severe skin burns and eye damage; may cause respiratory irritation
Precautionary statements: Keep away from heat, sparks, open flames, and hot surfaces; keep container tightly closed; handle under inert gas or refrigeration; wear protective gloves, clothing, and eye/face protection; avoid breathing vapors
Routes of exposure: Dermal, inhalation, ingestion
Symptoms of overexposure: Cough, sore throat, shortness of breath, redness, burns, abdominal pain, nausea, vomiting
Environmental hazards: Toxic to aquatic life, causes long lasting effects
Cumyl hydroperoxide: 55–72%
Type A Diluent (contains non-hazardous stabilizing agent): 28–45%
Impurities: Benzene (≤0.1%), Acetophenone (trace), Cumene (minor amount), Water (<1%)
All constituents listed or exempted under TSCA and REACH
Inhalation: Move to fresh air; provide oxygen if breathing is difficult; seek prompt medical attention
Skin contact: Remove contaminated clothing immediately; rinse skin under running water for at least 15 minutes; wash thoroughly with soap; seek medical help for irritation or burns
Eye contact: Rinse with plenty of lukewarm water for 15 minutes lifting eyelids; remove contact lenses if present; get medical attention right away
Ingestion: Rinse mouth; drink plenty of water if conscious; do not induce vomiting; get emergency medical assistance
Notes for physician: Treat symptomatically; monitor for chemical burns or respiratory issues; consider possible delayed lung effects
Most important symptoms: Burns, respiratory distress, chemical pneumonitis, redness, nausea, pain
Suitable extinguishing media: Water spray (fog), foam for larger fires; small quantities may be extinguished with dry chemical or CO₂
Unsuitable extinguishing media: Do not use carbon dioxide for large fires; avoid direct water jet
Fire hazards: Decomposes explosively at high temperatures, strong oxidizer, supports combustion
Hazardous combustion products: Phenol, cumene, carbon monoxide, carbon dioxide, organic acids
Protection for firefighters: Full turnout gear and self-contained breathing apparatus; isolate area for at least 150 meters in all directions if large fire or explosion risk
Special procedures: Cool surrounding containers with water spray; evacuate area; prevent run-off to water sources or sewers
Personal precautions: Evacuate unnecessary personnel; ventilate enclosed areas; use personal protective equipment including gloves, goggles, and respirator
Environmental precautions: Do not let chemical enter groundwater, sewers, or drains; notify local authorities if unavoidable release occurs
Containment: Absorb spill with inert material such as vermiculite; stop leak if safe; keep away from flammable or combustible materials
Cleanup methods: Shovel up material into leak-proof, labeled containers; keep away from sources of heat or sparks; dispose in accordance with regulations
Decontamination: Wash spill area with dilute sodium carbonate and water, then rinse thoroughly
Monitoring: Test atmosphere for peroxide concentration and flammable vapors
Handling: Work in well-ventilated or explosion-proof areas; avoid all sources of heat, sparks, and static; ground all equipment; transfer using corrosion-resistant tools
Storage: Store in original, tightly sealed container; keep away from sunlight, direct heat, oxidizers, combustibles; maintain temperature below recommended storage maximum (20°C/68°F)
Incompatibles: Strong acids, strong bases, reducing agents, metals, halogenated materials
Special requirements: Add stabilizer if long-term storage, regular inspection for container damage or swelling, emergency plans for rupture
Shelf life: Stable under recommended conditions for up to six months, then periodic testing required
Occupational exposure limits: Cumyl hydroperoxide (OSHA, NIOSH, ACGIH): 1 ppm TWA, 6 mg/m³; ACGIH skin notation
Engineering controls: Explosion-proof exhaust ventilation, closed systems for bulk handling, local extraction at sources
Personal protective equipment: Chemical resistant gloves (Butyl or Viton recommended); splash-proof goggles; full face shield for splashes; flame-retardant protective clothing; NIOSH-approved respirator for vapor or mist
Hygiene measures: Remove contaminated clothing quickly; wash hands, forearms, and face after handling; no smoking or eating in work area
Appearance: Colorless or slightly yellow, oily liquid
Odor: Aromatic, sharp
Odor threshold: Low, perceptible at ppm levels
pH: Not applicable (does not dissolve in water readily)
Melting point: -30°C
Boiling point: Decomposes before boiling (~153°C decomposition)
Flash point: 80°C (closed cup)
Evaporation rate: Slow
Flammability: Flammable liquid category 4
Vapor pressure: 1.3 hPa (20°C)
Vapor density: >1 (air = 1)
Relative density: 1.06 – 1.09 (water = 1)
Solubility: Insoluble in water, miscible with organic solvents
Partition coefficient: log Pow = 2.16
Decomposition temperature: 150°C
Viscosity: 10-30 mPa.s
Chemical stability: Unstable above 50°C; sensitive to heat, shock, friction
Thermal decomposition: Releases explosive gases, phenol, cumene, and corrosive vapors
Hazardous polymerization: May occur under contaminated or high temperature conditions
Incompatible substances: Strong acids, alkalis, reducing agents, transition metals
Avoid: Heat, light, spark, static, and contamination by organic materials
Hazardous decomposition products: Carbon monoxide, carbon dioxide, cumene, phenol, acetophenone, water
Likely routes of exposure: Inhalation, skin absorption, ingestion
Acute toxicity: LD50 (oral, rat): 382 mg/kg; LD50 (dermal, rabbit): 500 mg/kg
Skin corrosion/irritation: Causes severe irritation, burns, ulceration
Serious eye damage/irritation: Severe; may cause irreversible injury, blindness
Respiratory effects: Inhalation causes sore throat, burning sensation, shortness of breath, chest tightness, chemical pneumonitis
Carcinogenicity: Not listed by IARC, NTP, OSHA, but contains trace benzene (carcinogenic) as impurity
Mutagenicity: No evidence in standard tests
Other health effects: Headache, dizziness, weakness, skin sensitization
Aquatic toxicity: Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment
LC50 (fish, 96h): 1.9 mg/l (Oncorhynchus mykiss)
EC50 (daphnia, 48h): 7.6 mg/l
Biodegradability: Not readily biodegradable
Persistence: Degrades slowly in soil and water; hydroperoxide breaks down to phenol and cumene
Bioaccumulation: Moderate potential; log Pow suggests uptake into aquatic organisms
Other risks: Toxic to bees and some plant life
Degradation products: Phenol has acute and chronic toxicity to aquatic organisms
Waste disposal methods: Collect in leak-proof containers; incinerate at a facility licensed for combustible organic peroxides; never release to sewer or open dump
Contaminated packaging: Rinse well with water and soda, then send for hazardous waste disposal
DOT/EPA waste code: U-417; hazardous waste material
Precautions: Neutralize remaining residue with sodium sulfite in an alkaline medium under monitoring; do not allow to evaporate or heat during storage for disposal
UN Number: UN 3109
Proper shipping name: Organic peroxide type E, liquid (Cumyl hydroperoxide formulation)
Transport hazard class: 5.2 Organic peroxides
Packing group: II
Labels required: Flammable, corrosive, organic peroxide
Special precautions: Keep cool during transit; prevent heating above 20°C; avoid shock and sunlight
Regulatory requirements: Shipment must comply with 49 CFR (US), ADR/RID (Europe), IMDG (sea), IATA (air)
TSCA: Listed
REACH: Registered substance, authorization not required, subject to restrictions on use
OSHA: Highly hazardous chemical, PPE required
SARA Title III: Section 302 (EHS)—Yes; Section 311/312—Immediacy, Fire, Reactivity; Section 313—Reportable if >1,000 lbs/yr
RCRA: Hazardous waste (U417)
California Proposition 65: Contains benzene (trace); warning required for known reproductive toxicity
Other: Workplace labeling must indicate peroxide risk; safety training required before use
International inventories: Compliant with Australia (AICS), Canada (DSL/NDSL), EU (EINECS/ELINCS), Japan (ENCS), Korea (KECL), Philippines (PICCS), China (IECSC)
