Product Name: Cyclohexanone Peroxide
Chemical Family: Organic Peroxides
Recommended Use: Polymerization Initiator, Laboratory Reagent
Supplier Details: Manufacturer or Distributor Contact Information and Emergency Contact Number
Synonyms: Peroxide, Cyclohexanone peroxide
CAS Number: 78188-89-5
UN Number: 3109
GHS Classification: Organic Peroxide Type D, Acute Toxicity, Skin Corrosion, Eye Damage
GHS Label Elements: Danger, Exploding Bomb and Corrosion Pictograms
Hazard Statements: Heating may cause a fire or explosion, Harmful if swallowed, Causes severe skin burns and eye damage
Precautionary Statements: Keep away from heat, Handle with care, Wear protective gloves and eye protection, Wash hands thoroughly, Take precautionary measures against static discharge
Health Effects: Burns to eyes and skin, Gastrointestinal upset, Respiratory tract irritation
Environmental Effects: Risk to aquatic life from spills or improper disposal
Cyclohexanone Peroxide: 80%–90% by weight
Solvents/Carriers: Water, Phlegmatizers such as Dibutyl Phthalate (balance)
Stabilizers: Inhibitors or Antioxidants as supplied (may vary by manufacturer)
Impurities: Trace organic peroxides, decomposition products
EC Number: 616-004-8
Inhalation: Move to fresh air, lay at rest, keep warm, seek medical attention
Skin Contact: Remove contaminated clothing, rinse skin with water for at least 20 minutes, obtain medical help if irritation or burns appear
Eye Contact: Rinse cautiously with water for several minutes, hold eyelids apart, remove contact lenses if present, continue rinsing, contact a physician
Ingestion: Rinse mouth, never induce vomiting, seek immediate medical advice
Symptoms: Eyes: Redness, severe damage; Skin: Redness, blisters, burns; Ingested: Abdominal pain, nausea; Inhaled: Cough, sore throat, chest tightness
Advice for Doctors: Treat symptomatically, monitor for respiratory and cardiovascular complications
Suitable Extinguishing Media: Water spray, foam, dry sand – cool surrounding exposed containers
Unsuitable Media: Carbon dioxide, dry chemical, halon due to risk of reactivity
Specific Hazards: Organic peroxides decompose explosively when heated, produce toxic fumes (carbon monoxide, carbon dioxide, various hydrocarbons)
Fire Fighting Recommendations: Full protective gear, self-contained breathing apparatus; evacuate area, use water in flooding quantities
Special Procedures: Remove containers from fire if safe, prevent water run-off from entering drains
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, volatile organic compounds
Personal Protection: Chemical splash goggles, face shield, chemical resistant gloves, impervious apron
Emergency Procedures: Evacuate area, ventilate, restrict access
Environmental Precautions: Prevent spillage from reaching drains and natural watercourses
Containment: Scoop up spilled material with non-combustible absorbent (sand, earth), avoid contact with oxidizable material
Cleanup Methods: Sweep up without raising dust, deposit in labeled, fire-resistant container for disposal, decontaminate area with large volumes of water
Reporting: Notify local authorities if spill could cause environmental harm
Handling Precautions: Avoid friction, shock, heat, open flames, rough handling; keep container tightly closed; only use tools and containers that prevent sparks
Storage Conditions: Store in a cool, dry, well-ventilated location—preferably below 30°C (86°F); keep separate from combustibles, reducing agents, acids, bases
Incompatible Materials: Strong acids, bases, oxidizers, metals, amines, reducing agents
Storage Container: Use original or specially designed containers made of compatible material
Special Rules: Do not return unused material to container, maintain strict inventory control
Fire Protection: Keep extinguishers and spill materials nearby, observe regulations for organic peroxide storage
Occupational Exposure Limits: No official Threshold Limit Value established—minimize exposure
Engineering Controls: Use local exhaust ventilation, fume hoods, explosion-proof equipment
Personal Protective Equipment: Safety goggles, face shield, gloves (nitrile, neoprene, butyl rubber), flame-resistant clothing, chemical apron, closed shoes
Respiratory Protection: Suitable NIOSH-approved respirator in poorly ventilated or accidental situations
Workplace Hygiene: Wash hands thoroughly before breaks or meals, do not eat or smoke in work area
Monitoring: Regular assessment for vapor concentration, signs of peroxide decomposition
Appearance: Clear to pale yellow liquid (sometimes crystallized paste)
Odor: Pungent, organic, sweetish
pH: Typically acidic (2 - 3)
Melting Point/Range: Approximately 41°C (temperature varies with formulation)
Boiling Point: Decomposes before boiling
Flash Point: Not applicable—decomposes with heat
Solubility: Limited in water, soluble in most organic solvents
Density: About 1.1 – 1.2 g/cm³
Vapor Pressure: Low at room temperature
Explosive Properties: Can detonate by heat, shock, or friction
Partition coefficient (n-octanol/water): Not established
Chemical Stability: Stable below 30°C with proper inhibitor, rapidly decomposes at higher temperatures
Conditions to Avoid: Heat, flames, friction, impact, contamination with incompatible materials
Materials to Avoid: Strong acids, bases, metallic powders, reducing agents, amines
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, volatile organic compounds
Polymerization: Not known to polymerize but can violently decompose
Reactivity: Strong oxidizer, reacts explosively with organics, metals, combustible matter
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: Harmful if swallowed or inhaled; causes burns to skin and eyes
Skin Irritation: Severe, leading to blisters and deep tissue injury
Eye Damage: Permanent vision loss possible
Respiratory Effects: Cough, sore throat, lung irritation, risk of pulmonary edema
Chronic Effects: Sensitization and dermatitis possible with repeated exposure
LD50 (Oral, rat): Data specific to formulation, but typically low-mg/kg range indicating high toxicity
Carcinogenicity: Not classified, not listed as carcinogenic by major agencies
Reproductive Toxicity: No known effects data available
Ecotoxicity: Very toxic to aquatic life due to reactivity and breakdown products
Persistence and Degradability: Not persistent, readily decomposes in environment but may release hazardous byproducts
Bioaccumulative Potential: No significant potential due to breakdown
Mobility in Soil: Mobile in water, may leach in groundwater if spilled in bulk
Other Adverse Effects: Reduces available oxygen in water through decomposition, may disrupt aquatic life cycles
Disposal Methods: Send to licensed hazardous waste incineration facility—never pour down drain, onto soil, or in regular trash
Contaminated Packaging: Treat empty containers as hazardous, follow chemical waste regulations
Precautions: Avoid mixing with combustible or reactive waste, minimize storage time before disposal
Regulatory Compliance: Observe local and national hazardous waste disposal regulations, document disposal
UN Number: 3109
Proper Shipping Name: Organic Peroxide Type D, Liquid (Cyclohexanone peroxide)
Hazard Class: 5.2 (Organic Peroxide)
Packing Group: II (high danger)
Label: Organic Peroxide (Exclamation if acute hazardous)
Transport Conditions: Specially designed, temperature-controlled packaging; emergency response available
Marine Pollutant: Yes; avoid marine discharge
Special Precautions: Protect from physical damage, separate from combustibles, document transfers and emergency contacts
USA (OSHA): Covered by Process Safety Management for highly hazardous chemicals
EU Regulations: REACH registered, subject to Seveso III Directive
Labeling Requirements: GHS labels with proper hazard statements and pictograms
Storage Regulations: Subject to restrictions for quantity storage and segregation from other hazardous classes
Inventory Status: Listed on chemical inventories in the USA (TSCA), EU (EINECS), Australia (AICS), Canada (DSL/NDSL)
Reporting: Releases must be reported under CERCLA/SARA in the USA, and REACH in Europe
Local/State Regulations: May require specific storage permits, periodic inspections
