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Name: Dibenzoyl Peroxide Paste, Content ≤ 52%
Appearance: White or off-white thick paste
Main Use: Curing agent for resins, used in plastics, adhesives, and chemical synthesis
Main Concern: Strong oxidizer, known for a tendency to decompose
Odor: Faint, almost unnoticeable
Health Angle: Classified as hazardous due to oxidizing and irritant qualities
Physical Hazards: Highly reactive, risk of fire and explosion if handled carelessly
Health Hazards: Eye, skin, and respiratory tract irritant, can cause burns with prolonged or repeated contact
Environmental Risks: Toxic to aquatic life, persistence in water and soil, may cause long-term negative effects if not contained
Main Signal Word: Danger
Key Hazard Pictograms: Flame, exclamation mark, corroded material
Major Risk: Contact with combustibles or organic material can lead to rapid reaction
Dibenzoyl Peroxide Concentration: Up to 52%
Other Components: Water, stabilizers, possibly inert carrier or phthalate plasticizers for safe handling
CAS Number: 94-36-0 for active ingredient
Impurities: Can include stabilizer residues, trace organic byproducts from manufacturing
Eye Contact: Rinse with plenty of water immediately, remove contact lenses
Skin Contact: Rinse with soap and water, remove contaminated clothes
Inhalation: Move person to fresh air, provide oxygen if breathing becomes labored
Ingestion: Do not induce vomiting, drink water if person is alert, seek medical help immediately
Symptoms to Watch For: Redness, burning, breathlessness, persistent itching or irritation
Extinguishing Media: Water spray—dry powder or foam can add to danger if misapplied
Special Hazards: Decomposes to release oxygen, feeding any fire even more
PPE for Firefighters: Full gear, self-contained breathing apparatus
Combustion Products: Benzene, benzoic acid, carbon oxides, irritant organic fumes
Risk of Reignition: High, so cool exposed containers with water even after fire looks out
Immediate Steps: Evacuate area, don gloves and goggles, ventilate space
Containment: Scoop up spilled paste using non-combustible material, avoid dust generation
Disposal of Waste: Use tightly sealed containers, never allow to dry out
Environmental Precautions: Block entry into drains, surface water or soil
Cleanup Crew Protection: Gloves, eye protection, disposable coveralls recommended
Handling: Work in well-ventilated areas, avoid contamination with other chemicals, especially organic compounds or reducing agents
Storage: Keep in original container, away from sources of heat, sparks, or direct sunlight, ideally in a cool room well away from work areas
Separation: Segregate from acids, bases, strong oxidizers, and combustible materials
Routine Precautions: Regular inspection and maintenance of storage areas essential
Engineering Controls: Fume hoods or local exhaust to control airborne vapors or dust
Personal Protective Equipment: Chemical goggles, nitrile gloves, long sleeves, closed shoes
Respiratory Protection: Masks or respirators if ventilation can’t control exposure
Hygiene Advice: Wash hands thoroughly after handling, never eat or drink near work
Exposure Limits: Occupational guidelines for airborne concentrations vary by agency and country
Form: Paste, semi-solid
Color: White to pale yellow
Odor: Barely noticeable
Melting Point: Not clear due to paste consistency but the active peroxide melts at about 103°C
Solubility: Insoluble in water, soluble in organic solvents
Boiling Point: Decomposes before boiling
Vapor Pressure: Very low
Stability: Reactive, especially under heat or when allowed to dry
Chemical Stability: Unstable under heat or direct sunlight
Reactivity: Reacts violently with reducing agents, acids, some metals and combustibles
Hazardous Decomposition: Benzene, carbon oxides, benzoic acid, various organic fumes
Incompatibilities: Avoid mixing with other peroxides, accelerators, or flammable products
Polymerization: Risk low unless exposed to high heat or incompatible chemicals
Routes of Exposure: Skin absorption, inhalation, possible ingestion
Acute Effects: Irritation of eyes, skin, and mucous membranes, may cause burns
Chronic Effects: Dermatitis, potential lung effects with poor ventilation or repeated exposure
Animal Data: Moderate toxicity to lab rats and rabbits in standard toxicity tests
Carcinogenicity: Not proven carcinogen but chronic exposure carries risk
Aquatic Toxicity: Harmful to fish and aquatic invertebrates
Persistence: Known to break down slowly in environment
Bioaccumulation: Not likely to bioaccumulate significantly but still should avoid repeated release
Soil Mobility: Stays mainly in upper soil layers
Advice: Careful containment and disposal crucial to prevent ecological harm
Product Disposal: Small amounts can go with chemical waste streams authorized for oxidizers
Container Disposal: Rinse thoroughly before recycling or landfill, according to local rules
Precaution: Avoid any evaporation or drying out before final disposal
Environmental Protection: Never wash into sewer or natural watercourses
Shipping Name: Organic Peroxide Type B, paste
Hazard Class: 5.2 (Organic peroxide)
Packing Instructions: Specialized packaging, temperature-controlled trucks common, keep under max recommended temperature
Additional Advice: Never ship with combustible or incompatible goods, labels and placards must clearly show hazard
Occupational Standards: Regulated in many countries as a hazardous material
Chemical Inventory: Found in most national chemical databases
Storage Codes: Controlled permits often needed for storage or bulk use
Hazard Communication: GHS labeling and documentation required
Worker Training: Hands-on safety training, not just documentation, helps reduce incidents
