© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: Cyclohexanone Peroxide Paste
Common Forms: Paste containing peroxides, typically with stabilizers
Main Ingredient: Cyclohexanone peroxide (organic peroxide mixture with or without diluents)
Appearance: Thick, white paste
Odor: Faint acrid smell, chemical undertones
Industrial Uses: Hardener for unsaturated polyester resins, curing agents in plastics, adhesives, some fiberglass works
Hazard Class: Organic peroxide, classified as highly hazardous due to explosive properties
Main Risks: Strong oxidizer, severe skin and eye irritant, can initiate fires rapidly, capable of explosive decomposition under mechanical shock, friction, or elevated temperature
Health Effects: On skin contact: Redness, irritation, possible burns. Inhalation: Respiratory discomfort, coughing, possible chemical pneumonitis
Environmental Impact: Toxic to aquatic life, can persist in water and soil if released in quantity
Pictograms (per GHS): Corrosive, Flammable, Explosive, Environmental Hazard
Cyclohexanone Peroxide: 55–72% by weight, organic peroxide mixture
Other Ingredients: Stabilizers, plasticizers such as phthalates, possible diluents (e.g., dimethyl phthalate)
Impurities: Water traces, polymerization inhibitors, minor byproducts from manufacturing
Skin Contact: Immediately wash with large amounts of water and soap, remove contaminated clothing
Eye Contact: Rinse cautiously with water for at least 20 minutes, seek medical help immediately
Inhalation: Move person to fresh air, support breathing, consult a physician for breathing difficulty
Ingestion: Rinse mouth, never induce vomiting, seek immediate emergency medical attention
General: Keep exposed individuals warm, calm, and under observation until assistance arrives
Suitable Extinguishing Media: Large amounts of water in spray or fog form. Never use dry chemicals or halogenated agents, as they can accelerate decomposition
Special Hazards: Decomposes violently with heat, producing flammable gases and dense, toxic fumes
Protective Equipment: Full body chemically resistant suit, self-contained breathing apparatus
Preventative Action: Remove all ignition sources, evacuate immediate area, avoid contact with incompatible substances like acids or reducing agents
Immediate Response: Evacuate area, provide adequate ventilation
Spill Handling: Dike spilled product with inert absorbent (e.g., sand, vermiculite), avoid organic absorbents like sawdust
Personal Protection: Wear gloves, goggles, and respirators rated for organic peroxides
Environmental Precaution: Prevent runoff to waterways, sewer, and soil
Disposal: Collect spilled material in safe container for specialized hazardous waste disposal
Storage Conditions: Store in original, tightly closed containers, away from heat sources and direct sunlight
Temperature Control: Keep in cool, dry, well-ventilated areas; avoid freezing and overheating
Separation: Never store near acids, alkalis, reducing agents, combustibles, or food items
Handling Precautions: Wear proper PPE, work in small batches, use spark-proof tools, prevent mechanical shock
Notice: Always follow local regulations and facility safety protocols
Engineering Controls: Chemical fume hood, explosion-proof ventilation, localized exhaust to minimize vapor accumulation
Personal Protective Equipment: Chemical resistant gloves (e.g., nitrile), splash-proof goggles, face shield, body suit or lab coat, closed-toe shoes
Respiratory Protection: Organic vapor respirators recommended for large spills or above safe limits
Hygiene Measures: Wash hands thoroughly after handling, avoid eating or drinking near work area
Exposure Limits: No established ACGIH TLV or OSHA PEL for cyclohexanone peroxide; maintain lowest reasonable exposure
Physical State: Paste (semi-solid)
Color: Off-white to pale yellow
Odor Threshold: Low, noticeable acrid scent
Boiling Point: Not applicable (decomposes before boiling)
Decomposition Temperature: 50–60°C (sensitive to temperature)
Vapor Pressure: Low
Solubility: Limited solubility in water; miscible with organic solvents
Relative Density: 1.1–1.2 (varies by formulation)
Other Data: Explosively unstable under heat, contamination, or shock
Chemical Stability: Unstable, sensitive to heat and physical shock
Hazardous Reactions: Can decompose explosively with acids, amines, strong reducing agents, or trace metals
Incompatible Materials: Alkalis, acids, oxidizable materials, combustibles, metal powders
Decomposition Products: Acetone, cyclohexanone, carbon dioxide, water, toxic fumes (e.g., carbon monoxide, organic acids)
Polymerization: Risk of violent polymerization under certain conditions
Routes of Exposure: Contact (skin, eye), inhalation of vapors, accidental ingestion
Acute Effects: Severe skin and eye irritation or chemical burns, delayed lung effects if inhaled
Chronic Effects: Prolonged exposure to even low levels could lead to dermatitis, respiratory sensitivity
Lethal Dose: Exact LD50 variable; data indicates danger at low-to-moderate exposures
Other Concerns: Not classified as carcinogen by IARC, but can aggravate asthma or existing allergies
Persistence: Not readily biodegradable, can persist in soil and water, posing risk to ecosystems
Toxicity to Aquatic Life: Highly toxic to fish and invertebrates
Bioaccumulation: Unlikely to bioaccumulate, but remains a hazard due to persistence and reactivity
Degradation: Breaks down into organic compounds and CO2 under correct conditions, but uncontrolled release is serious
Waste Treatment: Treat as hazardous organic peroxide waste; use designated solvent-peroxide disposal services
Incineration: Only in licensed chemical incinerators
Contaminated Packaging: Clean thoroughly or dispose in accordance with local, state, and federal regulations
Prohibited Actions: Do not pour down the drain, do not incinerate in open flames, do not mix with incompatible waste
UN Classification: Regulated as an organic peroxide, many countries use UN 3108 (organic peroxide type F, liquid/paste, temperature controlled)
Transport Requirements: Temperature monitored, explosion-proof containers, special driver training
Shipping Labels: Explosive, Oxidizer, Environmental Hazard
Regulations: Follow codes such as ADR, IATA, IMDG
General Advice: Notify transporters in advance, never ship with food or personal use materials
Global Regulations: Listed as hazardous regulated substance under major chemical safety laws
Worker Safety: Strict limits apply under OSHA, EPA, EU REACH, and similar guidelines
Reporting Requirements: Accidental releases must be reported to authorities as per local law
Labeling: Mandatory use of hazard pictograms and signal words on all containers
Employer Responsibilities: Provide up-to-date training in peroxide safety, conduct risk assessments, enforce proper handling and emergency procedures for all staff handling peroxides
