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Chemical Name: 3-Chloroperbenzoic Acid
Common Synonyms: m-Chloroperoxybenzoic acid, mCPBA
Chemical Formula: C7H5ClO3
CAS Number: 937-14-4
Physical Form: Solid, white to off-white crystalline powder
Typical Use: Laboratory oxidizing agent, used mostly in organic synthesis for epoxidation and oxidation of sulfides
Main Dangers: Strong oxidizer, reacts fiercely with combustible material, risk of fire and explosion, can burn skin and eyes, harmful if inhaled, may cause severe irritation or burns upon contact
Health Risks: Causes severe skin and eye irritation, respiratory irritation, prolonged exposure threatens long-term tissue health
Environmental Risks: Hazardous to aquatic life at higher concentrations, can trigger hazardous reactions in waste streams
Main Ingredient: 3-Chloroperbenzoic Acid, usually over 75% purity
Branched Impurities: Trace organic acids, water, stabilizers, less than 5% moisture content typically
No Known Carcinogens: Regulatory agencies don't include this chemical as a known carcinogen, though consistent safe practices matter
Inhalation: Get outside into fresh air quickly, loosen any restrictive clothing, keep breathing calmly, get medical help if cough or breathing trouble stays
Contact with Skin: Wash skin right away with running cool water for at least 15 minutes, remove contaminated clothing, seek medical care for burns or ongoing irritation
Contact with Eyes: Rinse eyes right away with plenty of water, lifting upper and lower eyelids, keep rinsing for at least 15 minutes, see a doctor urgently
Swallowing: Drink water only if totally alert, don't force vomiting, head to emergency room promptly, show product label if possible
Best Extinguishing Tools: Use water spray, foam, or dry chemical fire extinguishers, avoid using CO2 on big oxidizer fires, keep fire far from organic material
Special Hazards: Fire releases toxic gases like hydrogen chloride, benzene derivatives, fumes can be dangerous for lungs
Protective Gear: Firefighters need full gear and self-contained breathing apparatus, keep a safe distance unless emergency rescue is needed
Cool Containers: Keep nearby drums and bottles cool with water, explosion risk grows if containers get hot
Evacuation: Limit all non-essential entry, shut off area quickly, call for help if large amounts spill
Personal Safety: Wear higher-level personal protective equipment—gloves, splash goggles, face protection, apron
Cleanup Process: Clean with non-combustible absorbent such as vermiculite or sand, scoop up gently and transfer to safe disposal container, rinse area well with plenty of water to remove all residues
Ventilation: Open windows or use powered extraction to clear out vapor or mist
Storage Setups: Store away from heat, direct sunlight, and moisture, use dedicated oxidizer cabinets with proper signage, never keep near solvents, paper, or combustibles
Handling Tips: Keep amounts small, avoid breathing dust, wear gloves and goggles every time, wash hands right after handling
Long-Term Stability: Only open bottles in fume hoods, always reseal promptly, keep containers tightly closed and dry
Ventilation: Work under certified chemical fume hoods or with local exhaust ventilation, stay clear of stagnant areas
Personal Protective Equipment: Wear chemical splash goggles, nitrile rubber gloves, lab coat or apron, consider face shield for larger quantities, change gloves often
Hygiene: Wash hands and face after use, avoid eating or drinking in lab spaces, change contaminated clothing right away
Monitoring: Keep a spill kit and eyewash station close, run regular safety checks on equipment
Appearance: White to pale, crystalline powder
Smell: Slightly sharp or chlorine-like
Melting Point: Ranges from 106°C to 110°C, varies slightly in commercial batches
Solubility: Dissolves in chloroform and other organic solvents, low solubility in water
Decomposition Risk: Breaks down if overheated, even without flame; undergoes violent reaction at 150°C
Instability Factors: Unstable when heated or in contact with moisture, reacts fast with organic substances, metals, acids, bases, or strong reducers
Dangerous Reactions: Watch for self-accelerating decomposition, can explode under fire or heavy impact, produces irritating and corrosive fumes if it breaks down
Avoid Storage With: No storage near paper, oil, wood, or other combustibles; keep away from alkalis, heavy metals, or reducing agents
Main Exposure Risks: Breathing dust or vapor irritates throat and lungs, skin or eye exposure leads to redness, pain, or burns, swallowing triggers nausea, headache, and digestive distress
Permanence: Effects depend on quantity and duration, lowest lethal dose in animal studies varies strongly by species and form
Sensitization: No strong evidence for long-term sensitization, but short-term exposure can rapidly inflame skin and mucous tissue
Chronic Exposure: Data is incomplete, best practice stays clear of repeated contact
Aquatic Toxicity: Harmful in high concentrations, can damage aquatic plants and tiny aquatic critters, especially in confined water
Persistence: Tends to break down in the environment with time, fragments into chlorinated benzoic acids that might linger longer
Bioaccumulation: Little evidence for accumulation in food chains, but repeated releases could build up low-level soil or water contamination
Precaution: Never pour down the drain, keep containment procedures strict
Never Toss in Trash: Treat as hazardous chemical waste, use safe containers, label clearly for pickup
High-Heat Incineration: Best disposal option involves specialist chemical incinerators capable of handling strong oxidizers
Liquid Waste: Neutralize carefully with reducing agents under strict control if permitted, never mix with paper or solvents
Consult Local Rules: Follow all regional, state, and national rules for chemical waste
Shipping Name: 3-Chloroperbenzoic Acid, regulated as an Oxidizing Solid
Hazard Class: Oxidizer
Packing Group: Varies by region and shipment size, usually Class II or III
Special Rules: Must use padded, pressure-relief containers, carriers require labeling as hazardous, keep away from food and animal feeds
Transport Precautions: No transport with combustibles or flammable materials, avoid bumps, heat, or sunlight during the route
Global Status: Major chemical safety agencies—such as OSHA in the US and REACH in the EU—list 3-Chloroperbenzoic Acid as a controlled hazardous substance
Labeling Requirements: Strict hazard labeling required, including oxidizer and acute danger pictograms
Use Reporting: Research labs and chemical handlers must log shipments, storage, and usage details to comply with safety audits
Workplace Exposure Limits: No uniform exposure limit set worldwide, but best practice follows tight occupational hygiene standards and prompt reporting of accidents
Training Mandate: All workers need documented chemical safety training before using or disposing of this compound
