© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: P-Diethylbenzene
Synonyms: 1,4-Diethylbenzene
Molecular Formula: C10H14
CAS Number: 105-05-5
PDEB, with its two ethyl groups attached to a benzene ring, sits among aromatic hydrocarbons used in industry, mainly for producing specialty chemicals, fuel additives, or even as intermediates in resins and plastics. The identification helps keep chemical shipments and storage clear; confusion with similar-sounding materials leads to serious safety problems, like accidental mixing or mishandling.
Hazard Class: Flammable Liquid
Health Hazards: Irritation to skin, eyes, and respiratory tract
Environmental Hazards: Toxic to aquatic life, potential long-term effects in the environment
Fire is a big risk with PDEB, so it deserves respect in any setting with ignition sources—poor handling contributes to industrial fires. Inhalation or contact irritates; not taking precautions leads to chronic coughs or rashes, and run-off contaminates waterways, affecting aquatic organisms.
Component: P-Diethylbenzene >98%
Impurities: Trace amounts of other diethylbenzene isomers, monoethylbenzene, benzene
Knowing what's in the drum or bottle is important—unexpected impurities trigger unsafe reactions; knowing benzene sometimes appears in trace amounts is crucial because it is a known carcinogen.
Eye Contact: Rinse thoroughly with plenty of water. Get medical attention if irritation persists.
Skin Contact: Wash affected area with soap and water. Take off contaminated clothing.
Ingestion: Rinse mouth, seek medical help right away.
Inhalation: Move to fresh air, keep snug and warm, get medical attention if breathing problems begin.
PDEB in the eyes or lungs puts a worker out of commission for days—prompt cleaning and medical support prevent long-term damage. Immediate measures also reduce permanent harm, which helps keep both the individual and the workplace healthy and running.
Suitable Extinguishing Media: Use foam, dry chemical, or carbon dioxide extinguishers
Unsuitable Media: Never use water in a direct stream as it spreads burning liquid
Protective Gear: Full protective gear and self-contained breathing apparatus recommended
Hazardous Combustion Products: Emits toxic fumes like carbon monoxide and carbon dioxide on burning
Fire crews need training and readiness—burning PDEB is not like burning paper; it releases toxic gases and reignites easily. Using water jets makes fires worse, so dry chemical extinguishers or foam should be on hand wherever this chemical is stored in bulk.
Personal Precautions: Use personal protective equipment, avoid inhaling vapors
Environmental Precautions: Prevent the material from entering drains, sewer systems, or waterways
Containment: Absorb with inert material like sand or vermiculite
Disposal: Gather in suitable closed containers
A spill of PDEB turns into a safety threat and an environmental incident quickly. By keeping gear close by and blockading storm drains and runoff trenches, quick action keeps harm at bay. Workers who move without hesitation manage smaller clean-up zones, which makes emergencies less spectacular and more routine.
Handling: Keep containers tightly closed, avoid breathing vapors and prevent static accumulation
Storage: Store in a cool, ventilated area away from open flames, heat sources, and incompatible materials—especially strong oxidizers
Inside any warehouse, poorly stored PDEB finds its way to create hazards. Containers must stay sealed; leaks lead to vapor buildup, which increases explosion risk. Labeling and a clean storage routine helps keep audits smooth and reduces confusion that turns small mistakes into big issues.
Engineering Controls: Use local exhaust ventilation
Personal Protective Equipment: Chemical-resistant gloves, safety goggles, and suitable clothing
Respiratory Protection: Use approved respirators during spills or in poorly ventilated spaces
For chemical handling, relying on luck or improvisation gets people hurt. Well-maintained fume hoods and personal gear keep vapors from building up, and gloves prevent burns and rashes. In places where masks are ignored, coworkers often pay the price in visits to the doctor.
Appearance: Clear colorless liquid
Odor: Aromatic hydrocarbon smell
Boiling Point: Around 183°C
Melting Point: About -25°C
Flash Point: Near 63°C (closed cup)
Solubility: Insoluble in water; mixes well with organic solvents
A warehouse worker sees PDEB as just another clear liquid, but its flammability and aromatic fumes show up fast in poorly vented labs. Understanding boiling and flash points steers process engineers toward safe operating temperatures, while knowledge of solubility directs fire prevention teams to avoid water hoses and stock up on absorbent granules.
Chemical Stability: Stable under recommended storage conditions
Reactivity: Reacts with strong oxidizing agents
Decomposition Products: Smokes and toxic gases if overheated or burned
Ignoring incompatible chemicals in shared storage leads to dangerous surprises. Keeping PDEB away from peroxides or nitric acid keeps storage areas safer. Good labeling and routine checks for leaking drums nip most stability issues in the bud.
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Potential Effects: Irritation, headaches, dizziness from inhalation, dermatitis from repeated skin contact
Carcinogenicity: Not classified, but impurities like benzene increase cancer risk
People in workplaces with constant exposure begin to notice symptoms before anybody else. Real-life experience shows headaches and nausea pop up quick in areas with poor airflow. Even traces of benzene make material purity checks important.
Toxicity: Harmful to aquatic life, persistent in the environment
Persistence: Not easy to biodegrade
Mobility: Floats on water, spreads widely
Accidental leaks sink into soil or wash into rivers, causing harm long after clean-up seems finished. Sites near waterways need extra containment; real-world releases lead to tailing-camp fish kills and ongoing fines for companies.
Waste Disposal: Burn in approved incinerators with proper emission controls or take to licensed waste processors
Container Disposal: Triple-rinse, puncture, or crush before sending to disposal
Throwing unused PDEB into regular trash turns a minor job into a long-term headache. Dedicated waste streams and certified shipping keep toxic compounds out of landfills and water systems, but only if staff are trained and committed. Poor disposal habits attract big penalties and public scrutiny.
UN Number: 2524
Transport Hazard Class: Flammable Liquid
Packing Group: III
On the road or on the water, clear labeling keeps emergency responders and drivers safe; wrong labels or missing placards bring delays, fines, or worse—unprotected offloading at docks and warehouses. Regular training lowers accident risk and keeps insurance and government agencies satisfied.
OSHA Status: Regulated for occupational exposure
EPA Status: Classified as hazardous substance, subject to restrictions on disposal
Inventory Status: Listed in major chemical inventories
Companies handling PDEB pay attention to government rules because failure means shutdowns or lawsuits. Keeping paperwork current and staying informed about even small regulatory changes prevents piles of fines and business disruptions.
