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Name: 1,4-Diethylbenzene
Synonyms: p-Diethylbenzene, p-Ethylbenzene
Chemical Formula: C10H14
Molecular Weight: 134.22 g/mol
Appearance: Colorless liquid
Odor: Aromatic, sweet fragrance often associated with solvents or fuels
Common Uses: Commonly used as a chemical intermediate, especially in the production of polyesters, resins, and specialty chemicals
Health Hazards: Can irritate eyes, skin, and respiratory tract with prolonged or repeated exposure. Shortness of breath and dizziness can accompany high vapor levels. Not considered a major carcinogen but long-term exposure to hydrocarbons brings potential risks for organ toxicity.
Fire Hazards: Highly flammable with a low flash point. Vapors form explosive mixtures with air. Spills can easily ignite from static electricity or nearby flames.
Environmental Hazards: Toxic to aquatic life in concentrated spills. Slow breakdown in soil or water. Persistent when not properly managed.
Label Elements: Signal word "Danger" assigned to highly flammable liquids.
Main Ingredient: 1,4-Diethylbenzene at purity often above 98 percent.
Impurities: May include other diethylbenzene isomers, trace solvents, or manufacturing residuals in minute concentrations.
Inhalation: Move to fresh air if breathing vapors or fumes. If symptoms persist, seek medical attention. Oxygen may help those who feel short of breath.
Skin Contact: Wash immediately with soap and flowing water. Remove contaminated clothing.
Eye Contact: Rinse thoroughly for several minutes with cool running water and lift lids occasionally. Medical care is essential for persistent irritation.
Ingestion: Rinse mouth and get immediate assistance. Do not attempt to force vomiting unless instructed by poison control professionals.
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide.
Unsuitable Media: Water jet tends to spread flammable liquid fires.
Fire Hazards: Containers heat rapidly and may rupture in a fire, launching material with force. Combustion generates irritating fumes and sometimes toxic gases.
Protective Equipment: Full firefighter turnout gear with breathing apparatus recommended.
Special Precautions: If possible, quickly remove containers from fire area and cool with water spray to prevent rupture.
Personal Protection: No one should touch the liquid or inhale vapors without proper gloves and masks.
Containment: Block off spill, prevent from flowing into waterways, drains, or soil by using sand or earth to build barriers.
Cleanup: Absorb with inert material, such as sand or vermiculite, and place in closed containers for safe disposal.
Ventilation: Increase airflow since vapors can build up in low or confined spaces.
Handling: Only work with 1,4-Diethylbenzene in well-ventilated spaces to limit fume buildup. Ground and bond containers to prevent ignition by static charges.
Storage: Store away from heat, sparks, open flames, and strong oxidizers in tightly sealed containers.
Incompatibility: Strong oxidizers such as peroxides or chlorine compounds can lead to rapid decomposition or fire.
Engineering Controls: Rely on fume hoods and mechanical ventilation whenever possible.
Personal Protective Equipment (PPE): Wear splash goggles, nitrile or neoprene gloves, chemical-resistant aprons, and, if vapor levels are high, use respirators.
Exposure Limits: No specific regulatory threshold set for 1,4-Diethylbenzene, but limits for generic hydrocarbon solvents should guide decisions.
State: Liquid at room temperature
Boiling Point: Ranges near 184-186°C
Melting Point: Around -43°C
Flash Point: Approximately 60°C
Solubility: Practically insoluble in water, mixes well with many organic solvents
Vapor Pressure: Moderate for an aromatic hydrocarbon
Density: Around 0.86 g/cm³
Odor Threshold: Recognizable at low concentrations, especially in unventilated spaces
Chemical Stability: Stable under normal conditions of use.
Reactive with: Strong oxidizers, acids, halogens, and peroxides.
Hazardous Decomposition Products: Can form carbon monoxide, carbon dioxide, and unidentified hydrocarbons with incomplete combustion.
Polymerization: No dangerous polymerization reported.
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion.
Acute Effects: Irritation to skin and eyes, minor narcotic effects such as dizziness.
Chronic Effects: Longer-term exposure can damage the liver or kidneys based on studies of similar hydrocarbons. Data do not suggest significant cancer risk, but continued caution remains wise.
Sensitization: No data showing allergic sensitization. Individual reactions may vary with sensitivity.
Mutagenicity/Teratogenicity: No strong evidence available for genetic mutations or birth defects tied directly to this compound.
Aquatic Toxicity: Harmful to fish and aquatic organisms in excess. Not easily removed from water by natural breakdown.
Mobility: Spreads rapidly across surface water due to its low density and insolubility.
Persistence: Breakdown in soil or water runs slowly. Sunlight or microbes eventually degrade it, but concentrated spills linger.
Bioaccumulation: Limited data, though structurally similar compounds tend to store in fatty tissues of aquatic life.
Waste Treatment: Dispose of large or concentrated amounts through licensed hazardous waste handlers. Dilute remnants should never enter sewers or open water.
Container Handling: Empty packages can retain liquid and vapors, so triple-rinse and puncture before sending to recycling facilities whenever possible.
Regulation: Local and federal regulations often require specific incineration for safety due to its persistence and fire risk.
Regulated Status: Classified as a flammable liquid for shipping by road, rail, and sea.
UN Number: Assigned for safe tracking in transport.
Packing Group: Categorized under medium hazard due to ignition and toxic concerns.
Special Precautions: Keep away from oxidizers in mixed shipments. Use only with carriers trained in hazardous chemical safety.
Regional Regulations: Listed as hazardous by agencies that track volatile organic compounds or environmental toxins.
Workplace Standards: Occupational safety groups recommend engineering controls and PPE for workers regularly exposed to aromatic hydrocarbons.
Reporting Obligations: Significant spills or leaks typically require prompt notification to environmental authorities.
