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Product Name: Ethylbenzene
Chemical Formula: C8H10
CAS Number: 100-41-4
Synonyms: EB, Phenylethane
Use: Manufacturers use ethylbenzene mainly for styrene production, as a solvent, and as a constituent in fuels.
Supplier: Information should include the manufacturer’s name, address, and emergency contact number for reference during emergencies.
Classification: Flammable liquid, Acute toxicity (oral, inhalation), Eye and skin irritant, Specific target organ toxicity (repeated exposure).
Hazard Statements: Highly flammable liquid and vapor. Harmful if inhaled, swallowed, or if it contacts skin. Causes skin and eye irritation. Suspected of damaging hearing through prolonged exposure. Can cause drowsiness and dizziness. Repeated exposure may cause damage to organs.
Label Elements: GHS pictograms for flame, exclamation mark, and health hazard. Signal word: Danger.
Precautionary Statements: Keep away from ignition sources, use in well-ventilated areas, wear protective equipment, store in securely closed containers.
Chemical Name: Ethylbenzene
Concentration: ≥99%
Impurities: Trace benzene, xylenes, toluene (usually less than 1%)
Special Note: Avoid exposure to mixtures or similar compounds due to potential additive toxicity.
Inhalation: Remove individual to fresh air. Monitor for respiratory distress. If breathing difficulties continue, seek medical attention immediately.
Skin Contact: Take off contaminated clothing. Wash affected area thoroughly with soap and water. Persistent irritation requires medical attention.
Eye Contact: Hold eyelids open and rinse gently with water for at least 15 minutes. Contact a medical provider without delay.
Ingestion: Do not induce vomiting. Rinse mouth with water if the person is conscious. Call poison control or seek medical help right away.
Suitable Extinguishing Media: Use foam, carbon dioxide, or dry chemical for firefighting. Avoid water streams which may scatter the chemical.
Unsuitable Media: Direct water jets spread the fire or cause hazardous runoff.
Hazards: Flammable vapors may form explosive mixtures with air. During combustion, hazardous gases such as carbon monoxide and soot may form.
Firefighter Protection: Wear full protective gear, including self-contained breathing apparatus. Approach containers with caution as they can violently rupture.
Personal Precautions: Evacuate unnecessary personnel. Restrict access to area of spill. Wear chemical-resistant gloves, splash goggles, and respiratory protection for large releases.
Environmental Precautions: Prevent chemical from entering drains, waterways, or soil.
Methods for Containment and Cleanup: Use inert absorbent material for small spills. For large spills, contain with dikes, then transfer into proper containers for disposal. Clean area and ventilate after removal.
Handling: Work in well-ventilated spaces. Avoid breathing vapors. Prevent skin and eye contact. Only use tools and equipment that do not produce sparks.
Storage: Keep in a tightly-sealed container, away from sources of ignition and incompatible substances like oxidizing agents. Store at temperatures below 30°C. Label containers clearly and keep them away from food and drink.
Occupational Exposure Limits: OSHA PEL: 100 ppm, ACGIH TLV: 20 ppm.
Engineering Controls: Mechanical exhaust ventilation, process enclosure, eye wash stations, and emergency showers in work areas.
Personal Protection: Chemical splash goggles, solvent-resistant gloves, flame-resistant clothing, and when necessary, respiratory protection meeting NIOSH standards.
Hygiene Measures: Wash hands before breaks and at end of work. Remove contaminated clothing and clean it before reuse.
Appearance: Colorless liquid
Odor: Sweet, aromatic, gasoline-like
Boiling Point: 136°C
Melting Point: -95°C
Flash Point: 18°C (open cup)
Auto-ignition Temperature: 432°C
Vapor Pressure: 9.53 mmHg at 20°C
Solubility: Practically insoluble in water; readily soluble in organic solvents.
Density: 0.867 g/cm³ at 20°C
Viscosity: Approximately 0.72 mPa·s at 20°C
Partition Coefficient (log Kow): 3.13
Stability: Stable under normal temperature and pressure. Avoid exposure to light, air, and heat.
Incompatible Materials: Strong oxidizers, acids, bases, and halogens.
Hazardous Decomposition: Heating or fire can produce toxic vapors: carbon monoxide, carbon dioxide, and complex hydrocarbons.
Polymerization: Does not spontaneously polymerize.
Likely Routes of Exposure: Inhalation, skin and eye contact, ingestion.
Acute Effects: Central nervous system depression, dizziness, headache, drowsiness, nausea, and vomiting.
Chronic Effects: Prolonged exposure can cause hearing loss, liver and kidney damage. May aggravate pre-existing heart, kidney, liver, or respiratory disorders.
Carcinogenicity: IARC classifies ethylbenzene as possibly carcinogenic to humans (Group 2B).
LD50 (oral, rat): 3,500 mg/kg
LC50 (inhalation, rat, 4h): 17.4 mg/L
Ecotoxicity: Harmful to aquatic life with long lasting effects.
Persistence and Degradability: Moderate persistence in the environment. Biodegradation occurs slowly.
Bioaccumulative Potential: Moderate, based on log Kow and environmental studies.
Mobility in Soil: Moderate potential for movement through soil.
Other Adverse Effects: Vapor may contribute to photochemical smog.
Waste Treatment Methods: Dispose through a licensed chemical waste contractor. Do not discharge into the environment.
Disposal of Contaminated Packaging: Containers must be triple rinsed. Recycle if possible. Material and packaging must follow all local and national regulations.
Special Precautions: Wear protective gear during disposal, and store waste in marked, leak-proof containers until collection.
UN Number: 1175
Proper Shipping Name: Ethylbenzene
Class: 3 (Flammable liquid)
Packing Group: II
Marine Pollutant: Yes
Transport Labels: Flammable liquid.
Special Transport Precautions: Keep containers securely fastened during transit, away from oxidizers and sources of ignition.
OSHA: Substance regulated under the Hazard Communication Standard.
TSCA: Listed in the Toxic Substances Control Act inventory.
SARA Title III: Listed as a hazardous substance under sections 302, 313.
RCRA: Identified as hazardous waste code U133.
California Proposition 65: Recognized as a chemical that may cause cancer.
Other National and International Regulations: Subject to workplace exposure limits in Europe, Canada, and Australia.
