Product Name: m-Diethylbenzene
Synonyms: 1,3-Diethylbenzene; Diethylbenzene, meta-
Chemical Formula: C10H14
Molecular Weight: 134.22 g/mol
CAS Number: 141-93-5
Product Use: Solvent; Intermediate in Organic Synthesis
Supplier: Check label or safety contact for manufacturer details
Emergency Phone Number: Access local emergency numbers or reach out to supplier
GHS Classification: Flammable Liquids (Category 3); Skin Irritation (Category 2); Eye Irritation (Category 2B); Target Organ Toxicity (Single exposure, Category 3: Narcotic Effects)
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor. Causes skin irritation. Causes eye irritation. May cause drowsiness or dizziness.
Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames, and hot surfaces. Avoid breathing vapor. Use only outdoors or in well-ventilated area. Wear protective gloves and eye protection.
Chemical Name: m-Diethylbenzene
Concentration: ≥ 98%
Impurities: Possible trace of o-Diethylbenzene and p-Diethylbenzene (≤ 2%)
Other Components: No significant non-hazardous additives
Inhalation: Move person to fresh air. Support breathing with oxygen if needed. Seek medical advice if symptoms like dizziness or nausea appear.
Skin Contact: Remove contaminated clothing, rinse area with plenty of water for at least 15 minutes. Seek medical attention if irritation or redness develops.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if possible. Continue rinsing. If irritation persists, get medical help.
Ingestion: Rinse mouth. Do not induce vomiting. Seek immediate medical attention.
Extinguishing Media: Use dry chemical, carbon dioxide, or foam extinguishers. Avoid using water jets, which may spread the fire.
Hazards from Combustion: Decomposition yields carbon monoxide, carbon dioxide, and possibly harmful aromatic hydrocarbons.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing.
Special Procedures: Cool exposed tanks or containers with water spray. Remove containers from fire area if safe.
Personal Precautions: Evacuate area. Wear protective equipment such as gloves, goggles, respirators.
Environmental Precautions: Prevent entry into sewers, drains, surface and ground waters.
Containment and Cleanup: Cover spill with inert absorbent (like sand, vermiculite), scoop up and dispose in approved chemical waste container. Wash area with water after material is picked up.
Reporting: Notify authorities if large quantities enter the environment.
Handling: Avoid contact with skin, eyes, and clothing. Avoid inhaling vapor or mists. Use only in areas with proper ventilation. Do not eat or drink while handling.
Storage: Store in tightly closed, properly labeled containers away from heat sources, direct sunlight, and incompatible materials such as oxidizers.
Incompatibilities: Strong oxidizing agents, acids, halogens.
Other Precautions: Maintain proper grounding of transfer equipment to prevent static discharge.
Exposure Limits: No established OSHA or ACGIH limits for m-Diethylbenzene. Use workplace exposure guidelines for similar aromatic hydrocarbons where available.
Engineering Controls: Use local exhaust or general dilution ventilation to limit fume exposure.
Personal Protective Equipment:
- Respiratory Protection: NIOSH-approved respirator if vapor concentrations are high.
- Skin Protection: Chemical-resistant gloves (nitrile or neoprene).
- Eye Protection: Tight-fitting safety goggles.
- Clothing: Wear long sleeves and closed-toe shoes to limit skin contact.
Hygiene Measures: Wash hands after handling. Prevent static buildup.
Appearance: Colorless liquid
Odor: Aromatic, gasoline-like
Boiling Point: 181-183°C (357-361°F)
Melting Point: -49°C (-56°F)
Flash Point: 61°C (142°F), closed cup
Autoignition Temperature: About 440°C (824°F)
Flammability: Flammable liquid and vapor
Vapor Pressure: ~1.4 mmHg at 20°C
Density: 0.86 g/cm³ at 20°C
Solubility in Water: Insoluble
Solubility in Solvents: Miscible with organic solvents
Viscosity: Low
Chemical Stability: Stable under normal storage, handling, and temperature conditions.
Reactivity: No hazardous reactivity expected during regular use.
Hazardous Reactions: Violent reaction with strong oxidizers can result in fire or explosion.
Conditions to Avoid: Heat, sparks, open flames, static discharge.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, and irritant aromatic vapors on burning.
Likely Routes of Exposure: Inhalation, skin, eye contact, ingestion
Acute Effects: Irritation of skin, eyes, gastrointestinal tract. Inhaling high concentrations may cause central nervous system effects like headache, dizziness, drowsiness, or nausea.
Chronic Effects: Prolonged exposure may lead to dermatitis, respiratory irritation, or liver and kidney concerns.
Carcinogenicity: Not listed by IARC, NTP, or OSHA as carcinogenic.
Mutagenicity: No conclusive data.
Reproductive Toxicity: No established risk.
LD50 (oral, rat): Approx. 3,500 mg/kg
Symptoms: Redness, pain, nausea, drowsiness, headache.
Ecotoxicity: Toxic to aquatic organisms. May cause long-term adverse effects in aquatic environments.
Persistence and Degradability: Partially biodegradable; persists in the environment if released in bulk.
Bioaccumulative Potential: Moderate; tends to accumulate in aquatic organisms.
Mobility in Soil: Low water solubility and high volatility; likely to evaporate from soil surface.
Other Harmful Effects: Volatile organic compound that contributes to smog formation.
Disposal Methods: Send in tightly sealed approved waste containers to licensed waste disposal facility. Comply with all local, state, and national regulations
Contaminated Packaging: Triple rinse and dispose as hazardous waste
Avoid: Release into sewage drains or natural waterways; uncontrolled incineration
UN Number: UN 1993
Proper Shipping Name: Flammable Liquid, N.O.S. (Contains m-Diethylbenzene)
Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Labels: Flammable Liquid
Marine Pollutant: Yes
Special Precautions: Avoid transporting with oxidizers; secure containers
TSCA (USA): Listed
REACH (EU): Registered
OSHA Hazcom Standard: Hazardous
SARA Title III: Not specifically listed under Section 302/304/313
California Proposition 65: Not listed as a carcinogen or reproductive toxicant
WHMIS (Canada): B2 (Flammable Liquid), D2B (Toxic Material Causing Other Effects)
Other Relevant Laws: Follow all applicable local, regional, and national safety and environmental regulations
