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Product Name: 2-Nitronaphthalene
Chemical Formula: C10H7NO2
Other Names: β-Nitronaphthalene, 2-Naphthylnitro
CAS Number: 581-89-5
Recommended Use: Intermediate in chemical synthesis, dye manufacturing, and research applications.
Supplier Details: Emergency contact and manufacturer address provided on shipping documentation.
Emergency Numbers: Refer to CHEMTREC or local emergency system.
Classification: Acute toxicity (oral, inhalation, dermal), Carcinogen (suspected), Environmental hazard
Pictograms: Skull and crossbones, Environment, Health hazard symbol
Signal Word: Danger
Hazard Statements: Toxic if inhaled or swallowed. Causes damage to organs through prolonged or repeated exposure. Harmful to aquatic life with long-lasting effects.
Precautionary Statements: Do not breathe dust, fumes, or vapors. Wash thoroughly after handling. Avoid release to the environment. Wear protective gear for skin, eyes, and respiratory tract. Seek medical advice if exposed or feeling unwell.
Specific Risks: Chronic exposure links to blood disorders, especially methemoglobinemia. Contact with eyes or skin can cause irritation.
Chemical Name: 2-Nitronaphthalene
CAS Number: 581-89-5
Concentration: 98% or higher
Impurities: Trace amounts of related naphthalene compounds may be present from the manufacturing process. Levels typically less than 2%.
Inhalation: Remove person to fresh air immediately. Keep comfortable for breathing. Seek medical attention for symptoms like headache, dizziness, or cyanosis.
Skin Contact: Remove contaminated clothing. Rinse skin with soap and plenty of water for at least 15 minutes. Get medical help for persistent irritation.
Eye Contact: Rinse eyes cautiously with water for at least 15 minutes, removing contact lenses if possible. Seek immediate medical attention.
Ingestion: Rinse mouth with water if person is conscious. Never give anything by mouth to an unconscious person. Do not induce vomiting. Contact poison control or emergency services.
Advice for Medical Personnel: Monitor for symptoms of methemoglobinemia and treat supportively. Use supplemental oxygen and symptomatic therapy as required.
Suitable Extinguishing Media: Use dry chemical powder, CO2, foam, or water spray.
Unsuitable Media: Do not use strong water streams, since they can spread contamination.
Specific Hazards: Compound may decompose under heat to release toxic gases, including nitrogen oxides and carbon monoxide.
Protective Equipment: Firefighters should wear full protective equipment and self-contained breathing apparatus.
Firefighting Instructions: Evacuate area if safe to do so. Dike fire control water for later disposal. Cool exposed drums.
Personal Precautions: Wear respiratory protection, chemical-resistant gloves, goggles and protective clothing. Avoid contact with skin and eyes.
Environmental Precautions: Prevent further leakage or spillage if safe. Do not allow product to enter drains, sewers, or water bodies.
Spill Cleanup Methods: Avoid generation of dust. Collect spilled material using a method that minimizes dust, such as damp sweeping or vacuuming with HEPA filter. Place collected waste in suitable containers for proper disposal.
Decontamination: Wash area thoroughly with water and detergent. Ventilate area after cleanup.
Handling: Handle only in well-ventilated areas. Do not get on skin or clothing. Wash hands before breaks and immediately after use. Avoid breathing dust or fumes. Use explosion-proof equipment.
Storage Requirements: Store in tightly closed containers in a cool, dry, well-ventilated place out of direct sunlight. Segregate from incompatible materials including strong oxidizers, acids, and reducing agents. Keep container upright to prevent leaks. Post warning signs in storage areas.
Special Provisions: Store away from food, beverages, and animal feed.
Exposure Limits: OSHA PEL and ACGIH TLV available for naphthalene compounds: 10 ppm TWA. No established OSHA standard for 2-nitronaphthalene, use lowest feasible exposure.
Engineering Controls: Provide local exhaust ventilation at points of dust generation. Use process enclosures when feasible. Monitor work environment with appropriate detection systems.
Personal Protective Equipment: Use impervious gloves (such as nitrile), safety goggles, and laboratory coat or coveralls. For dusty conditions or excessive exposure, use NIOSH-approved respirator.
Hygiene Measures: Rinse skin exposed to material thoroughly. Do not eat, drink, or smoke while using material. Offer routine medical monitoring for workers with frequent exposure.
Appearance: Pale yellow to greenish-yellow crystalline solid
Odor: Slightly aromatic
Melting Point: 75 – 79°C (167 – 174°F)
Boiling Point: 306°C (583°F)
Solubility: Practically insoluble in water; soluble in organic solvents such as ethanol and ether
Vapor Pressure: Negligible at room temperature
Density: 1.34 g/cm3
pH: Not applicable in aqueous solutions
Flash Point: 163°C (325°F) (closed cup)
Explosion/Flammability Limits: Data not available
Partition Coefficient (log Kow): 2.9
Autoignition Temperature: Not determined
Decomposition Temperature: Above 250°C, toxic fumes possible.
Chemical Stability: Stable under normal temperatures and pressures.
Hazardous Reactions: Contact with strong acids, bases, oxidizers, or reducing agents can cause hazardous reactions.
Conditions to Avoid: Excessive heat, flames, direct sunlight, moisture.
Incompatible Materials: Strong oxidizing agents, strong bases, reducing agents.
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, and other toxic vapors form if subjected to fire or thermal decomposition.
Acute Toxicity: 2-Nitronaphthalene is toxic by ingestion, inhalation, or skin contact. Oral LD50 (rat): about 890 mg/kg. Prolonged inhalation damages the blood (methemoglobinemia).
Skin/Eye Irritation: Causes irritation on contact or by repeated exposure.
Chronic Effects: Can cause anemia or liver and kidney damage with repeated exposure. Linked with cancer risk based on animal data.
Other Effects: May cause blue tinting of skin (cyanosis), headache, dizziness, shortness of breath. No adequate data on mutagenicity in humans, evidence from animal studies.
Sensitization: No reliable reports on sensitization, but repeated exposure not recommended.
Acute Ecotoxicity: Toxic to aquatic organisms. Can cause long-lasting harmful effects in aquatic environments.
Bioaccumulative Potential: Moderate tendency to accumulate in aquatic organisms based on log Kow (2.9).
Persistence: Degrades slowly in soil and water, can persist for weeks to months depending on condition.
Mobility: Binds strongly to soil. Low mobility in environment. May enter waterways through rain runoff if spilled.
Other Environment Information: Not readily biodegradable. Avoid release to natural water sources. Advise water authorities if large spill occurs.
Waste Treatment Methods: Dispose of as hazardous waste. Use licensed chemical waste contractor for incineration or secure landfill. Flush small residues with copious water and detergent.
Container Disposal: Empty containers retain product residues; handle as hazardous. Do not reuse packaging for any purpose. Puncture and crush before landfilling when allowed.
Precautions: Never discharge into sewage or surface water.
UN Number: 1661
UN Proper Shipping Name: 2-Nitronaphthalene
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II (moderate danger)
Label Required: Toxic
Environmental Hazards: Marine pollutant
Special Precaution for Users: Label containers clearly. Handle with extra care to avoid breakage. Load vehicle to prevent mixing with incompatible cargo.
Transport in Bulk: Not suitable for bulk transport by sea per MARPOL Annex II and IBC Code.
US TSCA: Listed
EPCRA Section 313 (TRI): Subject to reporting for toxic chemicals
OSHA: Regulated as a hazardous substance.
Canada DSL: Listed
Europe: Classified as hazardous under CLP Regulation (EC No 1272/2008).
Other Federal/State Listings: Check local, state, and country regulations; handling and use subject to specific chemical safety requirements.
Worker Protection: Ensure compliance with industrial safety standards for handling hazardous chemicals.
