Product Name: Natural Quinone
Chemical Formula: C6H4O2
Synonyms: Benzoquinone, Cyclohexadienequinone
Recommended Use: Laboratory reagent, intermediate in organic synthesis, dye manufacture, and biochemical research
Manufacturer/Supplier: Listed in product-specific documentation
Emergency Telephone: Refer to local, regional, and national poison control center contact
Classification: Acute toxicity (oral, dermal, inhalation), Eye Irritation, Skin Sensitization
Hazard Pictograms: Skull and crossbones, exclamation mark, corrosion symbol
Signal Word: Danger
Hazard Statements: Toxic if swallowed, harmful by inhalation, causes skin and eye irritation, may cause allergic skin reaction
Precautionary Statements: Do not breathe dust or vapors, wear protective gloves and eye protection, wash hands thoroughly after handling
Chemical Identity: 1,4-Benzoquinone (Quinone)
CAS Number: 106-51-4
EC Number: 203-405-2
Concentration: 97% or higher (remainder: natural impurities)
Other Components: Trace photochemical byproducts, water (rarely exceeds 1%)
Inhalation: Move affected individual to fresh air immediately; provide artificial respiration if breathing has stopped; seek medical attention for respiratory symptoms
Skin Contact: Rinse area with plenty of soap and running water for at least 15 minutes, remove contaminated clothing and shoes, consult a physician
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, seek ophthalmic evaluation
Ingestion: Do not induce vomiting, rinse mouth with water, keep individual calm, obtain immediate medical assistance
Most Important Symptoms: Difficulty breathing, burns, blistering, allergic skin reactions, visual disturbances, gastrointestinal discomfort
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Specific Hazards: Emits toxic fumes upon combustion, including carbon monoxide, carbon dioxide, and organic vapors, may promote fire spread due to oxidizing properties
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing
Firefighting Instructions: Move containers away from fire area if safe, cool affected surfaces with water spray, do not use water jet directly concentrated on burning product
Decomposition Products: Quinone vapors, hydrogen compounds, aromatic oxides
Personal Precautions: Evacuate non-essential personnel, ventilate area, restrict access until cleanup is complete, use appropriate PPE (respirator, gloves, goggles)
Environmental Precautions: Prevent further spillage or leakage, avoid discharge to sewers or waterways, notify authorities of large releases
Cleanup Methods: Contain spill with inert material (sand or earth), collect in proprietary containers, dispose as hazardous waste, wash area with detergent and water
Reference for Other Sections: Refer to Section on disposal and personal protective equipment
Safe Handling Practices: Handle only in adequate ventilation or fume hood, avoid contact with skin, eyes, and clothing, keep containers tightly closed
Storage Requirements: Store in cool, dry, and well-ventilated area, away from heat, open flames, and incompatible substances (alkali, strong reducing agents, metals)
Special Packaging: Use glass, polyethylene, or other approved non-reactive containers, label containers clearly
Hygiene Measures: Wash exposed skin before breaks, at shift end, after handling
Occupational Exposure Limits (OEL): OSHA TWA: 0.1 ppm, ACGIH TLV: 0.1 ppm
Engineering Controls: Use local exhaust ventilation; enclose processes to control vapors or mists
Personal Protective Equipment: NIOSH-approved respirator, chemical-resistant gloves (nitrile, neoprene), safety goggles, laboratory coat
Environmental Exposure: Use closed systems or appropriate work practices to minimize release, monitor exposure routinely
Appearance: Yellow crystalline solid
Odor: Sharp, pungent
Melting Point: 115–116 °C
Boiling Point: 108 °C (sublimes)
Solubility: Moderately soluble in water, miscible with ethanol, ether, acetone
Vapor Pressure: 24 mmHg at 25 °C
pH: Acidic in aqueous solution
Density: 1.32 g/cm³
Partition Coefficient (Log Pow): 0.2
Flash Point: Non-applicable (sublimes before igniting)
Chemical Stability: Stable under recommended storage, may degrade in presence of light or moisture
Conditions to Avoid: High temperatures, direct sunlight, incompatible materials
Incompatible Substances: Reducing agents (sodium thiosulfate, sulfites), alkalis, strong acids, active metals
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, unidentified organic compounds
Polymerization: May undergo hazardous polymerization under inappropriate storage
Acute Toxicity: LD50 (oral, rat): 130 mg/kg; LD50 (dermal, rabbit): 370 mg/kg; LC50 (inhalation, mouse): 200 ppm (4 hr)
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms Following Exposure: Respiratory distress, burns, dermatitis, visual disturbances, headache, nausea
Long-term Effects: Repeated or prolonged exposure can cause skin sensitization, nervous system effects, damage to liver or kidneys
Carcinogenicity: Not classified as carcinogenic by IARC or NTP
Other Data: May interfere with blood cell functions, not proven mutagenic in animal studies
Ecotoxicity: Harmful to aquatic organisms, may cause long-term adverse effects in aquatic environment
Persistence and Degradability: Moderately biodegradable in soil and water, photodegradation possible
Bioaccumulative Potential: Low potential to bioaccumulate
Mobility in Soil: Mobile, may leach into groundwater
Other Adverse Effects: Toxic at low concentrations to fish and invertebrates, disrupts microbial populations in soil
Waste Disposal Methods: Dispose through licensed hazardous waste contractor, follow local, state, and national regulations
Contaminated Packaging: Rinse thoroughly and treat as hazardous waste
Product Reuse: Not recommended once contaminated
Disposal Precautions: Do not allow to enter drains, watercourses, or environment
UN Number: UN2587
Proper Shipping Name: Benzoquinone
Transport Class: 6.1 (Toxic substances)
Packing Group: II
Environmental Hazards: Marine pollutant
Special Precautions: Ensure secure closures, keep container upright, avoid shipping with incompatible cargo
US Regulations: Listed on TSCA inventory, subject to SARA Title III Section 313, RCRA hazardous waste, OSHA hazardous chemical
EU Regulations: REACH registration required, classified as toxic and dangerous for environment (Directive 67/548/EEC)
Canadian Regulations: Listed on DSL/NDSL
Label Elements: Corrosive, toxic pictograms required, hazard and precautionary statements according to GHS
Other Standards: Complies with Chemical Weapons Convention Regulations
