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Product Name: 2,7-Dihydroxynaphthalene
Chemical Formula: C10H8O2
Synonym: 2,7-Naphthalenediol
CAS Number: 582-17-2
Recommended Use: Research, organic synthesis, dye intermediates
Manufacturer/Supplier: Laboratory chemical suppliers and specialty chemical companies
Contact Information: Emergency phone lines listed on supplier's label, relevant regulatory body notifications
GHS Classification: Irritant, harmful if swallowed, slight risk to eyes and skin
Pictogram: Exclamation mark indicating irritation risk
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, harmful if inhaled or ingested
Precautionary Statements: Avoid breathing dust or fumes, wash exposed areas thoroughly after handling, keep container tightly closed
Chemical Name: 2,7-Dihydroxynaphthalene
Common Name: Naphthalene-2,7-diol
Purity: 97% or higher (typical for laboratory grade)
Impurities: Trace naphthalene derivatives, water
Eye Contact: Rinse gently with plenty of water for at least 15 minutes, seek medical attention if irritation persists
Skin Contact: Remove contaminated clothing, rinse skin generously with water and soap
Inhalation: Move to fresh air, keep comfortable for breathing, obtain professional medical assistance especially if symptoms develop
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical help immediately
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam, water spray
Special Hazards: Produces carbon oxides when burned, may emit irritating fumes
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing
Advice for Firefighters: Avoid inhaling combustion gases, keep upwind of fire, use water spray to cool containers
Personal Precautions: Use protective gear, avoid creating dust, ventilate area
Environmental Precautions: Prevent release into sewers, soil, and waterways
Cleanup Methods: Sweep up, place in suitable labeled containers, rinse area with water, dispose of collected waste consistent with regulations
Handling: Avoid contact with skin and eyes, avoid inhaling dust or fumes, always work in a ventilated space or fume hood
Hygienic Practices: Wash hands thoroughly after use, do not eat or drink in working area
Storage: Store in a tightly closed container, in a cool, dry, and well-ventilated location, protect from direct sunlight, keep away from incompatible substances like strong oxidizing reagents
Storage Temperature: Room temperature recommended, away from heat sources
Engineering Controls: Use chemical fume hood or local exhaust ventilation
Personal Protection: Wear safety goggles, lab coat, protective gloves (nitrile or neoprene), dust mask for powder handling
Exposure Limits: No specific occupational limits published, minimize exposure by best laboratory safety practices
Respiratory Protection: Use NIOSH-approved mask or respirator if dust is generated
Environmental Exposure Controls: Minimize emissions to the environment, follow regulations for exhaust filtration
Appearance: Pale brown to buff powder or crystalline solid
Odor: Faint, phenolic smell
Molecular Weight: 160.17 g/mol
Melting Point: 277°C–283°C
Boiling Point: Not available due to decomposition
Solubility: Slightly soluble in water, soluble in ethanol and ether
Density: 1.408 g/cm³
pH: Not applicable in solid form
Vapor Pressure: Negligible at room temperature
Flash Point: Not combustible in standard laboratory conditions
Stability: Stable under recommended storage conditions
Reactivity: May react with strong oxidizing agents
Hazardous Reactions: No dangerous reactions known under regular use
Decomposition Products: Emits carbon monoxide, carbon dioxide, and potentially irritating phenolic vapors on thermal decomposition
Conditions to Avoid: High temperatures, moisture, and contact with incompatible materials
Possible Routes of Exposure: Inhalation, skin and eye contact, ingestion
Symptoms: Irritation of eyes, skin, respiratory tract, gastrointestinal upset if swallowed
Acute Toxicity: Oral LD50 in rats estimated to be greater than 500 mg/kg
Chronic Effects: Prolonged exposures may cause adverse effects to organ systems
Carcinogenicity: Not classified as carcinogenic by major regulatory agencies
Additional Information: Lack of comprehensive toxicological data, handle with care and avoid repeat exposures
Ecotoxicity: Limited data available, potential risk to aquatic organisms at high concentrations
Persistence and Degradability: May degrade slowly via photolysis in the environment
Bioaccumulation Potential: Unlikely to bioaccumulate significantly due to low solubility
Mobility in Soil: Low due to limited water solubility
Other Adverse Effects: Avoid uncontrolled environmental releases, report spills to appropriate agencies where required
Disposal Methods: Collect and seal in robust, labeled containers, send to professional chemical disposal facilities
Contaminated Packaging: Rinse, triple-clean before recycling or disposal if regulations allow
Regulatory Disposal Codes: Refer to local hazardous waste management codes, such as US EPA RCRA or EU waste codes
Special Precautions: Do not dispose alongside ordinary household waste, do not pour down the drain
UN Number: Not assigned for this chemical
Transport Hazard Class: Not regulated as hazardous for road, air, or sea transport in most jurisdictions
Packing Group: None assigned
Label Requirements: Ensure container integrity and labeling per standard laboratory transport policies
Special Precautions: Prevent movement or shock, secure origination and destination documentation
Safety, Health, and Environmental Regulations: Not specifically listed under US TSCA, EU REACH, or Canada DSL/NDSL as a major hazard but local handling and workplace exposure controls apply
Risk Phrases: R36/38: Irritating to eyes and skin
Safety Phrases: S26: In case of contact with eyes, rinse immediately; S36/37/39: Wear suitable protective clothing, gloves, and eye/face protection
Inventory Listings: Confirm notification and compliance with country-specific chemical inventories
Other Regulatory Requirements: Maintain compliance with occupational exposure and hazardous material guidelines, retain safety documentation and training records
