Product Name: Dibenzo-18-Crown-6
Synonyms: DB18C6, Benzo-18-crown-6, Dibenzocrown-6-ether
Chemical Formula: C20H24O6
Molecular Weight: 360.40 g/mol
CAS Number: 14187-32-7
Recommended Use: Ligand for complexation, research and laboratory reagents
Supplier Information: Chemical supply companies, research lab vendors
Emergency Contact: Local emergency services or poison center
Classification: Not classified as hazardous according to GHS criteria
Hazard Statements: Contact with eyes and skin may cause irritation; inhalation of dust may irritate respiratory tract
Pictograms: None generally required
Precautionary Statements: Avoid inhalation, avoid contact with skin, eyes, and clothing
Potential Health Effects: Eye and skin irritation, possible respiratory irritation
Environmental Hazards: No specific hazard identified; avoid uncontrolled release to environment
Chemical Name: Dibenzo-18-Crown-6
Common Name: Dibenzo-18-crown-6 ether
CAS Number: 14187-32-7
EC Number: 238-029-8
Concentration: 100% pure substance for most laboratory samples
Impurities: Trace organic solvents or synthetic byproducts possible in some batches
Inhalation: Move affected person to fresh air; if breathing becomes difficult, seek immediate medical attention
Skin Contact: Remove contaminated clothing; wash skin thoroughly with soap and water
Eye Contact: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing; get medical attention if irritation persists
Ingestion: Rinse mouth with water; do not induce vomiting except on healthcare provider’s advice; seek medical attention if discomfort occurs
Acute Symptoms: Possible mild irritation, coughing, redness of eyes or skin
Note to Physician: Treat symptomatically
Suitable Extinguishing Media: Use dry chemical, CO2, or water spray; use foam for large fires
Unsuitable Extinguishing Media: Strong direct water jet may spread material
Special Hazards: Combustion releases carbon oxides and potentially irritating fumes
Protective Equipment: Firefighters wear self-contained breathing apparatus and protective clothing
Advice for Firefighters: Keep containers cool by spraying with water; avoid breathing vapors
Personal Precautions: Wear gloves, goggles, and dust mask; ventilate area
Environmental Precautions: Prevent further spillage or leakage; avoid runoff to drains and surface waters
Methods for Clean-Up: Sweep up solid product with non-sparking tools; place in closed container for disposal; use damp towels to minimize dust generation
Reference to Other Sections: For disposal, see Disposal Considerations; for personal protection, see Exposure Controls and Personal Protection
Safe Handling: Handle under local exhaust or general ventilation; avoid raising dust; avoid direct contact with eyes or skin
Storage Conditions: Keep container tightly closed in a dry, cool, and well-ventilated place; protect from moisture and incompatible substances
Incompatibilities: Strong oxidizing agents, strong acids
Hygiene Measures: Wash hands after handling; do not eat, drink, or smoke when handling product
Engineering Controls: Use local exhaust ventilation; keep work area clean
Exposure Limits: No occupational exposure limits established
Personal Protective Equipment: Safety goggles, protective gloves (nitrile or latex), lab coat or apron; dust mask recommended when handling powder
Other Protection: Emergency eyewash and safety shower accessible in work area
General Safety Measures: Remove contaminated clothing and wash before reuse
Appearance: White or off-white crystalline powder
Odor: No characteristic odor
Odor Threshold: Not available
pH: Not applicable (insoluble in water)
Melting Point: 172 to 176°C (342 to 349°F)
Boiling Point: Decomposes before boiling
Flash Point: Not available
Flammability: Low flammability risk
Vapor Pressure: Negligible at room temperature
Solubility: Soluble in organic solvents (chloroform, benzene, ether), practically insoluble in water
Partition Coefficient (Log Kow): Not available
Autoignition Temperature: Not available
Decomposition Temperature: Above 200°C
Viscosity: Not applicable (solid substance)
Chemical Stability: Stable under normal handling and storage conditions
Conditions to Avoid: Excess heat, open flames, moisture, direct sunlight
Materials to Avoid: Strong oxidizers, strong acids, some metals
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, other possible toxic fumes during combustion
Reactivity: Not reactive under standard laboratory conditions
Routes of Exposure: Inhalation, skin or eye contact, ingestion
Acute Toxicity: Low acute toxicity expected based on chemical structure and use, no data for LD50 in humans
Skin or Eye Irritation: May induce mild irritation after prolonged or direct exposure
Sensitization: No evidence of skin sensitization reported
Chronic Effects: No evidence of carcinogenicity, mutagenicity, or reproductive toxicity available
Further Information: Standard laboratory hygiene reduces all significant risks; avoid unnecessary exposure
Ecotoxicity: No acute aquatic toxicity data available; low water solubility may limit environmental hazard
Persistence and Degradability: Likely to persist in environment due to low solubility and slow biodegradation
Bioaccumulation Potential: Not expected to bioaccumulate significantly
Mobility in Soil: Minimal mobility due to physical properties
Other Adverse Effects: Avoid discharge into natural waters or soil; keep contained and dispose of properly
Disposal Methods: Collect and place all waste in sealed, labeled containers; dispose according to local, regional, and national regulations
Recommended Treatment: Incinerate under controlled conditions using a licensed chemical waste facility
Contaminated Packaging: Dispose of empty containers or packaging in the same manner as unused material
Precautions: Avoid contamination of water, food supplies, and soil during disposal
UN Number: Not regulated for transport
Transport Hazard Class: Not classified as dangerous for air, sea, or road transport
Packing Group: Not assigned
Environmental Hazards: Not classified as hazardous for transportation due to minimal environmental risk
Special Precautions: Keep tightly closed and properly labeled during transport; protect from moisture and excessive heat
Inventory Listing: Listed in chemical regulatory inventories such as TSCA (USA), EINECS (EU), DSL (Canada), others
Labeling Requirements: Basic chemical safety labeling regarding irritation and proper handling
Regulatory Status: Not subject to specific chemical control legislation for toxic or hazardous substances
Other Relevant Regulations: Comply with all local, state, and national workplace safety regulations when handling and storing the material
