Material Safety Data Sheet: Diphenyl Oxide

Identification

Product Name: Diphenyl Oxide
Synonyms: Diphenyl Ether, Phenyl Ether
Chemical Formula: C₁₂H₁₀O
CAS Number: 101-84-8
Recommended Use: Heat transfer fluid, fragrance, chemical intermediate
Manufacturer: See supplier details in purchasing documentation
Contact Information: Refer to workplace records for local details
Emergency Phone: Local emergency response numbers apply

Hazard Identification

Classification: Flammable liquid (Category 4), Eye Irritation (Category 2A), Skin Irritation (Category 2)
Label Elements: Flammable, Irritant
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause drowsiness or dizziness, harmful to aquatic life
Precautionary Statements: Avoid release to environment, wear protective equipment, keep container tightly closed
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Potential Acute Effects: Irritation to respiratory tract, skin, and eyes; repeated or prolonged exposure may cause redness and dryness

Composition / Information on Ingredients

Chemical Name: Diphenyl Oxide
Concentration: 99% or greater
Molecular Weight: 170.21 g/mol
Impurities: Trace amounts of biphenyl or related compounds possible, generally under 1% total
Other Components: No hazardous stabilizers or additives are noted

First Aid Measures

Inhalation: Move person to fresh air, keep at rest, seek medical attention if symptoms develop
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, medical attention required for persistent irritation
Eye Contact: Rinse with gentle stream of water for 15 minutes, remove contact lenses if present, seek doctor’s advice
Ingestion: Rinse mouth, do not induce vomiting, get immediate medical help
Important Symptoms: Redness, burning sensation, headache, dizziness
Immediate Medical Attention: Recommend monitoring for delayed effects, support respiratory function if needed

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, water spray
Specific Hazards: Vapors heavier than air, may travel to source of ignition
Hazardous Combustion Products: Carbon monoxide, carbon dioxide
Protective Equipment: Use self-contained breathing apparatus, protective clothing
Special Procedures: Cool containers with water, move containers away from fire if safe, avoid inhalation of fumes

Accidental Release Measures

Personal Precautions: Keep unprotected persons away, ventilate area, use personal protective equipment
Environmental Precautions: Avoid discharge to drains, minimize spread using non-combustible absorbents like sand or earth
Containment and Clean-up: Contain spill, collect mechanically, transfer to closed containers for disposal, wash area with water after Collection
Reporting: Follow local notification regulations for significant spills and discharges

Handling and Storage

Handling: Use in well-ventilated areas, avoid breathing vapor, avoid contact with skin and eyes, prevent build-up of static charges
Storage Conditions: Store in tightly closed containers, cool and dry place, keep away from heat, sparks, open flames
Incompatibilities: Strong oxidizers, acids, and bases
Hygiene Practices: Wash hands thoroughly after handling, change contaminated clothes, no eating or drinking at work station

Exposure Controls and Personal Protection

Occupational Exposure Limits: No national exposure limit established; maintain airborne levels as low as possible
Engineering Controls: Local exhaust ventilation, general room ventilation
Personal Protective Equipment: Splash goggles, chemical-resistant gloves (nitrile or neoprene), lab coat or protective coveralls
Respiratory Protection: Approved organic vapor respirator if exposure is likely to exceed occupational limits
Other Controls: Eyewash station and safety shower recommended nearby task area

Physical and Chemical Properties

Appearance: Colorless to pale yellow liquid or solid
Odor: Pleasant, floral
Odor Threshold: Not established
pH: Not applicable (non-aqueous)
Melting Point: 27°C (80°F)
Boiling Point: 258°C (496°F)
Flash Point: 113°C (235°F) (closed cup)
Flammability: Combustible
Vapor Pressure: 0.014 mmHg at 25°C
Vapor Density: 5.9 (Air = 1)
Density: 1.07 g/cm³
Solubility: Insoluble in water; soluble in benzene, ether, alcohol
Partition Coefficient: 4.21 (log P, octanol/water)
Autoignition Temperature: 575°C (1067°F)
Decomposition Temperature: Not specified
Viscosity: Low to moderate depending on temperature
Evaporation Rate: Slow (compared to ether)

Stability and Reactivity

Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Not reactive under normal use
Hazardous Reactions: Can form flammable mixtures with air at elevated temperatures
Conditions to Avoid: Prolonged exposure to heat, sparks, and open flame
Incompatible Materials: Strong oxidizing agents, acids, bases
Decomposition Products: Carbon oxides, phenolic compounds

Toxicological Information

Likely Routes of Exposure: Skin, eyes, inhalation
Acute Toxicity: Oral LD50 (rat) 2930 mg/kg, Dermal LD50 (rabbit) >7940 mg/kg
Skin Corrosion/Irritation: Moderate irritation possible; repeated contact increases risk
Serious Eye Damage/Irritation: Can cause severe irritation
Respiratory Sensitization: Prolonged exposure to vapor can cause headache, drowsiness, or dizziness
Carcinogenicity: No IARC, NTP or OSHA classification
Other Effects: No mutagenic or teratogenic effects reported in current literature
Symptoms from Overexposure: Redness, dryness, dizziness, respiratory tract irritation

Ecological Information

Aquatic Toxicity: Toxic to aquatic organisms at concentrations above environmental exposure levels
Persistence and Degradability: Moderately persistent, slow biodegradation expected
Bioaccumulation Potential: Likely to bioaccumulate in aquatic organisms (log Kow >4)
Mobility in Soil: Low mobility due to low water solubility
Other Adverse Effects: May cause long-term adverse effects in aquatic environments

Disposal Considerations

Waste Disposal Methods: Incineration at approved facility preferred, chemical waste should not be released into drains
Contaminated Packaging: Empty containers must be handled with care due to product residue, follow local disposal laws
Handling Precautions: Do not attempt to process or reuse containers
Special Instructions: Seek local hazardous waste disposal service, consult regional and national regulations for classification

Transport Information

UN Number: 3077
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (Diphenyl oxide)
Transport Hazard Class: 9
Packing Group: III
Environmental Hazards: Classified as marine pollutant
Special Precautions: Prevent spillage during transport, label packages clearly
Regulatory Transport Requirements: Observe all local, regional, national, and international transport regulations for hazardous chemicals

Regulatory Information

US Regulations: Listed on TSCA Inventory, SARA 313: Not subject to reporting, RCRA: Not listed
EU Regulations: REACH registration, meets criteria for hazardous chemical labeling under EU Regulation (EC) No 1272/2008
Other International Status: Listed in most national inventories, subject to workplace exposure controls
Workplace Labeling: Comply with OSHA Hazard Communication Standard in U.S., similar worker protection requirements apply in EU and Asia-Pacific
Restrictions: Not for food, drug, or cosmetic use