Product Name: 2,3-Dimethyl-2,3-diphenylbutane
Chemical Formula: C18H22
CAS Number: 1889-67-4
Intended Use: Intermediate for research, chemical synthesis, laboratory procedures
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Classification: Not considered hazardous under GHS guidelines for most users
Main Hazards: Inhalation of dust may irritate respiratory system; long-term exposure information not fully established; combustion may produce noxious fumes
Acute Effects: May cause mild irritation to skin, eyes, and respiratory tract
Chronic Effects: Not established due to limited toxicity data
Label Elements: No specific hazard symbol required, but standard lab caution advised
Precautionary Statement: Handle with appropriate care; avoid dust generation; keep away from incompatible materials
Chemical Identity: 2,3-Dimethyl-2,3-diphenylbutane
Purity: ≥ 98% (varies with supplier)
Synonyms: 2,3-Bis(phenyl)-2,3-dimethylbutane
Impurities: No hazardous impurities known at typical concentrations
Molecular Weight: 238.36 g/mol
Inhalation: Move to fresh air; if breathing becomes difficult, seek medical attention
Skin Contact: Wash skin thoroughly with soap and water; remove contaminated clothing
Eye Contact: Rinse eye cautiously with plenty of water for several minutes; remove contact lenses if easy to do
Ingestion: Rinse mouth with water; do not induce vomiting; seek medical attention for significant exposure
Most Important Symptoms and Effects: Unlikely to cause severe symptoms; mild irritation possible
Medical Attention: Provide symptomatic and supportive treatment
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray
Unsuitable Media: Direct water stream may scatter material
Specific Hazards: Combustion emits carbon oxides and possible traces of aromatic compounds
Special Fire-Fighting Procedures: Responders should wear self-contained breathing apparatus and protective gear
Fire/Explosion Risk: Dust may present a minimal explosion risk if suspended in air
Decomposition Products: Carbon monoxide, carbon dioxide, benzene derivatives
Personal Precautions: Use gloves, eye protection, and dust mask; ventilate area
Environmental Precautions: Avoid discharge to drains, surface and groundwater
Methods for Clean-Up: Sweep up and place in sealed container; use wet method to reduce dusting
Reference to Other Sections: See Sections 8, 13 (Exposure Controls, Disposal Considerations)
Emergency Procedures: Evacuate non-essential personnel from area
Safe Handling: Use in well-ventilated area, avoid generation of dust; do not ingest or inhale
Hygiene Practices: Wash hands thoroughly after use; avoid contact with skin and eyes
Compatible Storage: Store in cool, dry, well-ventilated location in tightly closed containers
Incompatible Materials: Strong oxidizing agents, acids
Specific Storage Requirements: Away from heat/sparks/open flames
Storage Life: Stable under recommended storage conditions; monitor for degradation
Workplace Exposure Limits: No established occupational exposure limits for this compound
Engineering Controls: Fume hood, local exhaust ventilation recommended
Personal Protective Equipment: Chemical-resistant gloves (nitrile), safety goggles, dust mask or respirator if airborne dust present
Environmental Controls: Use controls to prevent release to environment
General Work Practices: Do not eat, drink or smoke in work area; personal hygiene reduces risk
Appearance: White to off-white crystalline powder
Odor: Faint aromatic odor
Odor Threshold: Not determined
pH: Not applicable (non-aqueous solid)
Melting Point/Range: 172–174 °C
Boiling Point/Range: Data not available
Evaporation Rate: Negligible at room temperature
Flammability: Possibly combustible solid
Explosive Limits: Not determined
Vapor Pressure: Very low at room temperature
Vapor Density: Not applicable
Solubility: Insoluble in water; soluble in organic solvents (ethanol, benzene)
Partition Coefficient: Not determined
Decomposition Temperature: Not specified
Viscosity: Not applicable
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: No hazardous reactivity expected with common materials
Hazardous Reactions: Can react with strong oxidizers producing heat and toxic vapors
Conditions to Avoid: Exposure to open flames, sparks, or strong heat sources
Incompatible Materials: Strong acids, oxidizing agents
Hazardous Decomposition Products: Aromatic hydrocarbons, carbon oxides when burned
Acute Toxicity: No data on LD50/LC50 values; low expected toxicity based on structure
Skin Corrosion/Irritation: May cause minor irritation on prolonged contact
Serious Eye Damage/Irritation: Dust can irritate, rinsing recommended
Respiratory Sensitization: Dust may provoke mild respiratory irritation
Skin Sensitization: Not established, but not commonly expected
Mutagenicity: No mutagenic data available
Carcinogenicity: Not listed by IARC/NTP/OSHA
Reproductive Toxicity: No studies available
Long-Term Effects: Lack of research leaves long-term risks unclear
Exposure Routes: Inhalation, skin and eye contact, ingestion
Ecotoxicity: No detailed studies; low water solubility suggests minimal aquatic exposure
Persistence and Degradability: Not readily biodegradable; possible environmental persistence
Bioaccumulation Potential: May bioaccumulate due to hydrophobic structure
Mobility in Soil: Low solubility suggests limited mobility, likely to adsorb to soil
Other Adverse Effects: No known significant ecosystem hazards
Precautions: Prevent entry to waterways or soil
Waste Disposal Methods: Collect material as chemical waste; incinerate in approved facility if possible
Container Disposal: Rinse thoroughly before discarding or recycling containers
Special Precautions: Avoid release to sewer or environment
Disposal Regulations: Comply with all local, regional, and national regulations
UN Number: Not assigned
Transport Hazard Class: Not regulated for transport by air, rail, sea, or road
Packing Group: Not regulated
Proper Shipping Name: Not hazardous
Special Precautions for Transport: Ensure containers remain sealed and upright, shield from excessive heat and moisture
Environmental Hazards: Avoid spillage on transport routes
TSCA (US): Listed or can be used for research and development purposes
DSL/NDSL (Canada): Confirm compliance for imported quantities
EINECS/ELINCS (Europe): Notified/not typically listed due to research use
WHMIS (Canada): Non-controlled, lab use only
REACH (EU): May require registration above threshold volumes
Customs or Industry-Specific Regulation: Chemical hygiene plan and laboratory standards apply, best to review local workplace safety laws
