Chemical Name: N-Hexyltriphenylphosphonium Bromide
CAS Number: 22085-63-6
Synonyms: Hexyltriphenylphosphonium Bromide
Molecular Formula: C24H28BrP
Molecular Weight: 427.36 g/mol
Manufacturer: Chemical supply or research company contact info available upon request
Uses: Intermediate for organic synthesis, phase transfer catalyst in research settings, agent in laboratory-scale reactions
Contact Information: Emergency phone numbers, supplier addresses, and other identifiers available on request or product label
Hazard Classification: Acute toxicity (oral, dermal), skin and eye irritation, environmental hazard – aquatic chronic hazard
Signal Word: Warning
Hazard Statements: May cause skin irritation, eye irritation, harmful if swallowed, toxic to aquatic organisms
Pictograms: Exclamation mark, environment
Precautionary Statements: Avoid breathing dust and inhalation, wash skin thoroughly after handling, wear protective gloves and eye clothing, keep away from open water
Symptoms of Exposure: Burning sensation in eyes or skin, coughing, breathing difficulty, gastrointestinal discomfort, nausea
Chemical Identity: N-Hexyltriphenylphosphonium Bromide
Purity: > 97% as marketed
Component: Triphenylphosphine group (hydrophobic portion), hexyl chain, bromide counterion
Impurities: Trace moisture, minor phosphine oxide derivatives possible from degradation
Inhalation: Remove individual to fresh air, keep comfortable for breathing, medical attention if breathing trouble persists
Skin Contact: Remove contaminated clothing, flush skin with water and mild soap for at least fifteen minutes, seek medical help for irritation or persistent symptoms
Eye Contact: Flush eyes immediately with running water for a minimum of fifteen minutes while lifting lids, remove contact lenses if easy, obtain medical attention
Ingestion: Rinse mouth, do not induce vomiting unless directed by medical personnel, provide water to drink, contact poison control or medical provider
Most Important Symptoms: Eye redness, skin irritation, gastrointestinal upset
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray for cooling containers
Unsuitable Media: Full water jet may result in spread of material
Hazardous Combustion Products: Phosphorus oxides, carbon monoxide, carbon dioxide, bromide vapors
Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective suit
Special Precautions: Avoid inhalation of fumes, cool unaffected containers with water spray, remove personnel from smoke-exposed area
Personal Precautions: Evacuate unnecessary personnel, avoid contact with eyes and skin, ventilate the area
Protective Equipment: Chemical-resistant gloves, safety goggles, dust mask or respirator for dust generation
Environmental Precautions: Prevent material from reaching drains, waterways, or soil
Containment Methods: Cover spill with inert absorbent (sand, vermiculite), gather material into sealable container for disposal
Cleanup Procedures: Wet sweeping to prevent dust, thorough washing of residue from surfaces, disposal of contaminated materials as hazardous waste
Handling: Avoid breathing dust, avoid contact with skin, eyes, and clothing, wash thoroughly after use, maintain adequate ventilation in work area, use proper PPE at all times, minimize dust production and dispersion
Storage: Store in original container tightly closed in a cool, dry, well-ventilated area away from incompatible substances, shield from strong oxidizers and moisture, segregate from acids and bases, keep away from ignition sources, label storage area clearly with hazard notices and emergency instructions
Exposure Limits: No established OSHA, NIOSH, or ACGIH values specific to N-Hexyltriphenylphosphonium Bromide
Engineering Controls: Use chemical fume hood, local exhaust, general area ventilation, appropriate laboratory safety measures
Personal Protective Equipment: Chemical-resistant gloves (nitrile, latex), safety glasses with side shields or chemical splash goggles, lab coat, suitable respiratory protection in dusty conditions or insufficient ventilation
Hygiene Measures: Avoid eating, drinking, or smoking during use, wash hands before breaks and after finishing work, separate contaminated clothing from other laundry
Appearance: White or off-white crystalline solid, may have slight odor
Melting Point: Approximately 230–235°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Solubility: Soluble in water, DMSO, methanol, ethanol
Density: Approx. 1.3 g/cm³
pH: Not available in solution, expected to be neutral to slightly basic
Partition Coefficient (log Kow): Data not available, expected moderate hydrophobicity due to triphenyl substituents
Vapor Pressure: Negligible at ambient temperature
Viscosity: Not applicable (solid form)
Chemical Stability: Stable under recommended handling and storage conditions, sensitive to moisture and high temperature
Possible Hazardous Reactions: May hydrolyze slowly in presence of water, releases phosphine or derivatives on high heat or combustion
Incompatible Materials: Strong oxidizers (peroxides, nitric acid), acids, moisture
Hazardous Decomposition Products: Bromide vapors, phosphorus oxides, carbon oxides
Conditions to Avoid: Excessive heat, sources of ignition, prolonged exposure to moisture or light
Acute Toxicity: Oral and dermal toxicity observed in animal studies with similar phosphonium salts; no detailed LD50 data for this compound found in open literature
Skin/Eye Irritation: Direct contact may trigger redness, burning, or irritation
Respiratory Effects: Dust inhalation may result in coughing, breathing discomfort, aggravation of existing respiratory issues
Chronic Exposure: Repeated or prolonged contact could lead to dermatitis or sensitization
Carcinogenicity/Mutagenicity: Not classified by IARC, NTP, or OSHA, insufficient data
Other Hazards: Ingestion may cause abdominal pain, vomiting, drowsiness, CNS depression at high doses
Aquatic Toxicity: Classified as toxic to aquatic life with long lasting effects, limited biodegradation data for this class of compounds suggests persistence
Mobility: Potential for water mobility due to partial solubility, moderate soil adsorption
Environmental Fate: May bioaccumulate in aquatic organisms through repeated exposure, risk of long-term adverse effects in river or lake ecosystems if not properly contained
Persistence: Slow natural breakdown in the environment, maintains chemical structure under neutral water conditions for days to weeks
Other Information: Reportable spill thresholds required for state or local regulations depending on locale
Disposal Methods: Treat as hazardous waste according to local, state, federal regulations; do not flush to sewer
Container Disposal: Triple-rinse and puncture, dispose of using approved waste handler
Precautions: Do not incinerate closed containers; avoid environmental release; consult waste disposal contractor for large quantities
References: Contact local environmental agency or hazardous waste authority for further advice on compliance and best practices
UN Number: Not governed by UN transport standards under small-lab quantities, consult scale-specific regulations
Transport Hazard Class: Not classified as dangerous for transport under most DOT, IATA, IMDG codes
Proper Shipping Name: N-Hexyltriphenylphosphonium Bromide, or “Laboratory chemicals, n.o.s.” if used in mixtures
Packaging Requirements: Robust, leak-proof packaging, outer container labeled with hazard details and emergency contacts
Special Precautions: Limit movement of opened containers, maintain secure, upright placement during shipment, avoid stacking loads which may crush packaging
OSHA Status: Not specifically regulated under OSHA hazardous chemical rules
TSCA Inventory: Registration status should be reviewed prior to commercial use in the United States
SARA Title III Sections 302/304/313: Not listed under emergency planning or toxic release rules
REACH: European restrictions or authorization may apply depending on intended use, check registrant status with supplier
Other Regulations: Classification for workplace safety based on hazard statements; regional guidelines may require additional labelling or recordkeeping, such as California Prop 65 for known reproductive toxins or carcinogens
Labels and SDS: Chemical users should keep a current copy of this SDS easily accessible for all staff, update when formulating new mixtures or scaling use beyond research
