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Product Name: Sec-Butylbenzene
Chemical Formula: C10H14
Synonyms: 1-Phenyl-2-butane, sec-Butylbenzol
CAS Number: 135-98-8
Recommended Use: Used in chemical synthesis, laboratory research, solvent applications
Manufacturer: Refer to supplier details from the source of purchase
Contact Information: Emergency contact numbers and detailed address information from manufacturer or distributor
Classification: Flammable liquid, harmful by inhalation and if swallowed
Main Hazards: Vapors can form explosive mixtures with air, causes skin and eye irritation, respiratory tract irritation, potential narcotic effects at high exposure
Signal Word: Warning
Hazard Statements: Highly flammable liquid and vapor, may cause drowsiness or dizziness, suspected of causing organ damage at prolonged exposure
Pictograms: Flame, Exclamation Mark
Precautionary Statements: Keep away from heat, sparks, and open flames, avoid breathing vapor, wear eye protection and gloves, use only in well-ventilated areas
Chemical Name: Sec-Butylbenzene
Concentration: 98–100%
Impurities: Toluene, n-Butylbenzene (minor, may be present in technical grades)
CAS Number: 135-98-8
EC Number: 205-236-7
Other Identifiers: UN 2276 (for transport)
Inhalation: Move to fresh air, keep comfortable for breathing, seek medical attention if symptoms develop or persist, watch for headaches, dizziness, and nausea
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, seek medical care for persistent irritation or burns
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, get medical help if irritation continues
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical attention, monitor for chemical pneumonia or CNS effects
Information for Physicians: Treat symptomatically, consider risk of aspiration pneumonia if product has been swallowed
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, use fine water spray for cooling exposed containers
Specific Hazards: Vapors can travel to ignition sources and flash back, combustion produces irritating fumes and carbon oxides, pressurization in heat can rupture containers
Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective clothing
Firefighting Instructions: Fight fire from a safe distance, stay upwind, contain run-off, cool containers exposed to flames with water spray
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, possible phenolic compounds
Personal Precautions: Evacuate area, ventilate, eliminate ignition sources, avoid inhalation, prevent contact with skin and eyes, use appropriate respirators and gloves
Environmental Precautions: Prevent entry into sewers, groundwater, or surface water, contain spills
Methods for Cleanup: Dike and absorb with inert materials like sand or vermiculite, collect in containers for disposal, clean spill area thoroughly, ventilate affected zone
Decontamination: Wash exposed surfaces with water and detergent once bulk material is removed
Handling Guidelines: Use non-sparking tools, ground and bond containers and equipment, avoid inhaling vapor, no eating, drinking, or smoking near use, keep containers closed
Storage Conditions: Store in cool, well-ventilated area away from incompatible substances, keep container tightly sealed, segregate from oxidizers and acids
Transfer Requirements: Use closed systems or local exhaust where applicable, minimize spillage and vapor release
Special Requirements: Store in properly labeled containers that can withstand the chemical’s flammability and volatility
Exposure Limits: No specific OSHA or ACGIH limits established, use good industrial hygiene practices, maintain airborne concentrations as low as possible
Engineering Controls: Use chemical fume hood, explosion-proof ventilation, local exhaust systems
Personal Protective Equipment:
Form: Liquid
Color: Clear, colorless
Odor: Aromatic, similar to other alkylbenzenes
Boiling Point: 175–177°C
Melting Point: –76°C
Flash Point: 52°C (closed cup)
Autoignition Temperature: 440°C
Explosive Limits: Lower: 1.1%, Upper: 6.7% (estimated for similar compounds)
Vapor Pressure: 2.3 mmHg at 25°C
Specific Gravity (20°C): 0.86
Solubility: Practically insoluble in water, soluble in alcohol, ether, and most organic solvents
Viscosity: Not significant at room temperature
Evaporation Rate: Moderate, increases with temperature
Partition Coefficient (n-octanol/water): 4.12
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Reacts with strong oxidizers, acids, and alkali metals
Hazardous Reactions: May form explosive mixtures with air, hazardous polymerization does not occur
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, small amounts of phenolic and benzaldehyde compounds may form at high temperatures
Storage Incompatibility: Keep away from acids, strong bases, oxidizing agents such as nitrates or peroxides
Acute Toxicity: Inhalation can cause respiratory tract irritation, dizziness, headaches; ingestion may affect central nervous system and liver
Skin Irritation: Causes mild to moderate irritation on prolonged or repeated contact
Eye Irritation: Direct contact causes discomfort, redness, and watering
Sensitization: Not considered to be a skin sensitizer based on available data
Chronic Toxicity: Long-term exposure may impact liver or kidney function, limited evidence in animal studies
Carcinogenicity: Not classified as carcinogenic under IARC, NTP, or OSHA
Mutagenicity: No mutagenic effects reported in standard tests
Reproductive Toxicity: No evidence from animal data, avoid unnecessary exposure
Ecotoxicity: Moderately toxic to aquatic organisms, causes long-term adverse effects in the aquatic environment
Persistence and Degradability: Biodegrades slowly in soil and water
Bioaccumulation Potential: Significant bioaccumulation based on octanol-water partition coefficient
Mobility in Soil: Low water solubility and moderate vapor pressure suggest it can volatilize or bind to soil particles
Other Adverse Effects: May disrupt aquatic microorganisms, use barriers to prevent release to water systems
Waste Treatment Methods: Incinerate in chemical incinerator equipped with afterburner and scrubber, follow state, local, and federal regulations
Container Disposal: Rinse empty containers before disposal or recycling, do not reuse containers for food or drink
Precautions: Do not discharge waste into drains or the environment
Disposal Code: Confirm with local waste regulations for proper classification and disposal method
UN Number: 2276
UN Proper Shipping Name: Sec-Butylbenzene
Hazard Class: 3 (Flammable liquids)
Packing Group: III
Label Requirements: Flammable liquid
Marine Pollutant: Not regulated as a marine pollutant but handle with care near waterways
Special Transport Precautions: Secure containers, prevent leakage, keep away from heat sources during transit
Road Transport ADR/RID: Same as above
TSCA (USA): Listed
REACH (EU): Registered
OSHA: Complies with flammable liquid regulations
SARA Title III: Not listed as an extremely hazardous substance
California Prop 65: Not listed
Other International Inventories: Canada DSL, Australia AICS, Japan ENCS: Listed
Labeling Requirements: Flammable, handle with appropriate warnings, environmental hazard statements as per local regulations
