Product Name: N-Undecane
Chemical Formula: C11H24
CAS Number: 1120-21-4
Synonyms: Undecyl hydride, n-hendecane
Recommended Use: Laboratory chemicals, solvents, reference standards in analysis, and as a calibration standard
Supplier Information: Chemical providers, research supply companies, petroleum refining support
Emergency Phone: Refer to supplier or CHEMTREC
UN Number: UN 2330
Classification: Flammable liquid, acute toxicity – Category 5 (oral and inhalation), aspiration hazard – Category 1, hazardous to the aquatic environment
Signal Word: Danger
Hazard Statements: Highly flammable, may be fatal if swallowed and enters airways, may cause drowsiness or dizziness, harmful if inhaled, toxic to aquatic life
Precautionary Statements: Keep away from ignition sources, avoid inhaling fumes, prevent spillage into water sources, use with adequate ventilation, wear appropriate protective clothing, do not eat, drink or smoke during use, dispose of product according to regulations
Chemical Name: Undecane
Common Name: N-Undecane
PURITY: Minimum 98%
Impurities: C10, C12 hydrocarbons in trace amounts; water content generally below 0.05%
EC Number: 214-300-6
Inhalation: Move person to fresh air, monitor breathing, give oxygen if breathing is difficult, seek medical attention for symptoms like dizziness or headache
Skin Contact: Remove contaminated clothing immediately, wash skin thoroughly with soap and water, seek medical attention if irritation persists
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, remove contact lenses if present, consult a physician if discomfort continues
Ingestion: Rinse mouth with water, do not induce vomiting, call poison control or a physician immediately, risk of aspiration into lungs
Instructions for Physicians: Treat symptomatically; risk of chemical pneumonitis if aspirated
Suitable Extinguishing Media: Foam, dry chemical, CO2, water spray (cooling only)
Unsuitable Media: Direct streams of water may spread flames
Specific Hazards: Vapors can form explosive mixtures with air, may travel long distances to ignition source, combustion forms carbon oxides
Protective Equipment: Self-contained breathing apparatus, full firefighting gear
Firefighting Advice: Use water spray to cool tanks, avoid inhaling vapor or smoke, evacuate personnel from fire area
Personal Precautions: Evacuate unnecessary personnel, keep away ignition sources, ventilate affected area, use personal protective equipment
Environmental Precautions: Prevent entry into drains, soil, or water bodies, notify authorities for large spills
Clean-Up Methods: Absorb spill with inert material such as sand or vermiculite, transfer to a labeled container, clean spill area thoroughly
Disposal of Waste: Dispose according to local and federal regulations, avoid burning in open air
Handling: Use only with adequate ventilation, keep container tightly closed, avoid breathing vapors, earth equipment to prevent static discharge, do not reuse empty containers without thorough cleaning
Storage: Store in a cool, dry, well-ventilated place away from direct sunlight and incompatible materials, segregate from oxidizers, acids and alkalis, keep containers sealed and labeled
Incompatibles: Strong oxidizing agents, acids, halogens
Occupational Exposure Limits: No specific OSHA or ACGIH limits set; minimize exposure as recommended for hydrocarbon solvents
Engineering Controls: Use explosion-proof ventilation, maintain workplace concentrations below flammable limits
Personal Protective Equipment: Chemical-resistant gloves, safety goggles, lab coat or flame-retardant clothing, in case of major exposure use respirator approved for organic vapors
Hygiene Measures: Wash hands after handling, avoid contact with skin and eyes, remove contaminated clothing after work, provide eyewash stations and safety showers
Appearance: Clear, colorless liquid
Odor: Mild, gasoline-like
Boiling Point: 195-197°C
Melting Point: -26°C
Flash Point: 71°C (closed cup)
Auto-Ignition Temperature: 210°C
Explosion Limits: 0.7 – 6.1% (v/v in air)
Vapor Pressure: 1.0 mm Hg at 25°C
Density: 0.74 g/cm3 at 20°C
Solubility in Water: Negligible
Partition Coefficient (log Kow): 6.15
Viscosity: 1.17 mPa·s at 25°C
Stability: Stable under normal use and storage conditions, sensitive to strong acids, oxidizers, and peroxides
Hazardous Reactions: Contact with strong oxidizers may cause fire and explosions
Decomposition Products: Carbon monoxide, carbon dioxide, low-molecular-weight hydrocarbons
Conditions to Avoid: Heat, sparks, open flames, electrostatic discharge
Polymerization: Does not occur
Acute Toxicity: Oral LD50 (rat): >5000 mg/kg; inhalation LC50 (rat): >5 mg/L (4h)
Skin Irritation: Mild irritant to skin
Eye Irritation: Mild irritant
Sensitization: No data indicates sensitization in humans
Repeated Dose Toxicity: Prolonged exposure may cause central nervous system effects, narcosis, and dermatitis
Carcinogenicity: Not evaluated by IARC, not on NTP or OSHA carcinogen lists
Other Effects: Ingestion or aspiration can lead to chemical pneumonitis and lung injury, chronic exposure may affect liver and kidneys
Ecotoxicity: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment due to persistence
Persistence and Degradability: Expected to be biodegradable; hydrocarbon-degrading bacteria present in soil and water can metabolize undecane
Bioaccumulation Potential: High, log Kow indicates potential for bioaccumulation in aquatic organisms
Mobility in Soil: Low to moderate volatility, low solubility leads to limited mobility in soil, tends to partition into sediments
Other Adverse Effects: Spilled material can form surface slicks, reducing oxygen transfer to aquatic life
Waste Disposal Methods: Incinerate only in approved facilities, do not pour down drains or sewers, avoid incineration in open air, consult local and regional regulations for hazardous waste disposal
Container Disposal: Triple rinse empty containers, puncture and recycle where permitted, otherwise dispose of as hazardous waste
Special Precautions: Do not mix with other waste streams, prevent leaks during transportation to disposal sites
UN Number: UN 2330
Proper Shipping Name: Undecanes
Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Label Requirement: Flammable liquid, keep away from heat, handle with care
Environmental Hazards: Marine pollutant for bulk shipments
Special Transport Precautions: Segregate from oxidizing materials, secure containers, follow national and international transport rules
OSHA: Hazardous chemical, covered under Hazard Communication Standard
TSCA: Listed on US Toxic Substances Control Act Inventory
REACH: Registered under European REACH regulations for industrial use
Right-to-Know: Listed in US state lists, such as Massachusetts, New Jersey, Pennsylvania
International Inventory: Included in Canadian DSL/NDSL, Australian AICS
Other Regulations: Subject to classification and labeling under GHS, restrictions apply to shipping in significant quantities
