Product Name: Aldehyde C-11 Undecylic
Chemical Name: Undecanal
Synonyms: 1-Undecanal, n-Undecanal, Undecyl aldehyde
CAS Number: 112-44-7
Molecular Formula: C11H22O
Recommended Use: Fragrance ingredient, flavoring agent, chemical intermediate
Manufacturer: Refer to your packaging for producer details
Emergency Contact: CHEMTREC 1-800-424-9300 (US)
GHS Classification: Acute Toxicity (Oral) Category 4; Skin Irritation Category 2; Eye Irritation Category 2A; Aquatic Acute Category 2
Label Elements: Signal word: Warning; Pictograms: Exclamation mark, Environmental hazard
Hazard Statements: Harmful if swallowed; Causes skin and serious eye irritation; Toxic to aquatic life
Precautionary Phrases: Avoid breathing vapors; Wear protective gloves, eye and face protection; Wash skin thoroughly after handling; Do not eat, drink, or smoke during use; Prevent release into the environment
Chemical Ingredient: 1-Undecanal
CAS Number: 112-44-7
Concentration: ≥99% by weight
Impurities: Trace amounts of related aldehydes
Inhalation: Move person to fresh air; keep at rest in comfort; seek medical help if symptoms continue
Skin Contact: Remove contaminated clothing; rinse skin with plenty of water; wash with soap and water for at least 15 minutes; seek attention for persistent irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy; continue rinsing; call ophthalmologist if irritation does not subside
Ingestion: Rinse mouth; seek medical care immediately; do not induce vomiting unless advised
Most Important Symptoms: Skin redness, burning eyes, headache, nausea
Special Notes for Physicians: Symptomatic treatment; no specific antidote identified
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, water spray
Unsuitable Extinguishing Media: Strong jets of water may spread the product
Hazards from Combustion: Carbon monoxide, carbon dioxide, potential for other irritating fumes
Protective Equipment: Firefighters need full turn-out gear and self-contained breathing apparatus
Special Hazards: Vapors heavier than air; may travel along surfaces to ignition sources sparking flashback
Advice for Firefighters: Cool containers exposed to heat with water spray from a safe distance
Personal Precautions: Ventilate area; evacuate unnecessary personnel; avoid contact with skin, eyes, and clothing; wear suitable protective gear
Environmental Precautions: Do not let material enter drains, waterways, or soils; notify authorities in case of large spills
Methods for Cleaning Up: Absorb with inert material (sand, earth, vermiculite); sweep or scoop up for disposal; ventilate spill site; wash residue with plenty of water while observing environmental precautions
Other Instructions: Use explosion-proof equipment if cleanup occurs near ignition sources
Safe Handling: Ensure local exhaust or general ventilation; avoid inhaling vapors or contact with skin/eyes; never eat, drink, or smoke in working area; use equipment and tools designed to prevent static discharge
Storage Conditions: Store only in tightly sealed original containers; keep in a cool, dry, well-ventilated place; avoid direct sunlight, heat, ignition sources, oxidizers, and acids; label containers clearly
Occupational Exposure Limits: No established OSHA, ACGIH, or NIOSH exposure limits for undecanal
Engineering Controls: Use local exhaust; maintain eyewash and safety shower near handling areas
Personal Protective Equipment: Chemical splash goggles, gloves impervious to chemicals (nitrile suggested), lab coats or aprons, and respiratory protection if ventilation insufficient
Hygiene Measures: Wash hands and exposed skin before breaks and after handling; change contaminated clothing
Appearance: Colorless to pale yellow liquid
Odor: Characteristic, waxy, citrus-like
Odor Threshold: Not available
pH: Not relevant (neutral organic compound)
Melting Point/Freezing Point: -21 °C
Boiling Point: 232 - 233 °C
Flash Point: 96 °C (Closed cup)
Evaporation Rate: Not available
Flammability: Combustible liquid
Explosive Limit: Not determined
Vapor Pressure: 12 Pa at 20 °C
Vapor Density: 5.3 (air = 1)
Relative Density: 0.83-0.84 g/cm³ at 25 °C
Solubility: Insoluble in water; soluble in organic solvents (alcohols, ethers)
Partition Coefficient (log Kow): 4.34
Auto-ignition Temperature: 220 °C
Decomposition Temperature: Not established
Viscosity: Not available
Chemical Stability: Stable under recommended handling and storage conditions
Reactivity: May react with strong oxidizing agents, acids, bases
Hazardous Reactions: Not known to polymerize spontaneously
Conditions to Avoid: Open flames, sparks, static discharge, direct sunlight, elevated temperatures
Incompatible Materials: Strong acids, oxidizers, bases
Decomposition Products: Burns or decomposes to carbon monoxide, carbon dioxide
Acute Toxicity (Oral): LD50 (rat) approx. 2000 mg/kg
Skin Corrosion/Irritation: Causes irritation with redness or dryness
Serious Eye Damage/Irritation: Causes burning and watering
Respiratory Sensitization: Vapors may irritate nose, throat, lungs
Skin Sensitization: Not conclusively reported
Germ Cell Mutagenicity: No evidence from available data
Carcinogenicity: Not listed by IARC, NTP, or OSHA
Reproductive Toxicity: No determined effects
STOT – Single Exposure: Headache, drowsiness possible at high vapor concentrations
STOT – Repeated Exposure: Not detailed in studies
Aspiration Hazard: Not classified for aspiration toxicity
Ecotoxicity: Harmful to aquatic organisms, may cause long-term adverse effects in aquatic environment
Persistence and Degradability: Expected readily biodegradable in soil and water
Bioaccumulation: High potential based on log Kow value (4.34)
Mobility in Soil: Low water solubility, may adsorb to soils and sediments
Other Adverse Effects: No specific data on ozone depletion, global warming, or photochemical smog contributions
Product Disposal: Manage as hazardous waste; send to licensed chemical incinerator or disposal facility; avoid disposal to sewer or environment
Contaminated Containers: Rinse with suitable solvent and dispose as chemical waste; do not reuse containers for other purposes
Other Remarks: Follow all local, regional, and national regulations for chemical disposal
UN Number: Not classified as dangerous goods by UN recommendations
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not allocated
Packing Group: Not assigned
Transport Label: Not required unless local authority needs
Special Precautions for Transport: Secure packaging against leaks and spills, protect from physical damage, store away from food and feed during transit
TSCA Inventory: Listed
REACH Status: Registered or pre-registered
SARA 313: Not listed
California Proposition 65: This product contains no known chemicals regulated
OSHA Hazardous Chemical: Yes, irritant
EU Classification: Xi (Irritant), N (Dangerous for the environment)
Other Regulations: Comply with local, national, and international chemical safety requirements for handling, storage, and transport
