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Octadecane is a saturated long-chain hydrocarbon belonging to the alkane family.
Octadecane is a straight-chain paraffin with 18 carbon atoms, widely used in research, industrial formulations, and as a standard in analytical chemistry.
Octadecane is valued for its chemical stability, hydrophobicity, and role as a model compound in studies of long-chain hydrocarbons and paraffin waxes.
CAS Number: 593-45-3
EC Number: 209-793-7
Molecular Formula: C18H38
Molecular Weight: 254.50 g/mol
Synonyms: Octadecane, n-Octadecane, n-C18 alkane, CH3(CH2)16CH3, Paraffin hydrocarbon C18, Long-chain alkane C18, Saturated hydrocarbon octadecane, Linear alkane octadecane, Normal octadecane, Octadecyl paraffin, Hydrocarbon solvent standard, Alkane calibration standard, C18 straight-chain hydrocarbon, Octadecane analytical reference, Hydrocarbon model compound octadecane
APPLICATIONS
Octadecane is used as a standard hydrocarbon in analytical chemistry.
Octadecane is incorporated into calibration procedures for gas chromatography.
Octadecane is applied in research to evaluate hydrocarbon retention indices.
Octadecane is used in the study of phase change materials.
Octadecane is incorporated into thermal energy storage systems.
Octadecane is applied in solar heating applications for latent heat storage.
Octadecane is used as a model compound in combustion research.
Octadecane is incorporated into experimental fuels for engine studies.
Octadecane is applied in research to understand hydrocarbon oxidation pathways.
Octadecane is used in the synthesis of surfactants and emulsifiers.
Octadecane is incorporated into alkyl derivatives for industrial applications.
Octadecane is applied in chemical synthesis requiring long-chain hydrocarbons.
Octadecane is used in the cosmetics industry as an emollient.
Octadecane is incorporated into creams for skin-softening properties.
Octadecane is applied in lotions for a smooth and non-greasy texture.
Octadecane is used as a lubricating agent.
Octadecane is incorporated into grease formulations for stability.
Octadecane is applied in specialty lubricants for low-temperature performance.
Octadecane is used in coatings to provide hydrophobic properties.
Octadecane is incorporated into surface treatments for water repellency.
Octadecane is applied in protective films for packaging materials.
Octadecane is used in academic research as a model saturated hydrocarbon.
Octadecane is incorporated into organic chemistry studies.
Octadecane is applied in laboratory experiments involving alkanes.
Octadecane is used in paraffin wax formulations.
Octadecane is incorporated into candle production for improved burning properties.
Octadecane is applied in wax coatings for moisture resistance.
Octadecane is used in the development of organic phase change composites.
Octadecane is incorporated into polymer blends for energy-efficient building materials.
Octadecane is applied in textiles to create temperature-regulating fabrics.
Octadecane is used in the fragrance industry as a carrier substance.
Octadecane is incorporated into perfumery bases for controlled release.
Octadecane is applied in formulations to extend fragrance longevity.
Octadecane is used in pharmaceutical research as an excipient.
Octadecane is incorporated into formulations for controlled drug delivery.
Octadecane is applied in drug coating technologies for stability.
Octadecane is used in agrochemical formulations as a carrier.
Octadecane is incorporated into pesticides for controlled release.
Octadecane is applied in herbicides for improved efficiency.
Octadecane is used in the rubber industry.
Octadecane is incorporated into vulcanization processes.
Octadecane is applied in elastomer modifications for flexibility.
Octadecane is used in nanotechnology as a functionalizing agent.
Octadecane is incorporated into nanoparticle surface modifications.
Octadecane is applied in research for self-assembling systems.
Octadecane is widely used as a calibration standard in gas chromatography for hydrocarbon analysis.
Octadecane is applied in analytical chemistry for retention time calibration of C18 hydrocarbons.
Octadecane is used in petroleum and petrochemical laboratories as a reference alkane.
Octadecane is incorporated into phase change materials (PCMs) for thermal energy storage.
Octadecane is used in heat storage systems due to its high latent heat of fusion.
Octadecane is applied in thermal management for electronics and construction materials.
Octadecane is utilized in paraffin wax formulations to modify melting points.
Octadecane is included in candles and specialty waxes for consistency.
Octadecane is applied in coatings and polishes requiring hydrophobic properties.
Octadecane is used in surfactant and detergent research as a model hydrocarbon.
Octadecane is applied in studies of micelle formation and hydrophobic interactions.
Octadecane is incorporated in colloid and surface chemistry experiments.
Octadecane is utilized in lubrication research as a model for long-chain hydrocarbons.
Octadecane is applied in boundary lubrication studies.
Octadecane is used in tribological research of alkane films.
Octadecane is employed in coatings to impart water-repellent properties.
Octadecane is applied in polymer blends for enhanced hydrophobicity.
Octadecane is used in waterproofing and protective treatments.
Octadecane is incorporated into fuel research as a high-molecular-weight hydrocarbon.
Octadecane is used in combustion studies as a model straight-chain alkane.
Octadecane is applied in diesel and kerosene formulation research.
Octadecane is utilized in pharmaceutical excipient research for hydrophobic carriers.
Octadecane is applied in controlled drug release systems as a wax component.
Octadecane is used in ointments and topical formulations.
Octadecane is incorporated into cosmetic formulations as a consistency modifier.
Octadecane is used in creams and lotions for water resistance.
Octadecane is applied in lip care products for smooth texture.
Octadecane is employed in environmental research as a hydrocarbon tracer.
Octadecane is applied in soil and sediment hydrocarbon studies.
Octadecane is used in biodegradation experiments of alkanes.
DESCRIPTION
Octadecane is a straight-chain alkane hydrocarbon with the molecular formula C18H38.
Octadecane appears as a white crystalline solid or wax-like substance.
Octadecane has a melting point of about 28–30 °C and a boiling point near 317 °C.
Octadecane is insoluble in water but soluble in organic solvents such as ether and benzene.
Octadecane is chemically stable and non-reactive under normal conditions.
Octadecane is classified as a saturated hydrocarbon belonging to the paraffin series.
Octadecane is produced by petroleum refining and paraffin wax processing.
Octadecane is valued for its use as a phase change material in thermal storage systems.
Octadecane exhibits low toxicity and is considered safe for controlled industrial uses.
Octadecane is applied across industries including energy storage, cosmetics, coatings, and research.
Octadecane is a white, waxy crystalline solid at room temperature.
Octadecane is odorless and tasteless, with low volatility.
Octadecane is insoluble in water but soluble in non-polar organic solvents such as hexane, benzene, and chloroform.
Octadecane has a relatively high melting point compared to shorter-chain alkanes.
Octadecane is chemically inert under most conditions.
Octadecane undergoes combustion to release carbon dioxide and water.
Octadecane is stable under normal storage conditions.
Octadecane is considered non-toxic but may cause irritation in contact with skin or eyes.
Octadecane is biodegradable in the environment over time.
Octadecane is often used as a model compound in research on hydrocarbons and paraffin waxes.
PROPERTIES
Chemical Formula: C18H38
Molecular Weight: 254.50 g/mol
Common Name: Octadecane
Appearance: White waxy crystalline solid
Odor: Odorless
Density: ~0.777 g/cm³ at 20°C
Melting Point: 28–30°C
Boiling Point: 316–317°C
Flash Point: ~165°C (closed cup)
Solubility: Insoluble in water; soluble in organic solvents
Reactivity: Stable hydrocarbon; undergoes combustion in air
Chemical Stability: Stable under ambient conditions; inert to weak acids and bases
Storage Temperature: Store at 15–25°C in sealed containers, away from ignition sources
FIRST AID
Inhalation:
If Octadecane vapors or fumes from heating are inhaled, move the person to fresh air.
Seek medical attention if irritation or respiratory discomfort persists.
Provide artificial respiration if breathing stops.
Skin Contact:
Wash skin thoroughly with soap and water after contact with Octadecane.
Seek medical advice if irritation or dryness occurs.
Remove contaminated clothing and wash before reuse.
Eye Contact:
Flush eyes with plenty of water for at least 15 minutes.
Seek immediate medical attention if irritation or redness persists.
Remove contact lenses if present and continue rinsing.
Ingestion:
If Octadecane is swallowed, rinse mouth thoroughly with water.
Do not induce vomiting unless instructed by medical personnel.
Seek medical attention if discomfort occurs.
Note to Physicians:
Treat symptomatically.
Monitor for gastrointestinal irritation.
Provide supportive care as needed.
HANDLING AND STORAGE
Handling:
Personal Protection:
Wear protective gloves and safety glasses when handling Octadecane.
Use protective clothing if prolonged contact is expected.
Ventilation:
Provide adequate ventilation when handling melted Octadecane.
Avoid inhaling fumes from heated material.
Avoidance:
Avoid direct contact with skin, eyes, and clothing.
Do not eat, drink, or smoke while handling Octadecane.
Wash thoroughly after use.
Spill and Leak Procedures:
Allow spilled Octadecane to solidify and collect mechanically.
Absorb melted material with inert absorbents.
Dispose of according to local environmental regulations.
Storage:
Store Octadecane in a cool, dry, and well-ventilated area.
Keep containers tightly closed and protected from heat sources.
Avoid storage near open flames or oxidizing agents.
Handling Cautions:
Prevent release into drains or waterways.
Avoid overheating, which may generate irritating vapors.
Maintain container integrity to preserve product quality.
