Overview
Pentadecane, also known as n-pentadecane, is a straight-chain alkane with 15 carbon atoms. It is a colorless, odorless liquid at room temperature and is part of the paraffin series of hydrocarbons. This compound is primarily derived from petroleum refining and is used in various industrial applications due to its stability and inertness. Pentadecane is notable for its role in organic synthesis and as a calibration standard in gas chromatography. Its predictable boiling point and thermal properties make it a reliable reference material in analytical chemistry. Additionally, its low reactivity and high purity make it suitable for specialized lubricant formulations.
Physical and Chemical Properties
Pentadecane exhibits typical alkane characteristics, including low solubility in water and high solubility in nonpolar organic solvents like hexane and toluene. Its density of 0.769 g/cm³ at 20°C is lower than water, and it has a boiling point of 270°C, which is relatively high for its molecular weight. The compound is chemically inert under standard conditions, resisting reactions with acids, bases, and oxidizing agents. However, it can undergo combustion, releasing carbon dioxide and water. Its thermal stability makes it useful in high-temperature applications, though it should be handled with care to avoid fire hazards.
Main Applications
Pentadecane is widely used as a reference standard in gas chromatography due to its well-defined retention time and volatility. It serves as a calibration marker for identifying other hydrocarbons in complex mixtures. In industrial settings, pentadecane is utilized as a component in lubricants and hydraulic fluids, where its thermal stability and low reactivity are advantageous. It also finds use in organic synthesis as a solvent or intermediate for producing more complex molecules. Research laboratories may employ it as a model compound for studying hydrocarbon behavior under various conditions.
Safety and Storage
Although pentadecane is not highly toxic, it should be handled with care to avoid skin irritation or inhalation of vapors. Proper personal protective equipment, including gloves and safety goggles, is recommended when working with this chemical. Storage conditions are critical to maintaining pentadecane's quality and safety. It should be kept in tightly sealed containers in a cool, dry, and well-ventilated area, away from heat sources and open flames. Compatibility with storage materials should be verified, as some plastics may degrade upon prolonged contact with hydrocarbons.
B2B Procurement Guide
When procuring pentadecane for industrial or laboratory use, buyers should specify the required purity level, typically ranging from 95% to 99.9%. Technical-grade material is sufficient for many applications, while analytical-grade is necessary for chromatography. Suppliers should provide certificates of analysis (CoA) and material safety data sheets (MSDS). Bulk purchases may offer cost advantages, but storage capacity and shelf life should be considered. Lead times can vary depending on supplier inventory, so advance planning is advisable for large orders.
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