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N-Pentadecane CAS 629-62-9

1. Appearance: Colorless liquid. 2. Density (g/mL, 25/4℃): 0.769 3. Standard entropy of liquid phase (J·mol·K): 587.48 4. Melting point (ºC): 9-10 5. Boiling point (ºC, normal pressure): 269-271 6. Critical temperature (K): 434.85 7. Refractive index (nD): 1.4315 ...

Release time：2025-04-27

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N-Pentadecane CAS 629-62-9

1. Appearance: Colorless liquid.

2. Density (g/mL, 25/4℃): 0.769

3. Standard entropy of liquid phase (J·mol·K): 587.48

4. Melting point (ºC): 9-10

5. Boiling point (ºC, normal pressure): 269-271

6. Critical temperature (K): 434.85

7. Refractive index (nD): 1.4315

8. Flash point (ºC): 132

9. Solubility parameter (J·cm): 15.920

10. Standard hot melt of liquid phase (J·mol·K): 470.0

11. Heat of combustion (KJ/mol): Undetermined

12. Critical pressure (MPa): 1.48

13. Critical density (g·cm): 0.220

14. Critical volume (cm·mol): 966

15. Critical compressibility factor: 0.243

16. Eccentricity factor: 0.705

17. Solubility: insoluble in water.

N-pentadecane is a common alkane, which is the basic raw material for the production of long-chain dihydrogen ether, detergents and cosmetics, paints, inks, lubricants, aerosols, plasticizers, high-performance polyamides, phase change materials, organic synthesis intermediates and other products. It is increasingly widely used in the fields of chemical industry, medicine, daily chemicals, light industry, pesticides, liquid crystal materials, etc.

Physical properties

Appearance: Usually a colorless and transparent liquid with good fluidity at room temperature and pressure. This appearance characteristic makes it easy to store, transport and operate in various experimental or industrial application scenarios, such as pipeline transportation and metering addition.

Boiling point: about 270 (there will be some fluctuations under different experimental conditions). The relatively high boiling point indicates that it is less volatile and more stable at room temperature and pressure. However, it can be converted into a gaseous state when heated to near the boiling point, which is convenient for separation and purification by distillation and other means.

Melting point: about 9-10. Its melting point range makes it possible to be solid in a slightly lower temperature environment. As the temperature rises to above the melting point, it will melt into a liquid state. This feature needs to be considered in some applications or storage conditions involving temperature changes.

Density: Generally between 0.76-0.78 (different measurement conditions and other factors will cause slight differences in the value). The density is smaller than that of water, so if it is mixed with water, it will float on the water surface. When it comes to related chemical operations such as stratification and extraction, the substances can be separated according to this feature.

Solubility: It is difficult to dissolve in water and hardly interacts with water; it is soluble in organic solvents, such as benzene, toluene, chloroform, carbon tetrachloride and other non-polar or weakly polar organic solvents. The solubility characteristics make it easy to participate in various organic synthesis reactions, analysis and detection operations, and it is often used as a solvent for organic reactions or used to dissolve other organic compounds.

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