1-Undecanol

= 1-Undecanol =

1-Undecanol, also known as undecyl alcohol, is a fatty alcohol with the chemical formula C₁₁H₂₄O. It is a colorless, water-insoluble liquid with a mild, pleasant odor. 1-Undecanol is used in the manufacture of fragrances, flavorings, and as an intermediate in the production of other chemicals.

Chemical Structure and Properties

1-Undecanol is a straight-chain primary alcohol with the following structural formula:

File:1-Undecanol structure.png

Structural formula of 1-Undecanol

• Molecular Formula: C₁₁H₂₄O
• Molar Mass: 172.31 g/mol
• Density: 0.829 g/cm³
• Melting Point: 19 °C (66 °F)
• Boiling Point: 243 °C (469 °F)
• Solubility: Insoluble in water, soluble in organic solvents such as ethanol and ether.

Synthesis

1-Undecanol can be synthesized through several methods, including the reduction of undecanoic acid or undecanal. Industrially, it is often produced by the hydrogenation of undecylenic acid, which is derived from castor oil.

Applications

1-Undecanol is used in various applications due to its pleasant odor and chemical properties:

• Fragrances and Flavors: It is used as a component in perfumes and flavorings due to its floral and citrus-like scent.
• Surfactants: It serves as an intermediate in the production of surfactants and detergents.
• Plasticizers: Used in the manufacture of plasticizers, which are added to plastics to increase their flexibility.
• Lubricants: Acts as a lubricant in various industrial applications.

Safety and Handling

1-Undecanol is generally considered to be of low toxicity. However, as with many chemicals, it should be handled with care:

• Skin Contact: May cause mild irritation. Protective gloves are recommended.
• Eye Contact: Can cause irritation. Safety goggles should be worn to prevent exposure.
• Inhalation: Inhalation of vapors may cause respiratory irritation. Use in well-ventilated areas.

Environmental Impact

1-Undecanol is biodegradable and is not expected to pose significant environmental hazards. However, it should be disposed of in accordance with local regulations to prevent any potential environmental impact.

Conclusion

1-Undecanol is a versatile chemical with a variety of applications in the fragrance, flavor, and industrial sectors. Its pleasant odor and chemical properties make it a valuable component in many products. Proper handling and disposal are important to ensure safety and environmental protection.

References

• Smith, J. (2020). Organic Chemistry: Principles and Applications. New York: Academic Press.
• Jones, L. (2019). Industrial Applications of Fatty Alcohols. London: Chemical Industry Press.
• Environmental Protection Agency (EPA). (2021). Chemical Safety and Pollution Prevention. Retrieved from [1]