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Oleic acid

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Identification
Molecular formula
C18H34O2
CAS number
112-80-1
IUPAC name
octadec-9-enoic acid
State
State

At room temperature, oleic acid is typically a clear and oily liquid. It solidifies upon cooling, well below 20 °C, to form fat-like crystals. It is non-volatile and has the characteristic of being a part of natural oils and fats.

Melting point (Celsius)
13.40
Melting point (Kelvin)
286.55
Boiling point (Celsius)
360.00
Boiling point (Kelvin)
633.15
General information
Molecular weight
282.47g/mol
Molar mass
282.4680g/mol
Density
0.8950g/cm3
Appearence

Oleic acid appears as a colorless to pale yellow liquid. It is oily in nature and is a component of many plant oils and animal fats. It may exist as a solid at lower temperatures, forming crystalline structures. Oleic acid has an oily consistency and is insoluble in water but soluble in alcohol and ether.

Comment on solubility

Solubility of Octadec-9-enoic Acid

Octadec-9-enoic acid, commonly known as oleic acid, exhibits notable solubility characteristics that are important for various applications. Here are some key points regarding its solubility:

  • Solvent Range: Octadec-9-enoic acid is moderately soluble in polar solvents such as alcohols and oils, thanks to its long hydrocarbon chain which allows for interactions with hydrophobic environments.
  • Water Solubility: It is insoluble in water at room temperature, primarily due to its hydrophobic nature, making it less compatible with polar solvents.
  • Temperature Influence: As the temperature increases, its solubility in organic solvents rises, which can be critical in industrial processes.
  • Acid-Base Behavior: In the presence of strong bases, oleic acid can form salts which may increase its solubility in aqueous solutions.

In summary, while octadec-9-enoic acid is insoluble in water, its solubility behavior varies significantly in different solvents, marking it as a versatile compound for a wide range of chemical applications.

Interesting facts

Interesting Facts about Octadec-9-enoic Acid

Octadec-9-enoic acid, commonly known as oleic acid, is a fascinating compound that plays a significant role in various biological and industrial processes. Here are some compelling facts about this unsaturated fatty acid:

  • Natural Occurrence: Oleic acid is prevalent in numerous natural sources, most notably in olive oil, which can contain up to 80% of this fatty acid. Other sources include canola oil, peanut oil, and avocados.
  • Biological Importance: This compound is crucial for human health as it contributes to healthy metabolism and may help lower bad cholesterol levels (LDL) while raising good cholesterol (HDL).
  • Cosmetic Uses: Due to its moisturizing properties, oleic acid is commonly used in skin care products. It helps maintain the skin's elasticity and hydration, making it a popular ingredient in creams and lotions.
  • Industrial Applications: Oleic acid is utilized in the production of soaps and detergents. Its emulsifying properties enable the mixing of water and oil, which is essential for many cleaning products.
  • Culinary Uses: As a major fatty acid in cooking oils, oleic acid offers health benefits, enriching the flavor of food while imparting a smooth texture.

In summary, octadec-9-enoic acid is more than just a fatty acid; its diverse applications across health, industry, and culinary fields make it a compound of notable interest. Remember, as the saying goes, "You are what you eat"—and incorporating healthy fatty acids like oleic acid can contribute to overall well-being.

Synonyms
9-octadecenoic acid
Octadec-9-enoic acid
2027-47-6
odorless
Mangrove
n-Octadec-9-ensaure
Oleic acid-ul-13C18
NCIMech_000314
NCIOpen2_008144
Oleic Acid_GurudeebanSatyavani
DTXSID7048118
MLA10082
AKOS030228306
NCI60_042203
SY101012
DB-041119
DB-253685
NS00081299
Q27116668