Citric acid

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Identification

Molecular formula
C6H8O7
CAS Number
77-92-9
IUPAC Name
2-hydroxybutane-1,2,3-tricarboxylic acid
Molecular Weight
192.12g/mol
Melting Point
(Celsius)
Boiling Point
(Celsius)
Density
1.6650g/cm3
Synonyms
2-Methylcitric acid
Interesting facts

Interesting Facts about 2-Hydroxybutane-1,2,3-tricarboxylic Acid

2-Hydroxybutane-1,2,3-tricarboxylic acid, more commonly known as citric acid, is a fascinating organic compound with a range of applications and properties that intrigue chemists and biologists alike.

Applications in Daily Life

  • Food Industry: Citric acid is widely used as a natural preservative and flavoring agent in beverages, candies, and other food products.
  • Pharmaceuticals: It plays a crucial role in enhancing the absorption of certain medications and is often included in effervescent formulations.
  • Cosmetics: Due to its acidic nature, citric acid is commonly used in skincare products to adjust pH levels and act as an exfoliant.

Biological Significance

Moreover, citric acid is a key player in metabolic pathways, particularly the citric acid cycle (or Krebs cycle), which is vital for energy production in living organisms. It serves as a crucial intermediate that aids in:

  • Energy generation through the oxidation of carbohydrates, fats, and proteins.
  • Decomposition of nutrients within the mitochondria.

Unique Characteristics

Some notable attributes of 2-hydroxybutane-1,2,3-tricarboxylic acid include:

  • It exhibits a complex structure with multiple carboxyl groups, which contributes to its high acidity.
  • Citric acid can chelate metals, making it useful in various cleaning agents and for removing limescale.
  • Its presence in citrus fruits is why these fruits are often associated with a sharp, tangy flavor.

In summary, 2-hydroxybutane-1,2,3-tricarboxylic acid is not just a compound with diverse practical uses, but also an essential component of biological systems that aids in energy metabolism. Its multifaceted properties make it a compound of great interest across several fields.

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