Skip to main content

Citric acid

ADVERTISEMENT
Identification
Molecular formula
C6H8O7
CAS number
77-92-9
IUPAC name
but-2-ene-1,2,3-tricarboxylic acid
State
State

Citric acid is typically found as a solid at room temperature, usually in the form of crystalline powder or granules, widely used due to its solubility in water, which contributes to its popularity in culinary and pharmaceutical applications.

Melting point (Celsius)
153.00
Melting point (Kelvin)
426.15
Boiling point (Celsius)
310.00
Boiling point (Kelvin)
583.15
General information
Molecular weight
192.12g/mol
Molar mass
192.1240g/mol
Density
1.6650g/cm3
Appearence

Citric acid appears as a white, crystalline powder or granular form. It is commonly found as colorless crystals. It is both odorless and has a strongly acidic taste, consistent with its use in food as a flavoring and preservative.

Comment on solubility

Solubility of But-2-ene-1,2,3-tricarboxylic Acid

But-2-ene-1,2,3-tricarboxylic acid, also known as C6H8O7, exhibits notable solubility characteristics that are of interest in various chemical contexts. This compound is classified as a tricarboxylic acid due to the presence of three carboxylic acid (-COOH) functional groups. Its solubility can be influenced by several factors:

  • Polarity: Due to the three carboxyl groups, but-2-ene-1,2,3-tricarboxylic acid is highly polar, which typically enhances solubility in polar solvents such as water.
  • Hydrogen Bonding: The ability of the -COOH groups to form hydrogen bonds with water molecules further contributes to its solubility, as these interactions facilitate the dissolution process.
  • pH Influences: As an acid, the solubility can also be enhanced in basic solutions where deprotonation occurs, resulting in negatively charged carboxylate ions that are more soluble in aqueous environments.

In contrast to many organic compounds, one may say that “the more the merrier” when it comes to carboxylic groups and their solubility. It is interesting to note that the solubility can also vary depending on temperature, concentration, and the presence of other ions in solution.

In summary, the solubility of but-2-ene-1,2,3-tricarboxylic acid in water is relatively high due to its polar nature, ability to form hydrogen bonds, and the influence of pH on its ionic form. As we explore this compound further, it becomes apparent that its solubility behaviors underscore the intricate relationship between molecular structure and solvent interactions.

Interesting facts

Interesting Facts about But-2-ene-1,2,3-tricarboxylic Acid

But-2-ene-1,2,3-tricarboxylic acid, often referred to as citric acid in its more commonly known form, is a fascinating compound with a wide array of applications and significance in both nature and industry. Here are some remarkable aspects of this tricarboxylic acid:

  • Biochemical Role: Citric acid plays a crucial role in the Krebs cycle, a fundamental metabolic pathway that produces energy in aerobic organisms. This cycle is essential for the conversion of carbohydrates, fats, and proteins into energy.
  • Natural Occurrence: This acid is abundantly found in citrus fruits such as lemons and limes, contributing to their characteristic sour flavor. Its presence in these fruits is not just for taste; it also serves various functions including preservation and detoxification in plants.
  • Industrial Applications: But-2-ene-1,2,3-tricarboxylic acid is widely used in food and beverage industries as a natural preservative and flavor enhancer. In addition, it has applications in the production of cleaning agents, cosmetics, and even in pharmaceuticals.
  • Environmental Impact: As a biodegradable compound, citric acid poses less environmental risk compared to synthetic alternatives. Its natural origins make it a preferred choice for products aimed at sustainability.
  • Analytical Chemistry: In laboratory settings, but-2-ene-1,2,3-tricarboxylic acid is used in various analytical methods, including chromatography, owing to its ability to form complexes with metal ions.

In summary, but-2-ene-1,2,3-tricarboxylic acid is a versatile compound that is not only vital in biological systems but also serves numerous functions across different industries. Its ubiquitous presence in nature coupled with its practical applications makes it a compelling subject of study for chemists and biologists alike!

Synonyms
methylaconitic acid
but-2-ene-1,2,3-tricarboxylic acid
SCHEMBL1333039
DTXSID70863684