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Citric acid

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

At room temperature, citric acid is in a solid state existing as a crystalline powder.

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. It may also be seen in a form that resembles colorless crystals. It is odorless but possesses a strong, characteristic acidic taste.

Comment on solubility

Solubility of 1-oxopropane-1,2,3-tricarboxylic acid (C6H8O7)

The solubility of 1-oxopropane-1,2,3-tricarboxylic acid, also known as citric acid, is notably influenced by several factors, making it a fascinating compound in the realm of solubility science.

Key Characteristics of Solubility:

  • Highly Soluble in Water: Citric acid is highly soluble in water, with a solubility of approximately 590 g/L at 20°C. This high solubility is attributed to the presence of multiple carboxylic acid groups which can form strong hydrogen bonds with water molecules.
  • Effect of Temperature: The solubility tends to increase with temperature, which is a common characteristic among many ionic and polar compounds.
  • Influence of pH: As a weak organic acid, citric acid's solubility can also be affected by the pH of the solution. It ionizes in more alkaline conditions, enhancing its solubility.
  • Factors Affecting Solubility: Other factors including pressure, molecular interactions, and the presence of other solutes can further influence citric acid's solubility.

In summary: The ability of 1-oxopropane-1,2,3-tricarboxylic acid to dissolve readily in water makes it an invaluable substance in various applications, ranging from culinary to pharmaceutical industries. Understanding its solubility profile can lead to better utilization of this compound in numerous innovative contexts.

Interesting facts

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

1-Oxopropane-1,2,3-tricarboxylic acid, commonly known as citric acid, is a remarkable compound widely known for its role in the metabolic processes of living organisms, particularly in the Krebs cycle, essential for energy production. Here are some captivating points about this multifaceted compound:

  • Natural Occurrence: Citric acid occurs naturally in many fruits and vegetables, particularly citrus fruits such as lemons and limes, where it contributes to their characteristic sour taste.
  • Industrial Applications: Due to its acidic properties, citric acid is employed as a natural preservative in the food industry and is often used to enhance flavor in various food products.
  • Cosmetic Uses: Beyond the kitchen, citric acid is utilized in cosmetic formulations for its exfoliating properties and as a pH adjuster, making products more effective.
  • Biochemical Importance: In biochemistry, citric acid plays a crucial role in the synthesis of metabolites, serving both as an intermediary compound and a functional group in numerous enzymatic reactions.
  • Health Benefits: Citric acid is also recognized for its potential health benefits, including aiding in digestion and acting as an antioxidant, which might help in reducing oxidative stress.

In scientific research, the versatility of citric acid makes it a valuable compound for studying metabolic pathways and environmental processes. As chemists continue to explore its properties and applications, it reinforces the essential interconnectedness between chemistry and everyday life.

The world of citric acid is not only about sour flavors but also about profound biochemical significance!

Synonyms
Oxalosuccinic acid
1948-82-9
1-oxopropane-1,2,3-tricarboxylic acid
oxalosuccinate
UNII-DFK99PW32K
Oxalbernsteinsaeure
DFK99PW32K
CHEBI:7815
(+/-)-OXALOSUCCINIC ACID
OXALOSUCCINIC ACID, (+/-)-
1,2,3-PROPANETRICARBOXYLIC ACID, 1-OXO-
bmse000251
SCHEMBL1052505
DTXSID30862799
C05379
Q424172