Lactic Acid

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Identification

Molecular formula
C3H6O3
CAS Number
50-21-5
IUPAC Name
2-hydroxypropanoic acid
Molecular Weight
90.08g/mol
Melting Point
(Celsius)
Boiling Point
(Celsius)
Density
1.2090g/cm3
Synonyms
lactic acid
Interesting facts

Interesting Facts about 2-Hydroxypropanoic Acid

2-Hydroxypropanoic acid, commonly known as lactic acid, is a fascinating compound with significant roles in both biochemistry and various industrial applications. Here are some intriguing facts about this remarkable acid:

  • Biological Significance: Lactic acid is produced naturally in the body, primarily during anaerobic respiration. It is a crucial component of the Krebs cycle, which plays a key role in energy production.
  • Fermentation Process: This compound is widely recognized for its role in fermentation. It's produced by certain bacteria during the fermentation of carbohydrates, leading to the delicious tang found in foods like yogurt and pickles.
  • Dual Isomer Forms: Lactic acid exists in two enantiomeric forms: R-(+)-lactic acid and S-(-)-lactic acid. The former is often used in food and cosmetic applications, while the latter is found in sports drinks and minimally processed foods.
  • Used in Skincare: Due to its exfoliating properties and ability to retain moisture, lactic acid is a popular ingredient in many skincare products. It's known for giving skin a fresh, revitalized appearance.
  • Biodegradable Plastics: Lactic acid serves as a starting material for producing polylactic acid (PLA), a biodegradable plastic often used as an eco-friendly alternative in packaging and various disposable products.
  • pH Regulation: In food processing, lactic acid acts as a preservative and pH regulator, helping to maintain product stability and safety.

In summary, 2-hydroxypropanoic acid is not only prevalent in nature but also versatile in its applications across various fields, from food science to environmental sustainability. As the saying goes, “Science is not only a disciple of reason but, also, one of romance and passion," making compounds like lactic acid endlessly fascinating for study and application.

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