Understanding the fundamental chemical properties of lactic acid is key to appreciating its widespread use across diverse industries. As a vital lactic acid synthesis material, its molecular structure, reactivity, and physical characteristics dictate its performance in everything from food preservation to advanced chemical manufacturing. NINGBO INNO PHARMCHEM CO.,LTD. provides high-purity lactic acid, enabling clients to leverage these properties effectively.

Lactic acid, with the chemical formula C3H6O3 and CAS number 50-21-5, is an alpha-hydroxy acid. Its structure contains both a carboxyl group (-COOH) and a hydroxyl group (-OH) attached to the same carbon atom. This bifunctionality is central to its versatility as a lactic acid synthesis material. The carboxyl group imparts its acidic nature, with a pKa of approximately 3.08 at 100°C, allowing it to function as an effective acidulant and pH regulator. This acidity is crucial for its role in food preservation, inhibiting microbial growth.

Physically, lactic acid is known for its miscibility with water and ethanol, owing to the polar hydroxyl and carboxyl groups that can form hydrogen bonds. While often encountered as a syrup in concentrated forms, it can also exist as a solid. The stated melting point of 18°C suggests it can be handled as a solid under cooler conditions, but it readily forms a viscous liquid. Its density, approximately 1.209 g/mL at 25°C, is another important parameter for industrial handling and formulation calculations.

The reactivity of lactic acid, particularly its ability to undergo esterification and polymerization, is what makes it a sought-after lactic acid synthesis material. The hydroxyl group can react with carboxylic acids to form esters, and when polymerized, it yields polylactic acid (PLA). The purity of the lactic acid, such as the food grade quality offered by NINGBO INNO PHARMCHEM CO.,LTD., directly impacts the success of these reactions and the properties of the resulting products. When you buy lactic acid 50-21-5 from a reputable supplier, you ensure these critical chemical properties are maintained.

For chemists and manufacturers, a thorough understanding of lactic acid chemical properties is essential for optimizing its use. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing detailed information and high-quality lactic acid synthesis material to support your innovative applications.