What Is Sodium Lactate?
Sodium lactate, the sodium salt of lactic acid, is an odorless or slightly odorous compound that plays a critical role as a natural moisturizing factor in skin care. It’s known for its moisturizing effect, and pH buffering capacity, and is widely used in cosmetics, food additives, and pharmaceuticals. Produced by neutralizing lactic acid from sources like corn starch or sugar radish, sodium lactate is a testament to the versatility of lactic acid derivatives.
Uses of Sodium Lactate
Its application spans cosmetics, for its moisturizing and mild exfoliating effects; the food industry, as acidifiers, pH adjusters, seasonings, and preservatives; and pharmaceuticals, in parenteral and topical preparations, and infusions.
Properties of Sodium Lactate
Sodium lactate balances the properties of organic acid and hydroxyl group, rendering it nearly neutral and safe for the human body regarding pH. It exhibits neither strong acidity nor alkalinity.
Structure of Sodium Lactate
As the sodium salt of lactic acid, sodium lactate showcases the characteristics of hydroxy acids with its -COOH and -OH groups. It’s a key component in the synthesis of polymers like polylactic acid, highlighting its potential in biodegradable plastic production.
Other Information on Sodium Lactate
PH Buffer Solution Containing Sodium Lactate
Integral to quality control in food and cosmetics, sodium lactate serves as a pH buffer, maintaining stability against pH fluctuations. When combined with lactic acid, it forms a lactate buffer, part of a family of buffers including acetate, phosphate, and citrate, ensuring mild acidity and minimal impact on taste.