How Sodium Lactate Functions as a Humectant, Buffer, and Preservative Across Industries
Introduction
Sodium Lactate is the sodium salt of lactic acid, known for its versatile roles in food preservation, cosmetics, pharmaceuticals, and industrial applications. It is widely used as a humectant, pH buffer, and antimicrobial agent, offering both functional and safety benefits.
Product Information
Chemical Name: Sodium Lactate
Molecular Formula: C₃H₅NaO₃
Appearance: Colorless to pale yellow liquid or crystalline solid
Solubility: Highly soluble in water
CAS Number: 72-17-3
Key Features
Excellent humectant for skin hydration
Effective pH regulator and buffering agent
Widely used as a natural preservative in meat processing
️ Improves antimicrobial protection in formulations
Biodegradable and safe for various applications
Applications
| Industry | Function | Examples |
|---|---|---|
| Food & Beverage | Preservative and humectant | Processed meats, bakery, beverages |
| Cosmetics & Personal Care | Skin hydration and pH control | Lotions, creams, soaps, body washes |
| Pharmaceuticals | pH adjuster and electrolyte source | IV fluids, oral rehydration solutions |
| Industrial | Corrosion inhibitor and chemical buffer | Metal processing, chemical formulations |
Mode of Action
Sodium lactate works by binding water molecules to enhance hydration and regulating pH to stabilize formulations. In food, it inhibits microbial growth, extending shelf life, particularly in meat and dairy products.
Advantages
✅ Safe, biodegradable, and naturally derived
✅ Multifunctional across industries
✅ Improves moisture retention in skin and foods
✅ Cost-effective and widely available
Limitations
❌ High concentrations may cause tackiness in cosmetics
❌ Requires precise dosing in food for regulatory compliance
❌ Can impart a slight salty taste in some formulations
FAQs
Q: Is sodium lactate safe for skin?
A: Yes, it is widely used in moisturizers and is known to enhance skin hydration without irritation.
Q: Why is sodium lactate used in meat products?
A: It reduces microbial growth and improves moisture retention, enhancing shelf life and juiciness.
Q: Can sodium lactate be used in pharmaceuticals?
A: Yes, it is used as a pH buffer and electrolyte source in IV and oral solutions.
Conclusion
Sodium Lactate is a multifunctional ingredient valued for its hydrating, buffering, and antimicrobial properties, making it a key component in food, cosmetics, pharmaceuticals, and industrial formulations. Its natural origin and safety profile ensure broad acceptance across regulated markets.
Free Consultation
Name*
E-Mail*
TEL
Message*