Sodium methyl paraben is a sodium salt derivative of methyl paraben, commonly used as a preservative in cosmetics, personal care, and pharmaceutical products. It offers broad-spectrum antimicrobial activity, inhibiting the growth of bacteria, mold, and fungi, thus extending product shelf life and maintaining stability. Sodium methyl paraben is often used because it is more soluble in water than methyl paraben, making it suitable for use in aqueous formulations.
Benefits of Sodium Methyl Paraben
- Preservative: Sodium methyl paraben is used to prevent microbial growth in various products, ensuring their safety and longevity.
- Broad-Spectrum Antimicrobial: It is effective against a range of microorganisms, including bacteria and fungi.
- Water Solubility: Its high water solubility makes it suitable for use in aqueous formulations.
- Stabilization: It helps maintain product stability, preventing spoilage and contamination.
Common Uses of Sodium Methyl Paraben
Cosmetics and Personal Care
Sodium methyl paraben is widely used in cosmetics and personal care products as a preservative. Common applications and recommended usage percentages include:
- Creams and Lotions: To prevent bacterial growth and contamination, typically used at 0.1–0.3%
- Shampoos and Conditioners: To ensure product stability, generally used at 0.1–0.2%
- Makeup Products: To extend shelf life and prevent microbial growth, generally used at 0.1–0.3%
Pharmaceuticals
Sodium methyl paraben is used in pharmaceutical products for its preservative properties. Typical applications include:
- Medications and Ointments: To ensure safety and prevent contamination, generally used at 0.1–0.3%
- Liquid Medications: To prevent spoilage and ensure stability, typically used at 0.1–0.3%
Food and Beverages
Sodium methyl paraben is used in the food industry to prevent spoilage and maintain freshness. Common applications include:
- Baked Goods and Snacks: To extend shelf life, typically used at 0.1–0.3%
- Beverages: To prevent microbial growth, generally used at 0.1–0.2%
Product Specifications
- INCI Name: Sodium Methylparaben
- CAS No: 5026-62-0
- Form: White crystalline powder
- Product Type: Preservative
- Usage: Cosmetics, personal care, pharmaceuticals, food
- Purity: Typically 95–99%
- Shelf Life: 2 years or more, depending on storage conditions
Storage and Handling
Store sodium methyl paraben in a cool, dry place, in a sealed container to prevent contamination and moisture absorption. Keep away from direct sunlight to maintain its quality and consistency.