Sodium 4-Hydroxybenzoate (CAS 114-63-6) Applications
Sodium 4-hydroxybenzoate (Monosodium p-hydroxybenzoate) is a white crystalline organic sodium salt with molecular formula C₇H₅NaO₃ and molecular weight 160.10 g/mol. Due to its excellent water solubility and broad-spectrum antimicrobial activity, it has significant applications in cosmetics, pharmaceuticals, polymer manufacturing, and other industries. This compound serves both as a direct preservative and as an important chemical intermediate for synthesizing p-hydroxybenzoic acid (PHBA) and other paraben esters.
• Cosmetics & Personal Care Industry
Functions as a broad-spectrum antimicrobial preservative, effectively inhibiting bacteria, yeast, and mold growth to extend product shelf life.
Productos finales: Lotions, creams, shampoos, conditioners, body washes, makeup products, shaving products, toothpaste, mouthwash
• Pharmaceutical Applications
Used as an antimicrobial preservative in pharmaceutical excipients to prevent microbial contamination during storage and use. Also serves as a chemical intermediate for synthesizing other active pharmaceutical ingredients or excipients.
Productos finales: Oral solutions, suspensions, topical formulations (creams, ointments, lotions), paraben sodium salt-containing drugs (e.g., Calcitriol, Olanzapine, Temozolomide)
• Polymer & Chemical Manufacturing
Serves as a chemical intermediate for producing p-hydroxybenzoic acid (PHBA). PHBA is a key monomer for manufacturing high-performance liquid crystal polymers (LCPs) widely used in electronics, automotive, and telecommunications industries. Also used for synthesizing other paraben ester compounds.
Productos finales: Liquid crystal polymers, electronic components, automotive parts, 5G communication materials, benzyl paraben
• Food & Beverage Industry
Primarily applied indirectly in food contact materials as an intermediate for PHBA. Related paraben esters (methylparaben, propylparaben) have FDA approval as antifungal agents migrating from food packaging materials.
Productos finales: Food packaging polymers, packaged baked goods, beverage packaging, canned food packaging
Key Technical Advantages: Compared to the parent acid or ester forms, the sodium salt demonstrates significantly enhanced solubility in cold water, simplifying production processes for aqueous formulations without requiring heating or pre-dissolution, thereby saving energy and reducing processing time.
