Propylparaben

Product Description

Propylparaben is a high-purity crystalline preservative manufactured in our dedicated facility to provide exceptional antimicrobial protection for complex cosmetic formulations. As a specialized n-propyl ester of p-hydroxybenzoic acid, it functions by disrupting microbial membrane transport and inhibiting essential enzymatic activities in fungi and bacteria. This classic preservative remains a commercially vital solution for global formulators due to its proven efficacy at low concentrations and its indispensable role in extending the shelf life of premium personal care products.

Product Specification

• INCI Name: Propylparaben
• CAS No.: 94-13-3
• Chemical Name: Propyl 4-hydroxybenzoate
• Product Type: Preservative / Chemical
• Appearance: White crystalline powder
• Purity (Assay): ≥ 99.0%
• Melting Point: 95.0℃ - 98.0℃
• Solubility: Soluble in ethanol and ether; slightly soluble in water

Key Benefits & Applications

• Broad-Spectrum Efficacy: Exhibits potent fungicidal and bactericidal activity, particularly effective against molds and yeasts that commonly compromise aqueous formulations.
• Global Regulatory Acceptance: One of the most thoroughly researched preservatives with a long history of safe use in the cosmetic, pharmaceutical, and food industries.
• Thermal Stability: Maintains structural integrity and preservative power across a wide temperature range, making it suitable for hot-process emulsions.
• Low Odor & Color Impact: Its high purity ensures that the sensory characteristics (fragrance and color) of the final product remain unaffected.
• Applications: Widely utilized in oil-in-water (O/W) emulsions, facial creams, sunscreens, foundations, and high-viscosity body butters.

Formulation Guidelines

• Suggested Dosage: 0.01% – 0.1% (In the EU and China, the maximum concentration is restricted to 0.14% for the sum of individual esters).
• pH Stability: Effective over a broad pH range of 3.0 – 8.0, with optimal stability in slightly acidic environments.
• Processing: Due to its lipophilic nature, it is best incorporated into the oil phase of the formulation or pre-dissolved in a suitable solvent before addition.
• Regulatory Note: For leave-on products designed for the nappy area of children under 3 years, local regulations should be consulted regarding its usage.
• Synergy: Combine with Bisabolol to soothe potential skin sensitivity and provide anti-inflammatory benefits, ensuring a mild user experience in paraben-containing formulations.