Butylparaben

Product Description

Butylparaben is a highly effective oil-soluble preservative manufactured in our advanced facility to provide long-lasting antimicrobial protection for premium cosmetic and personal care products. As a p-hydroxybenzoic acid ester with a longer alkyl chain, it exhibits significantly higher lipophilicity and potency against molds and yeasts compared to shorter-chain parabens. This ingredient is a commercially essential choice for anhydrous systems and oil-in-water (O/W) emulsions, ensuring superior shelf-life stability and preventing microbial spoilage in high-performance beauty formulations.

Product Specification

• INCI Name: Butylparaben
• CAS No.: 94-26-8
• Chemical Name: Butyl 4-hydroxybenzoate
• Product Type: Preservative / Chemical
• Appearance: White crystalline powder or granules
• Purity (Assay): ≥ 99.0%
• Melting Point: 67.0°C - 70.0°C
• Solubility: Highly soluble in alcohol, oils, and organic solvents; insoluble in water.

Key Benefits & Applications

• Enhanced Lipophilic Protection: Specifically targets the oil phase of emulsions, where microbial contaminants often hide, providing a localized and powerful defensive barrier.
• Superior Anti-Fungal Power: Offers the highest efficacy among common parabens against tough-to-kill yeasts and molds, preventing product discoloration and odor changes.
• Low Usage Level: High potency allows for effective preservation at extremely low concentrations, optimizing formulation costs.
• Broad Formulation Stability: Stable over a wide temperature range and compatible with most cosmetic active ingredients and UV filters.
• Applications: Ideal for anhydrous lip balms, sunscreens, hair waxes, heavy facial creams, and luxury body butters.

Formulation Guidelines

• Suggested Dosage: 0.01% – 0.05% (Note: EU and China regulations limit the sum of Butyl- and Propylparaben to 0.14% in finished products).
• pH Stability: Maintains peak efficacy within a pH range of 3.0 – 8.0.
• Processing: Should be dissolved in the oil phase during the heating stage or pre-dissolved in an organic solvent (like propylene glycol) before incorporation.
• Regulatory Note: Not permitted in leave-on products designed for the nappy area of children under 3 years in certain jurisdictions.
• Synergy: Combine with Tocopheryl Acetate (Vitamin E) to provide synergistic protection against both microbial growth and lipid oxidation, extending the shelf life of oil-rich formulas.