Isobutylparaben

Product Description

Isobutylparaben is a high-performance, lipophilic preservative specifically favored for its intense antimicrobial activity against molds and yeasts. As a branched-chain ester of p-hydroxybenzoic acid, it exhibits superior solubility in oils and non-polar solvents compared to linear parabens. Our Isobutylparaben is synthesized to meet rigorous purity standards, providing a robust and reliable defensive shield for anhydrous formulations and the oil phase of complex emulsions. It is a commercially strategic choice for B2B formulators who require maximum preservation efficacy in lipid-rich environments where product integrity and shelf-life extension are paramount.

Product Specification

• INCI Name: Isobutylparaben
• CAS No.: 4247-02-3
• Chemical Name: Isobutyl 4-hydroxybenzoate
• Product Type: Preservative / Antimicrobial
• Appearance: White crystalline powder
• Purity (Assay): ≥ 99.0%
• Melting Point: 73.0°C – 77.0°C
• Solubility: Highly soluble in alcohol, ether, and oils; practically insoluble in water.

Key Benefits & Applications

• Maximum Lipophilic Potency: Its unique branched structure enhances its ability to penetrate microbial cell walls within fatty or oily bases.
• Superior Mold & Yeast Inhibition: Provides one of the strongest anti-fungal profiles in the paraben family, preventing spoilage in high-lipid systems.
• Excellent Thermal Stability: Can withstand high-temperature processing (up to 80°C) without losing activity, ideal for hot-pour sticks and balms.
• Low Odor & Color Impact: High-purity grade ensures that the preservative does not interfere with the delicate fragrance or aesthetic color of luxury formulations.
• Applications: Primarily used in anhydrous lip balms, hair pomades, cleansing oils, and heavy night creams in permitted jurisdictions.

Formulation Guidelines

• Suggested Dosage: 0.01% – 0.1% (Usage must comply with local regional regulations; check current status for your specific market).
• pH Stability: Demonstrates consistent efficacy within a pH range of 3.0 – 8.0.
• Processing: Incorporate into the oil phase during the heating stage. Ensure complete dissolution before emulsification or cooling to prevent recrystallization.
• Regulatory Note: This ingredient is restricted or banned in certain markets (e.g., EU, China). Always verify the regulatory compliance of the final destination country.
• Synergy: Combine with Propylparaben to achieve a highly concentrated lipophilic defense, providing enhanced protection for the oil-water interface in high-performance emulsions.