Isopropylparaben

Product Description

Isopropylparaben is a specialized oil-soluble preservative belonging to the paraben family, utilized in specific global markets for its powerful antimicrobial properties. Due to its branched-chain structure, it exhibits higher lipophilicity than its linear counterparts, making it exceptionally effective at protecting the oil phase and interfacial areas of emulsions. Our Isopropylparaben is manufactured to the highest purity standards, ensuring a stable and reliable barrier against mold, yeast, and bacteria. It is an ideal commercial choice for anhydrous systems and high-lipid formulations where long-term shelf-life integrity is a critical requirement.

Product Specification

• INCI Name: Isopropylparaben
• CAS No.: 4191-73-5
• Chemical Name: Isopropyl 4-hydroxybenzoate
• Product Type: Preservative / Antimicrobial
• Appearance: White crystalline powder
• Purity (Assay): ≥ 99.0%
• Melting Point: 84.0°C – 86.0°C
• Solubility: Highly soluble in ethanol, ether, and oils; very slightly soluble in water.

Key Benefits & Applications

• Potent Lipophilic Defense: Its branched chemical structure allows for superior penetration of microbial cell membranes, particularly in oil-rich environments.
• Strong Anti-Fungal Activity: Offers high efficacy against spoilage organisms like yeasts and molds that often compromise the quality of anhydrous products.
• Formula Compatibility: Remains chemically inert and does not react with vitamins, sunscreens, or essential oils, maintaining the fragrance and color of the final product.
• Low Usage Rate: High activity levels allow for effective preservation at very low concentrations, optimizing the ingredient cost-to-performance ratio.
• Applications: Primarily used in lipsticks, oil-based serums, professional hair waxes, and heavy body butters in permitted jurisdictions.

Formulation Guidelines

• Suggested Dosage: 0.01% – 0.1% (Usage is subject to local regional regulations; please verify current status for your target market compliance).
• pH Stability: Maintains peak effectiveness within a pH range of 3.0 – 8.0.
• Processing: Should be dissolved in the oil phase during the heating stage (approx. 75°C) to ensure uniform distribution throughout the batch.
• Regulatory Note: This ingredient is restricted or prohibited in certain regions (e.g., EU, China) for leave-on products. Ensure regulatory alignment before final formulation.
• Synergy: Combine with Methylparaben to create a broad-spectrum preservation system that covers both the aqueous and lipophilic phases, ensuring 360° protection in complex emulsions.