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Propyl Paraben is an antimicrobial preservative belonging to the ester family of p-hydroxybenzoic acid. It is more lipophilic (oil-soluble) than Methyl Paraben, making it particularly effective in the oil phases of emulsions and creams. It is widely recognized for its strong efficacy against molds and yeasts. As a staple in the pharmaceutical industry, it ensures the long-term microbial stability and safety of liquid and semi-solid medicinal preparations.
Medical dermatological creams.
Due to its lipophilic nature, it concentrates in the oil phase to prevent fungal growth within the emulsion.
Solutions and suspensions.
Typically used in a 1:10 ratio with Methyl Paraben to achieve a "synergistic effect" covering a broad microbial spectrum.
Sunscreens and moisturizing medicated lotions.
Ensures the chemical and microbial stability of the product over long storage periods.
Multi-dose injection vials.
Prevents accidental microbial contamination that may occur during repeated dosage withdrawals.
The product fully complies with the requirements specified in the United States Pharmacopeia (USP), the European Pharmacopoeia (EP), and/or food standards (FCC).
When combined with Methyl Paraben, it provides a comprehensive preservative system that targets both Gram-positive/Gram-negative bacteria and fungi.
Rigorous testing for p-hydroxybenzoic acid and related impurities to ensure a superior safety profile.
Highly stable and resistant to hydrolysis under standard pharmaceutical manufacturing conditions.