Propyl Paraben

Propyl Paraben is a popular antimicrobial preservative and antifungal agent, specifically the n-propyl ester of p-hydroxybenzoic acid, used to ensure the microbial stability of consumer products.


CAS Number 94-13-3
Chemical Formula C 10 H 12 O 3
Molecular Weight 180.20 g/mol
Appearance White crystalline powder or colorless crystals
Melting Point 96 – 99 °C
Purity ≥ 99.0% (USP/BP/EP/FCC Grade)
Solubility Very soluble in Ethanol and Ether; very slightly soluble in Water
(0.04% at 25°C)
Safety Information Generally Recognized as Safe (GRAS) for use in food and
cosmetics, but classified as a mild Irritant (GHS07); it may cause
skin sensitization or eye irritation in concentrated form.
Packing Laboratory: 100g, 500g, 1kg plastic bottles;
Industrial: 25 kg fiber drums or multi-layer paper bags with moisture-proof PE liners
Synonyms Propyl 4-hydroxybenzoate, Nipasol, Propyl p-hydroxybenzoate
Uses Propyl Paraben is primarily utilized as a preservative in cosmetics,
pharmaceuticals, and food products to prevent the growth of bacteria
and fungi, often used in combination with Methyl Paraben for a
synergistic antimicrobial effect.

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