Propylparaben is a propyl ester of p-hydroxybenzoic acid, a widely used broad-spectrum preservative used in personal care products, pharmaceuticals, and some foods. It has intensive growth-inhibiting effects on mold fungi, yeasts, and bacteria.
Propylparaben is a white crystalline powder, without odor, with anionic ionicity. P-Hydroxybenzoic acid and some of its esters including Propylparaben occur naturally, which is a natural defense of some fruits and berries against microbes responsible for spoilage.
Propylparaben exhibits broad-spectrum antiseptic properties in a wide range of pH values from 4 to 8. In cosmetic concentrations, it has low toxicity and is environment-friendly as it is rapidly biodegradable under down-the-drain conditions.
Combined with other parabens, Propylparaben potentiates other preservatives and enhances entire preservation effectiveness. It is compatible with a wide range of active and functional personal care ingredients. It is a halogen-free compound, does not release formaldehyde, and has a very low minimum inhibition concentration (MIC).Ingredient products
Propylparaben is particularly effective against fermentative organisms. It is therefore often used in combination with Methylparaben and Ethylparaben, for example in ratios of 70 or 80 % EP to 30 or 20 % PP. This compound is particularly effective in inhibiting the growth of fermentative yeasts. Propylparaben is not readily soluble in water.
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