Propyl Paraben

Propyl Paraben (CAS 94-13-3) – Cosmetic Grade

Propyl Paraben is a high-purity ester of p-hydroxybenzoic acid widely used as a broad-spectrum antimicrobial preservative in cosmetic and pharmaceutical formulations. It appears as a white crystalline powder and is valued for its strong antifungal properties, formulation stability, and long history of safe use within regulated limits.

Propyl Paraben is commonly used in combination with other parabens (such as methylparaben) to enhance preservative efficacy and extend product shelf life.

Chemical Information

Chemical Name: Propyl p-hydroxybenzoate

INCI Name: Propylparaben

Molecular Formula: C₁₀H₁₂O₃

Molecular Weight: 180.20 g/mol

CAS Number: 94-13-3

Appearance: White crystalline powder

Odor: Odorless

Solubility: Slightly soluble in water; soluble in alcohol and glycols

Purity: Typically ≥ 99%

Key Applications of Propyl Paraben

Cosmetic & Personal Care Industry

Propyl Paraben is extensively used in:

Creams and lotions
Facial cleansers
Shampoos and conditioners
Makeup formulations
Sunscreens
Wet wipes

It functions as a broad-spectrum preservative, particularly effective against molds and yeasts. It is often combined with methylparaben for enhanced antimicrobial coverage in water-based systems.

Pharmaceutical Applications

In pharmaceutical products, Propyl Paraben is used as:

A preservative in topical creams and ointments
A stabilizing agent in liquid formulations
A microbial protection component in oral syrups

Its proven stability across a wide pH range makes it suitable for diverse formulation environments.

Industrial Applications

In specialty chemical systems, Propyl Paraben may function as:

A preservative in water-based products
A stabilizing additive in personal care intermediates
A microbial control agent in formulation manufacturing

Storage & Handling

Store in a cool, dry, well-ventilated area
Keep container tightly closed
Protect from moisture and direct sunlight
Use appropriate personal protective equipment during handling

Propyl Paraben remains a cost-effective and reliable preservative solution for cosmetic and pharmaceutical manufacturers seeking strong antifungal protection, formulation stability, and extended shelf life.