Cosmetic Active Ingredients

1,2-Pentanediol

  • CAS No.5343-92-0
  • GradeIndustrial / Pharmaceutical
  • Availability● In Stock

High-purity 1,2-Pentanediol (≥99.0%) widely used as a multifunctional cosmetic active ingredient offering moisturization, preservation, and solvent properties.

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Product Technical Details

Product Overview

1,2-Pentanediol is a versatile diol with the molecular formula C5H12O2 and a molecular weight of 104.15 g/mol. As a colorless to light yellow liquid at room temperature, it combines excellent solubility, low toxicity, and skin-friendly characteristics, making it a preferred choice in modern cosmetic and personal care formulations. Its dual hydroxyl groups enable effective humectant behavior while contributing to microbial stability without the need for traditional parabens or formaldehyde donors.

Specifications

CAS Number5343-92-0
Molecular FormulaC5H12O2
Molecular Weight104.15 g/mol
Density0.971 g/mL at 25 °C
Boiling Point206 °C
Flash Point104 °C
Refractive Index1.439
AppearanceColorless to light yellow liquid
Purity≥99.0%

Industrial Applications

In the cosmetics industry, 1,2-Pentanediol serves as a multifunctional active ingredient with three key roles:

  • Acts as an effective humectant to attract and retain moisture in skincare products.
  • Provides mild preservative efficacy by inhibiting microbial growth, supporting clean-label formulations.
  • Serves as a co-solvent to enhance the solubility of other actives and improve product texture and stability.

Beyond cosmetics, it also finds use in agrochemical synthesis—such as in the production of triazole-based fungicides—and as a building block in green chemistry applications involving biomass-derived glycols. However, its primary commercial value lies in personal care, where it aligns with consumer demand for safe, sustainable, and high-performance ingredients.

Stored in tightly sealed containers in a cool, dry, and well-ventilated area, 1,2-Pentanediol maintains stability and performance throughout its shelf life. Standard packaging includes 15 kg drums, with custom options available for industrial-scale buyers.