Nonionic Emulsifying Wax NF – Self-Emulsifying O/W Emulsifier for Cosmetics and Pharmaceuticals
Basic Information
INCI Name: Cetearyl Alcohol (and) Polysorbate 60
CAS Numbers: 67762-27-0 (Cetearyl Alcohol); 9005-67-8 (Polysorbate 60)
Trade Name: Nonionic Emulsifying Wax NF
Regulatory Status: Conforms to the US National Formulary monograph for nonionic emulsifying waxes.
Overview
Nonionic Emulsifying Wax NF is a blend of emulsifiers and stabilizers derived from vegetable and mineral sources. It is designed to provide fast, reliable, and versatile emulsification solutions across a wide range of personal care and pharmaceutical formulations. This wax is one of the most stable emulsifiers available, offering excellent performance over a broad pH range (3–14). It is self-emulsifying and compatible with most cosmetic and pharmaceutical ingredients, making it a preferred choice for oil-in-water (O/W) systems.
Key Properties
Self-emulsifying – simplifies formulation processes.
Stable across pH 3–14 – suitable for acidic, neutral, and alkaline systems.
Forms lamellar structures – enhances skin moisturization, sensory feel, and emulsion stability.
Compatible with a wide range of ingredients – including oils, active compounds, and other emulsifiers.
Nonionic nature – minimizes ionic interactions and compatibility issues.
Applications
Primary O/W emulsifier: Use at concentrations of 5–10% to create stable emulsions for creams, lotions, and ointments.
Emulsion stabilizer: Use at 1–2% to improve the stability of existing emulsions.
Personal care: Suitable for skin care, hair care, sunscreens, and color cosmetics.
Pharmaceuticals: Used in topical formulations such as creams and ointments for drug delivery.
Other applications: Can be used in a variety of other emulsified systems requiring reliable performance.
Benefits
Quick and easy emulsification – reduces processing time and energy.
Provides excellent stability and resistance to phase separation.
Enhances skin moisturization through lamellar gel network formation.
Compatible with most active ingredients, preservatives, and fragrances.
Meets NF monograph requirements, ensuring pharmaceutical-grade quality.
Recommended Use
As primary emulsifier: 5–10% of the oil phase.
As stabilizer: 1–2% of the total formulation.
Incorporate into the oil phase and heat to melt, then combine with the aqueous phase under shear.
Packaging and Storage
Packaging: 20 kg per box.
Storage: Store in a dry place, protected from direct sunlight and heat.
Shelf life: Typically 24 months under recommended storage conditions.
Quality Assurance
Each batch is tested for compliance with NF monograph specifications, including acid value, saponification value, and emulsification performance.