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Excipients for Drug Formulation

Kolliphor® CS 20

A non-ionic emulsifier with good sensory properties; stable with acidic, basic and ionic excipients

Kolliphor® CS 20 is a white, wax-like, non-ionic emulsifier with mild odor; prepared by the ethoxylation of cetyl (C16) and stearyl (C18) alcohols. Delivered in pellet form, it is used widely for pharmaceutical oil-in-water emulsions and delivers good sensory properties during product application. The final product has 20 ethoxy groups which form the hydrophilic portion of the surfactant structure. Kolliphor® CS 20 is suitable for emulsions & creams as well as foams. It can be formulated in hot processes and phase inversion technology (PIT) and is stable with a broad pH range.

Why use Kolliphor® CS 20

  • Shows good sensory properties when formulated into creams and lotions
  • Suitable for hot processes and phase inversion technology
  • Stable with acidic, basic and ionic excipients
  • Widely used as a mild, non-ionic emulsifier for pharmaceutical oil-in-water emulsions
Product Details
CAS No.: 68439-49-6
Former Product Name: Emulgin® B2 PH
Regulatory Status:

Complies with USP/NF and European Pharmacopoeia monographs. It is manufactured under IPEC-PQG GMP conditions and listed in the US FDA Inactive Ingredient Database.

Ph. Eur.: Macrogol cetostearyl ether 20, USP-NF: Polyoxyl 20 cetostearyl ether
Applications: Widely used as a mild, non-ionic emulsifier for pharmaceutical oil-in-water emulsions; delivering good sensory properties during product application.

Learn more about Kolliphor® CS 20

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