Gel forming, Carbomer 940, Thickening agent, Viscosity Builder, cosmetics, emulsifier, Stabilizer
Gel forming, Carbomer 940, Thickening agent, Viscosity Builder, cosmetics, emulsifier, Stabilizer

Carbomer 940

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Raw Materials & Cosmeceuticals
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CAS: 9003-01-4

INCI: Carbomer 940

Chemical Structure:

  • Carbomer 940 is a high-molecular-weight polymer of acrylic acid cross-linked with a polyalkenyl ether. It is a synthetic compound composed of acrylic acid monomers.

Physical Form:

  • Carbomer 940 is typically supplied in a fluffy, white powder form.


  • It is insoluble in water but can absorb and retain large amounts of water to form a gel-like consistency.

Function in Formulations:

  1. Thickening Agent: Carbomer 940 is widely used as a thickening agent in cosmetic and pharmaceutical formulations. It imparts viscosity to formulations, giving them a gel-like or creamy texture.

  2. Stabilizer: It helps stabilize emulsions, preventing the separation of oil and water components in formulations.

  3. Suspension Agent: Carbomer 940 is effective in suspending solid particles in liquids, preventing settling or clumping.

  4. Controlled Release Agent: In pharmaceutical formulations, it can be used to control the release of active ingredients.

Common Applications:

  • Carbomer 940 is commonly used in the formulation of various skincare and personal care products, including creams, lotions, gels, and topical pharmaceuticals.

Usage Instructions:

  • It is added to formulations in small amounts and requires proper dispersion to avoid clumping.
  • Carbomer 940 is often neutralized with an alkaline substance (such as sodium hydroxide) to achieve its full thickening potential.


  • It is compatible with a wide range of cosmetic ingredients.


  • Provides a smooth and consistent texture to formulations.
  • Enhances the stability of emulsions.
  • Enables the formulation of clear gels.


  • Carbomer 940 can be irritating to the eyes, so precautions should be taken during the formulation process.

Regulatory Status:

  • Carbomer 940 is considered safe for use in cosmetics and pharmaceuticals when used according to industry guidelines.

Certificate of Analysis - Material Safety Data Sheet

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