Understanding the chemistry of ingredients is vital for successful product development. Carbomer 940, a key component supplied by NINGBO INNO PHARMCHEM CO.,LTD., is a polymer with distinct chemical properties that lend themselves to a variety of applications, particularly in cosmetics and pharmaceuticals. This guide delves into its functional chemistry and usage.

At its core, Carbomer 940 is a cross-linked polyacrylic acid. The '940' designation indicates specific molecular characteristics, such as molecular weight and crosslinking density, which influence its performance. As a white, fluffy powder, it is initially insoluble in water. However, upon hydration, its carboxylic acid groups become available for neutralization.

The magic of Carbomer 940 lies in its pH-sensitive nature. In acidic conditions, it remains dispersed as a hazy suspension. However, upon raising the pH to neutral or slightly alkaline levels (typically above pH 6.0) through the addition of a neutralizing agent like sodium hydroxide (NaOH), potassium hydroxide (KOH), or triethanolamine (TEA), the polymer chains uncoil and expand. This process, known as neutralization, leads to a significant increase in viscosity and the formation of a clear gel. The carbomer 940 properties are thus intrinsically linked to pH adjustment.

The efficiency of Carbomer 940 as a gelling agent is remarkable, meaning small amounts can create substantial thickening. This characteristic is vital for achieving desired product textures in everything from lightweight serums to viscous creams. Furthermore, its cross-linked structure provides excellent suspension capabilities, allowing it to effectively hold solid particles in place, preventing sedimentation in formulations.

When discussing how to use Carbomer 940, proper dispersion is key. It should be added slowly to water or a suitable solvent with gentle agitation to prevent clumping. High shear should be avoided during the initial dispersion phase to prevent premature viscosity loss. The neutralization step is critical for activating the gelling properties. For formulators looking to buy carbomer 940, NINGBO INNO PHARMCHEM CO.,LTD. provides materials that adhere to strict quality controls, ensuring predictable performance.

Understanding the carbomer 940 chemical formula (C3H4O2)n and its behavior during formulation is crucial for creating stable, effective products. By mastering its hydration and neutralization, formulators can leverage Carbomer 940 to create a wide range of products with excellent viscosity, clarity, and stability, making it an indispensable ingredient in the cosmetic and pharmaceutical industries.