Carboxymethyl Cellulose Sodium Salt (CMC), CAS No. 9004-32-4, is a workhorse polymer in many formulations due to its remarkable ability to modify rheology and stabilize complex mixtures. As a leading chemical manufacturer and supplier in China, we specialize in providing high-purity CMC tailored for demanding industrial applications. Understanding the scientific principles behind its function is key for R&D professionals and product formulators looking to enhance their product performance.

How CMC Controls Viscosity

The viscosity of CMC solutions is primarily determined by its molecular weight, degree of substitution (DS), and concentration. Higher molecular weight polymers create more entangled networks in solution, leading to increased viscosity. The carboxymethyl groups (-CH2-COONa) impart hydrophilicity, allowing CMC to readily dissolve in water and form viscous solutions. For instance, our high-purity CMC grades typically exhibit viscosities in the range of 1500-3000 mPa.s (at 1% concentration, 25°C), making them ideal for applications requiring significant thickening. When you buy CMC, understanding these parameters allows you to select the exact grade needed for optimal thickening efficiency, whether for food products, cosmetics, or industrial coatings. As a dedicated supplier, we can provide detailed specifications to assist in your selection process.

Stabilizing Emulsions and Suspensions

CMC is an excellent stabilizer for both oil-in-water emulsions and suspensions of solid particles. Its long polymer chains adsorb onto the surfaces of dispersed droplets or particles. The negatively charged carboxymethyl groups create electrostatic repulsion between these entities, preventing them from coalescing or settling out. This stabilizing effect is crucial in products like lotions, paints, and drilling fluids. By preventing phase separation, CMC ensures the uniformity and shelf-life of formulated products. Companies looking to purchase CMC for its stabilizing properties can rely on our consistent product quality.

Applications Requiring Precise Rheology Control

The precise control over viscosity and stability offered by CMC makes it invaluable in:

  • Food Products: Enhancing the body and mouthfeel of sauces, dressings, and dairy products.
  • Pharmaceuticals: Used as an excipient in tablet coatings and suspensions for controlled drug release.
  • Cosmetics: Providing the desired texture and consistency in creams, lotions, and shampoos.
  • Industrial Coatings: Ensuring uniform application and preventing pigment settling in paints and inks.
  • Oil & Gas: Maintaining the optimal viscosity of drilling muds for efficient well drilling.

Sourcing CMC from a Trusted Manufacturer in China

As a reputable manufacturer of Carboxymethyl Cellulose Sodium Salt, we are committed to delivering products that meet global standards. Our advanced production processes and rigorous quality control ensure that you receive CMC with consistent viscosity, high purity, and excellent functional performance. Partnering with us means securing a reliable supply chain from China, enabling you to optimize your production costs and product quality. We invite you to get a quote and experience the difference that high-quality CMC can make in your formulations. For businesses seeking to buy CMC, our expertise and product range offer a significant advantage.

By understanding the scientific underpinnings of CMC's functionality, formulators can better leverage this versatile polymer. Contact us today to explore our range of high-purity CMC and secure a reliable supply for your critical applications.