hydroxyethyl cellulose cas number

Understanding Hydroxyethyl Cellulose (HEC) Composition, Applications, and Benefits

Hydroxyethyl cellulose (HEC) is a non-ionic, water-soluble polymer derived from cellulose, a natural polymer sourced from plant cell walls. The chemical structure of HEC consists of hydroxyethyl groups introduced onto the cellulose backbone, which enhances its solubility in water and its functional properties. Its CAS number (CAS 9004-62-0) serves as a unique identifier for this compound, facilitating its identification in chemical databases and regulatory documents.

Composition and Properties

The molecular weight of hydroxyethyl cellulose can vary, affecting its viscosity, solubility, and gel-forming properties. This variability allows for a wide range of applications in various industries, from food to pharmaceuticals, cosmetics, and personal care products. Due to its non-toxic nature and compatibility with numerous substances, HEC is preferred in formulations requiring thickening, suspending, and stabilizing agents.

The solubility of HEC in water is particularly noteworthy. It dissolves to form a viscous gel, which can be adjusted according to the concentration used. This gel-like consistency is a significant property that makes it invaluable in many applications. Additionally, HEC displays excellent tolerance to electrolytes, making it suitable for use in environments with varying ionic strengths.

Applications of Hydroxyethyl Cellulose

1. Cosmetics and Personal Care HEC is widely used in cosmetic formulations including creams, lotions, and gels. It serves as a thickening agent, enhancing the texture and stability of these products. Its ability to retain moisture also plays a crucial role in skin hydration.

2. Pharmaceuticals In the pharmaceutical industry, HEC is commonly utilized in drug formulations, particularly in controlled-release applications. It can modify the release rate of active ingredients, improving the efficacy and bioavailability of medications.

3. Food Industry HEC acts as a thickening and stabilizing agent in food products. It is often used in sauces, dressings, and dairy products to improve mouthfeel and texture, as well as to prevent ingredient separation. Its safety profile has earned it approval from regulatory authorities in various regions for use in food applications.

4. Construction and Building Materials In the construction industry, hydroxyethyl cellulose is added to cement-based products, such as tile adhesives, plasters, and mortars. It improves workability and adhesion, and aids in controlling water retention, which is essential for effective curing and strength development.

5. Oil and Gas Industry HEC is employed in drilling fluids and other applications within the oil and gas sector. It enhances the viscosity and stability of these fluids, facilitating the efficient extraction of oil and gas.

Environmental and Health Benefits

One of the primary advantages of using hydroxyethyl cellulose is its biocompatibility and non-toxicity, making it a favored choice in environmentally-friendly formulations. As consumer awareness about health and environmental impacts increases, industries are leaning towards sustainable and safe ingredients, further solidifying HEC’s position in various markets.

Moreover, HEC's derived nature from cellulose complements the trend towards bio-based materials. Using natural ingredients in industrial formulations not only supports sustainability but also reduces reliance on synthetic chemicals, aligning with global efforts to create eco-friendly products.

Conclusion

In summary, hydroxyethyl cellulose (CAS 9004-62-0) is a versatile, water-soluble polymer with a wide range of applications across multiple industries. Its unique properties as a thickener, stabilizer, and suspending agent make it an invaluable ingredient in cosmetics, pharmaceuticals, food products, construction materials, and more. As industries continue to evolve towards sustainable practices, the importance of HEC is likely to increase, providing safe and effective solutions for a myriad of applications. Its role is crucial, not only in enhancing product performance but also in promoting a more sustainable and health-conscious approach to formulation development.