Cellulose, hydroxyethyl ether (MW 1000000)

Hydroxyethyl cellulose (HEC) is a water-soluble polymer derived from cellulose through the introduction of hydroxyethyl groups. The molecular weight (MW) specified, 1000000, represents a high molecular weight variant. Here is an overview of hydroxyethyl cellulose with a molecular weight of 1000000:

Hydroxyethyl Cellulose (HEC):

1. Chemical Structure:
   • HEC is a cellulose derivative where hydroxyethyl groups are attached to the anhydroglucose units of the cellulose chain. This modification enhances the water solubility and other functional properties of cellulose.
2. Molecular Weight:
   • The specified molecular weight of 1000000 indicates a high molecular weight variant. Molecular weight influences the viscosity, rheological properties, and performance of HEC in various applications.
3. Physical Form:
   • Hydroxyethyl cellulose with a molecular weight of 1000000 is typically available in the form of a white to off-white, odorless powder. It can also be supplied as a liquid solution or dispersion.
4. Water Solubility:
   • HEC is water-soluble and can form clear and viscous solutions in water. The degree of solubility and viscosity can be influenced by factors such as temperature, pH, and concentration.
5. Applications:
   • Thickening Agent: HEC is commonly used as a thickening agent in various applications, including paints, coatings, adhesives, and personal care products. The high molecular weight variant is particularly effective in providing viscosity.
   • Stabilizer: It functions as a stabilizer in emulsions and suspensions, contributing to the stability and uniformity of the formulations.
   • Water Retention Agent: HEC has excellent water retention properties, making it valuable in construction materials, such as mortars and cement-based products.
   • Pharmaceuticals: In the pharmaceutical industry, HEC is used as a binder, disintegrant, and thickener in tablet formulations. Its water-soluble nature makes it suitable for various oral dosage forms.
   • Personal Care Products: Found in cosmetics, shampoos, and lotions, HEC provides viscosity and stability to formulations in the personal care industry.
   • Oil and Gas Industry: HEC is used in drilling fluids as a rheology modifier and fluid-loss control agent.
6. Viscosity Control:
   • The high molecular weight of HEC contributes to its effectiveness in controlling viscosity. This property is valuable in applications where the desired thickness or flow characteristics of a product need to be maintained.
7. Compatibility:
   • HEC is generally compatible with a wide range of other materials and additives commonly used in different industries. However, compatibility testing should be conducted when formulating with specific components.
8. Quality Standards:
   • Manufacturers often provide specifications and quality standards for HEC products, ensuring consistency and reliability in performance. These standards may include criteria related to molecular weight, purity, and other relevant properties.

Hydroxyethyl cellulose with a molecular weight of 1000000 is a versatile polymer with diverse applications across industries, particularly in formulations where high viscosity and water solubility are essential characteristics. It is important to follow recommended guidelines and formulations provided by manufacturers for optimal results in specific applications.