Carboxymethylcellulose (CMC), commonly known as Cellulose Gum, is a versatile and widely used derivative of cellulose. It is obtained through the chemical modification of natural cellulose, which is typically sourced from wood pulp or cotton. Carboxymethylcellulose finds applications in various industries due to its unique properties as a water-soluble polymer. Here are key aspects of Carboxymethylcellulose (CMC) or Cellulose Gum:

1. Chemical Structure:
   • Carboxymethylcellulose is derived from cellulose by introducing carboxymethyl groups onto the cellulose backbone. This modification enhances its water solubility and functional properties.
2. Water Solubility:
   • One of the significant features of CMC is its excellent water solubility. It readily dissolves in water to form a clear and viscous solution.
3. Viscosity:
   • CMC is valued for its ability to modify the viscosity of aqueous solutions. Different grades of CMC are available, offering a range of viscosity levels suitable for various applications.
4. Thickening Agent:
   • In the food industry, CMC serves as a thickening agent in a variety of products such as sauces, dressings, dairy products, and bakery items. It imparts a desirable texture and consistency.
5. Stabilizer and Emulsifier:
   • CMC functions as a stabilizer and emulsifier in food formulations, preventing separation and enhancing the stability of emulsions.
6. Binding Agent:
   • In pharmaceuticals, CMC is used as a binder in tablet formulations, helping to hold the tablet ingredients together.
7. Film-Forming Agent:
   • CMC has film-forming properties, making it suitable for applications where a thin, flexible film is desired. This is often seen in the pharmaceutical and cosmetic industries.
8. Drilling Fluids in Oil and Gas Industry:
   • CMC is employed in drilling fluids in the oil and gas industry to control viscosity and fluid loss during drilling operations.
9. Personal Care Products:
   • In personal care items such as toothpaste, shampoos, and lotions, CMC contributes to product stability, texture, and the overall sensory experience.
10. Paper Industry:
    • CMC is used in the paper industry to enhance paper strength, improve retention of fillers and fibers, and act as a sizing agent.
11. Textile Industry:
    • In textiles, CMC is utilized as a thickener in printing and dyeing processes.
12. Regulatory Approval:
    • Carboxymethylcellulose has received regulatory approval for use in food, pharmaceuticals, and various other industries. It is generally recognized as safe (GRAS) for consumption.

The specific properties and applications of Carboxymethylcellulose can vary based on the grade and formulation. Manufacturers provide technical data sheets and guidelines to help users choose the appropriate grade for their intended application.