Sodium Carboxymethyl Cellulose (CMC), also known by its food additive code E466, is a white, odorless, and tasteless powder derived from cellulose. As a modified cellulose derivative, CMC is widely used across various industries for its thickening, stabilizing, and emulsifying properties. It is produced through the chemical modification of natural cellulose via a process known as carboxymethylation, in which hydroxyl groups on the cellulose backbone are replaced with carboxymethyl (-CH2-COOH) groups. This structural modification imparts unique characteristics to CMC, setting it apart from unmodified cellulose.

Physical and Chemical Properties of Sodium Carboxymethyl Cellulose (CMC)

CMC, with the CAS number 9000-11-7, is a semi-synthetic polymer with distinctive physicochemical characteristics. It typically appears as a fine, white crystalline powder with a fibrous texture and dissolves in water at approximately 10 mg/mL. The viscosity of its aqueous solutions generally ranges from 1500 to 3000 centipoise, depending on its degree of substitution and molecular weight. CMC exhibits excellent thermal stability and is resistant to light, although prolonged exposure to direct sunlight may lead to gradual degradation. It is insoluble in most organic solvents but dissolves readily in both cold and hot water, forming clear, viscous solutions. Its water-retention ability and gel-forming properties make it particularly valuable in industrial applications.

Manufacturing Process of Sodium Carboxymethyl Cellulose (CMC)

The production of CMC begins with raw cellulose sourced from natural materials such as cotton or wood pulp. Initially, the cellulose undergoes mercerization, a treatment involving sodium hydroxide (caustic soda) that activates the cellulose chains. In the subsequent etherification stage, the activated cellulose reacts with monochloroacetic acid, introducing carboxymethyl groups into the polymer chain. After the reaction is completed, the crude product is washed and neutralized to remove residual chemicals. Finally, the purified product is dried and ground into a white powder, with varying degrees of substitution and viscosity tailored to different applications.

Applications of Sodium Carboxymethyl Cellulose (CMC)

In the Food Industry

CMC is a versatile additive in the food industry. It functions as a stabilizer in ice cream to prevent ice crystal formation and enhances moisture retention in baked goods like bread and cakes, extending their shelf life. In sauces and mayonnaise, it serves as a thickener and emulsion stabilizer. Additionally, it improves the texture of yogurt and dairy products and helps stabilize beverages. CMC is also used in processed meats to retain moisture and improve binding.

In Cosmetics and Personal Care Products

CMC plays a crucial role in the formulation of cosmetic and personal care products. It acts as a thickener and texture enhancer in shampoos and conditioners, and as a stabilizer in creams and lotions. In toothpaste, CMC ensures appropriate viscosity and texture. It is also used in toners and serums for its stabilizing properties and to improve flow characteristics. Its film-forming capability is utilized in products such as mascaras and eyeliners.

In the Pharmaceutical Industry

The pharmaceutical sector utilizes CMC in a wide range of formulations. It serves as a binder in tablets and facilitates tablet formation. In syrups and suspensions, it acts as a thickener and helps suspend insoluble particles. It also serves as a base in ointments and topical creams. CMC is employed in the manufacturing of both soft and hard capsules and as a carrier for controlled drug release in certain oral medications.

In Other Industries

CMC finds extensive use across various other industries. In papermaking, it is used to enhance strength and surface smoothness. In textiles, it improves printability and dyeing processes. In the oil drilling industry, CMC controls the viscosity of drilling fluids. It also acts as a stabilizer and thickener in paints and resins and is employed in adhesives to improve the properties of water-based glues.

Purchasing Sodium Carboxymethyl Cellulose (CMC) from Persia Kamandar Capital

Persia Kamandar Capital Trading Company is a trusted supplier of high-quality sodium carboxymethyl cellulose (CMC) in Iran. Offering competitive prices and a variety of grades including food, pharmaceutical, and industrial, the company provides CMC in multiple packaging options (such as 25-kg bags). All products are supplied with certificates of analysis and in compliance with international standards. Customers from diverse industries, including food production, pharmaceuticals, cosmetics, papermaking, and textiles, can rely on the company’s technical support and nationwide delivery service. For pricing inquiries, technical consultation, and order placement, please contact us through the company’s official website.