Sodium Carboxymethyl Cellulose (Sodium CMC)
Sodium carboxymethyl cellulose (sodium CMC) is a water-soluble cellulose derivative that is widely used in various industries due to its excellent thickening, binding, and emulsifying properties.
Chemical Structure
Sodium CMC is a linear polymer composed of glucose units that have been modified by the introduction of carboxymethyl groups. The degree of substitution (DS) of carboxymethyl groups determines the properties of the sodium CMC.
Properties
Water Solubility: Highly soluble in water, forming clear to slightly opalescent solutions.
Thickening and Binding: Excellent thickening and binding properties, even at low concentrations.
Emulsifying: Effective emulsifier for both oil-in-water and water-in-oil emulsions.
Stability: Stable over a wide pH range and temperature.
Non-Toxic: Generally considered non-toxic and safe for use in food and pharmaceutical applications.
Applications
Sodium CMC is used in a wide range of industries, including:
Food Industry: As a thickener, stabilizer, and emulsifier in various food products, such as ice cream, sauces, and baked goods.
Pharmaceutical Industry: As a binder, disintegrant, and suspending agent in tablets, capsules, and suspensions.
Personal Care Products: As a thickener, emulsifier, and suspending agent in cosmetics, such as shampoos, conditioners, and lotions.
Paper Industry: As a sizing agent and binder in paper and board production.
Textile Industry: As a thickener and binder in textile printing and finishing.
Construction Industry: As a water-retention agent and rheology modifier in construction materials, such as concrete and mortar.
