Sodium Carboxymethyl StarchSodium carboxymethyl starch is an anionic starch ether, a white or yellow powder, and an electrolyte soluble in cold water. It is a type of modified starch, belonging to ether starches, and is a water-soluble anionic polymeric compound. It is tasteless, non-toxic, and resistant to mildew. When the degree of substitution is greater than 0.2, it is easily soluble in water. The sodium salt, also known as (CMS-Na), is commonly used. Shape: White or yellow powder, odorless, tasteless, non-toxic, and hygroscopic when heated. It dissolves in water to form a colloidal solution and is stable to light and heat. It is insoluble in organic solvents such as ethanol and ether. The aqueous solution is more stable in alkali and less stable in acid, forming insoluble free acid, resulting in reduced viscosity, therefore it is not suitable for strongly acidic foods.

　　The main characteristics of sodium carboxymethyl starch are:

　　1. Soluble in cold water, with strong water solubility and water retention.

　　2. It is a non-toxic, tasteless, and colorless natural polymer material.

　　3. It has strong binding force and stability and can be used as a binder, stabilizer, and thickener for various products.

　　4. Good compatibility, can be used with a variety of materials.

　　5. High temperature resistant; the solution can withstand temperatures up to 120°C.

　　6. It has excellent antibacterial and bacteriostatic effects.

　　7. Significant price advantage; it is a relatively inexpensive natural water-soluble polymer material.

　　8. Environmentally friendly and biodegradable, with wide applications.

　　In summary, sodium carboxymethyl starch, as a natural water-soluble polymer material, has excellent properties and a wide range of applications, making it highly recommended for use.