1. Characteristics ofCMC for toothpaste:

1. Acid resistance: pH 2-4.
2. Salt resistance: The addition of salt will not decrease but rather increases the viscosity of CMC aqueous solution.
3. Thermal resistance.
4. High transparency.
5. Antibacterial. 

2. Advantages:

1. Good compatibility to toothpaste ingredients.
2. Good thickening effect, helps retain extrusion set.
3. Smooth and glossy body.
4. Increases shelf life.