1. The stability effect of CMC with too low substitution is slightly poor, which is manifested as large amount of sedimentation, poor viscosity stability and poor fluid loss resistance.
2. The higher the degree of substitution, the more the number of anions (-OCH2COONa) on the CMC molecule of sodium carboxymethyl cellulose, and the more stable the performance.
3. The higher the CMC substitution degree of sodium carboxymethyl cellulose, the less unsubstituted units in the molecule.
4. High degree of substitution CMC is more stable in application.
5. The CMC product with good uniformity is good in quality, which is reflected in the good fluidity of the product appearance, high transparency after the product is dissolved in water, and good acid resistance, heat resistance, salt resistance and thixotropy.
