Water dispersible granule (WDG) is also called dry suspension agent or granule wettable powder. When it is placed in water, it can disintegrate and disperse quickly, forming a highly suspended dispersion system.


In liquid preparations commonly used in SC and OD, white carbon black is often classified as a stabilizer in SC, and the manufacturer commonly uses settled white carbon black in SC. White carbon black has the function of thickening, preventing settling, preventing water from dissolving in SC to improve storage stability and prevent SC from "pasting". In OD dosage form, white carbon black has high quality requirements and is often used as a vapor phase white carbon black, which is classified as a structural stabilizer.


Play thickening and rheological control performance in OD. Silica in liquid can form a three-dimensional structure at rest, increasing the viscosity and yield point at rest. During shearing, the shear thinning effect can be formed. Therefore, there are anti-settlement, anti-delamination, thickening and research aid functions in OD.