Wettable powder (WP) is a kind of dosage form, which can be used to achieve a certain fineness of powder, which is made up of pesticide, inert filler (mostly bentonite, kaolin, etc.) and a certain amount of additives. From the shape point of view, there is no difference with the powder, but because of the addition of wetting agents, dispersants and other additives, added to the water after the water can be wet, dispersed, the formation of suspension, spray application. Compared with the missible oil, wettable powder, low production cost, availability of paper or plastic bag packaging, storage and transportation is convenient, safe, easy packaging materials processing; more importantly, WP without the use of solvent and emulsifier, the plant is safe, not easy to produce injury, environmental safety, use in fruit bag before, can avoid the organic solvents on the fruit surface stimulation.
Advantages
1 insoluble in the water, can be processed into WP, such as the need to make a high concentration or spray use, generally processed into WP;
2 strong adhesion, less drift, light pollution of the environment;
3 does not contain organic solvents, good environmental compatibility, easy storage, transportation;
4 low production costs, production technology, equipment supporting mature;
5 the effective component content is higher than that of the powder; the dust pollution in the process is certain.
6 is the basis for the development of new dosage forms. SC, WDG, EP, EG, WT, etc..
