Agricultural Silicone Spreading and Penetrating Agent HY-188

Agricultural Silicone Spreading and Penetrating Agent HY-188 is a type of silicone surfactant and is a modified trisiloxane. They are helpful in spreading and penetrating of pesticide. The water surface tension can be as low as 20.50mN/m with its concentration at 0.10% (wt.). When mix it in the pesticide spray at some ratio, the contact angel of the foliage and spray can be lowered down, which can increase the spray coverage. Furthermore, it can help the pesticide to be absorbed through the leaves’s stomatal. Adding silicone adjuvant HY188 is extremely effective for improving efficiency, lessening using amount of pesticide, saving farm cost, and lessening environmental problem due to pesticides.

Product Details

Chemical information

Component:Modified trisiloxane

Item Standard
Appearance Colorless to light yellow liquid
Viscosity(25℃,mm2/s) 20-40
Surface tension(25℃,0.1%,mN/m) <20.5
Density(25℃)g/cm³ 1.00~1.02
Cloud point(1% wt,℃) <10℃


It is non-ionic and is a type of great penetrating and spreading agent for pesticide. It can reduce the using dosage of agrochemical spraying agent. The fastuptake of the agrochemical can be achieved


Used as spray adjuvant

Silicone adjuvant HY-188 can increase the coverage of the spraying agent, promote the uptake and decrease the dosage of the spraying agent. It is the most effective when the PH range spray mixtures is within 5-8 or when the prepared spay is used at once or within 24 hours after preparing

Used in agrochemical formulations

It can be used directly in the pesticide formulation. As surfactant can be hydrolyzed under different PH condition.To get the best results, the pH of the pesticide formulation should be modified with an agent to 6.5-7.5. The adding amount can be 0.5-8% of the pesticide solution.


Using Method

Used as spray and get mixed in drum

Usually, 5 g adjuvant HY-188 (4000times) would be added in 20kg solution. If the absorption of pesticide needs to be promoted, or the effect of pesticide needs to be strengthened or the spray amount needs to be reduced further, the usage quantity  should be added properly in the spray.The using quantity is usually as follows:

Item Standard
Plant promote regulator 0.025%~0.050%
Herbicide 0.025%~0.150%
Pesticide 0.025%~0.100%
Bactericide 0.015%~0.050%
Fertilizer and trace element 0.015~0.100%

In the using, the pesticide needs to be dissolved firstly. The pesticide need to be mixed with 80% water in advance, and it needs to be added into the mixture. Then, water need to be added to 100% and to be mixed evenly. When it is used, it is suggested to reduce the the water amount to 1/2 or 2/3 of the normal. The average unit using amount of pesticide can be decreased to 70-80% . The small nozzle can make the spray speed faster.

Used in Original Pesticide

If add agriculture adjuvant HY-188 directly into the pesticide formulation, the suggested adding amount is 0.50%-8.0% of pesticide. The PH range of the pesticide prescription should be modified to 6.0-8.0. The end user should add its using amount as per different types of prescription and pesticide to get an economical and effective result. Compatibility tests are needed to be done before usage.


Packing Methods

20L, 200L plastic drum, or up to clients request.