Organosilicone Surfactant & Adjuvant & Trisiloxane H-408

H-408 is a modified trisilioxane, is an organic silicone surfactant with super alility of spreading. It is a non-ion surfactant has the structure of type "T". H-408 have super ability of spreading.It makes the water surface tension lower down to the 20.5mN/m at the concerntration of 0.1%(wt). After the mixture with the pesticide solution at the certain proportion, It can lower the contact angle between the spray and foliage, which can enlarge the coverage of the spray. Furthermore, H-408 can make the pesticide absorbed through the stomatal leaves, which is extremely effective for improving efficacy, reducing amount of pesticede, saving cost, reducing environmental pollution caused by pesticides.



Product name: Organosilicone adjuvant 

CAS: 67674-67-3

Other descriptions: Silicone Surfactant agriculture, Spray adjuvant agriculture, Silicone adjuvant, Trisiloxane, Polyether modified trisiloxane, Synergist, Spreader, Penetrating Agent, Super wetting, Organosilicone adjuvant, Organosilicone surfactant, Organosilicone pesticide synergist surfactant

Same as Silwet 408, Dow Corning Q2-5211


AppearanceColourless to light amber liquid
Active content %100%
CompositionSilicone Polyether
Viscosity (cst)15-60
Surface Tension (0.1%)19-22mN/m
Cloud point<10


H-408  is a super spreading and penetrating agent can be used in formulate or as a tank mix.

H-408,as a component of 0.5-8% in agrochemical formulations. Proposing regulation of pesticide formulations PH value of 6-8.

H-408, as a tank mix adjuvant, As usual, add 50g H-408 to 200kg spray solution (4000-times diluent).Generally,

ApplicationTypical Use Rate
Plant Growth Regulators0.025-0.05%
Fertilizers and trace elements0.015-0.1%

H-408  wetting properties are useful in various industrial applications e.g. Inks & coatings, Agriculture, leather, textile and any other applications where strong surface tension reductions, wetting and spreading are desired.

Organosilicone Surfactant


Before handling, read the Material Safety Data Sheet and container label for safe use, physical and health hazard information.



After sealing packaging products stored in a cool, dry place , H-408 has a shelf life of 36 months from date of manufacture.



H-408  is available in 200L drum and 1000L IBC or others.



Hito chenical believes that the information in this technical data sheet is an accurate description of the typical uses of the product. Hito Chemical , however, disclaims any liability for incidental or consequential damages, which may result from the use of the product that are beyond its control. Therefore, it is the user’s responsibility to thoroughly test the product in their particular application to determine its performance, efficacy and safety. Nothing contained herein is to be considered as permission or a recommendation to infringe any patent or any other intellectual property right.

Contact Us

Tel.: +86 792 317 0318

Mobile: +86 137 6719 6417

WhatsApp: +86 137 6719 6417


Add.: No 6, Tianhong Road, Xinghuo industry zone, Yongxiu county, Jiujiang city, Jiangxi province, China


Access exclusive offers, news, and more.

Receive it by email