Silicone Surfactant (Organosilicone Adjuvant)
CAS Number: 27306-78-1
Organosilicone adjuvants (Silwet-type) are trisiloxane-based super-spreading surfactants that dramatically reduce spray droplet surface tension, enabling rapid spreading and stomatal penetration of foliar-applied pesticides. At low use rates (0.05–0.1% v/v), they increase the contact area of spray deposits and improve rainfastness. They are used with systemic herbicides, fungicides, and insecticides to maximize field performance.
Technical Specifications
| appearance | Clear, colorless to light yellow liquid |
| moisture (%) | ≤0.5 |
| pH (1% solution) | 5–7 |
| active ingredient (%) | ≥98 |
| viscosity (mPa·s, 25°C) | 20–50 |
| surface tension (mN/m, 0.1%) | ≤22 |
Applications
- Super-spreading adjuvant for systemic herbicides
- Stomatal penetration enhancer for fungicides and insecticides
- Rainfastness and retention improvement
- Glyphosate, nicosulfuron, and sulfonylurea efficacy booster
- Foliar fertilizer uptake enhancement
Key Features
- Ultra-low surface tension enables stomatal entry of spray
- Effective at very low use rates (0.05–0.1% v/v)
- Significantly improves rainfastness within 30 minutes
- Compatible with most pesticide active ingredients
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CAS Number
27306-78-1
Category
Agricultural / Crop ChemicalsAvailability
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