Oil Dispersion (OD) Formulation
High-Efficacy Delivery for Water-Sensitive Actives
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Oil Dispersion (OD) Formulations
Is a non-aqueous suspension system where solid active ingredients are finely dispersed in an oil medium, stabilized by emulsifiers and dispersants. Upon dilution in water, it forms a stable oil-in-water emulsion, ideal for water-sensitive actives and high-performance crop protection.
Key Features
Oil-based concentrate: No water in the formulation
Pre-emulsified system: Emulsifies instantly when mixed with water
Particle size: Typically 2–4 µm for optimal leaf coverage
High biological efficacy: Enhanced penetration and rainfastness
Non-flammable and low VOC: Safer for storage and handling
Advantages
Ideal for actives unstable in water
Excellent leaf adhesion and coverage
Reduces need for tank-mix adjuvants
Environmentally safer than ECs
Can replace SCs and WDGs with better performance and cost-efficiency
Typical Components
| Component | Function |
|---|---|
| Active ingredient | Solid pesticidal or nutritional agent |
| Oil phase (e.g. methylated seed oil) | Carrier and adjuvant |
| Emulsifiers | Enable water compatibility upon dilution |
| Dispersants | Keep particles suspended in oil |
| Rheology modifiers | Prevent settling and phase separation |
| Stabilizers & antifoam | Improve usability and shelf life |
OD formulations are gaining traction as a modern alternative to ECs, especially under stricter solvent regulations. They’re also preferred over SCs when biological performance is a priority and water-based systems fall short