Is a type of agrochemical formulation where oil-based active ingredients are emulsified directly into water, forming a pre-emulsified concentrate that’s diluted before application. Unlike EC (Emulsifiable Concentrate), the emulsion is already formed in the product—making it safer and more environmentally friendly.

Key Characteristics of EW Formulations:

• Water is the continuous phase, with oil droplets dispersed inside

• Smaller particle size than EC, improving leaf coverage and reducing drift

• Lower VOCs and odor profile, ideal for sensitive crops and environments

• Requires emulsifiers to maintain stability over time

Advantages:

• Reduced phytotoxicity and dermal toxicity

• No flashpoint concerns—safer for storage and transport

• Compatible with SC and SE formulations

• Spontaneous emulsification upon dilution

Considerations:

• Requires precise emulsifier system to prevent phase separation

• Active ingredients must be stable in water

• More complex formulation process than EC

Typical Components:

EW formulations are increasingly used in herbicides, fungicides, and insecticides, especially where low toxicity and high efficacy are required. They’re a modern evolution of ECs, combining performance with safety.