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They can be considered as a safer and more environmentally friendly alternative to emulsifiable concentrates (EC). In an EW the continuous phase is water (as opposed to an organic solvent for ECs) which offers the benefit of lower phytotoxicity, no flashpoint concern, ease of handling, and a lower environmental impact.
EW formulations are physically stabilised by specifically identified polymeric surfactants incorporated at an appropriate level. The emulsion has already been established in the formulation and is only diluted further in the spray mixture.
We recommend the combination of a low and high HLB polymeric surfactant to obtain EW formulations with excellent, long term stability. This surfactant combination ensures that the formulation maintains stability over a range of application temperatures.
Block copolymer
A demineralised version of Atlas™ G-5002L. It is used as a high HLB emulsifier for active ingredients that are sensitive to mineral presence.
Polyalkylene oxide block copolymer
A high HLB polymeric emulsifier or wetting agent in liquid form providing long term stability It is commonly used in combination with Atlox™ 4916.....
Polyoxyethylene (8) sorbitan monolaurate
A high HLB emulsifier and adjuvant applicable for both built-in and tank mix applications The significantly reduced equilibrium surface tension.....
Polyoxyethylene (12) sorbitan monolaurate
A high HLB emulsifier and adjuvant applicable for both built-in and tank mix applications Improved performance identified with various hydrophilic.....
Polyoxyethylene (16) sorbitan monolaurate
A high HLB emulsifier and adjuvant applicable for both built-in and tank mix applications Strong all round performing adjuvant and strategic.....
We recommend the combination of a low and high HLB polymeric surfactant to obtain EW formulations with excellent, long term stability. This surfactant combination ensures that the formulation maintains stability over a range of application temperatures.
High molecular weight polymer
A low HLB polymeric emulsifier and non-aqueous dispersant with a unique star structure which provides exceptional stability As an emulsifier it is.....
Nonionic random polymeric
A nonionic random polymeric surfactant with low HLB value which can be used as an emulsifier or non-aqueous dispersant Multiple PEG anchoring groups.....
In an EW formulation the active ingredient must be fully soluble in the carrier solvent. If the active ingredient is solid, it will need to be dissolved in a solvent. Croda’s Seatons Natural Oil range are 100% natural and renewable, which make them a great choice for use in crop care formulations.
Linseed oil
Seatons refined linseed oil is a simple and effective alternative to mineral oil It is non-flammable impurity free and has good compatibility with.....
Rapeseed oil
Seatons refined rapeseed oil is a simple and effective alternative to mineral oil It is non-flammable impurity free and has good compatibility with.....
Soyabean oil
Seatons refined soyabean oil is a simple and effective alternative to mineral oil It is non-flammable impurity free and has good compatibility with.....
If an EW is not properly structured, the formulation can breakdown resulting in the oil phase creaming to the surface. This leads to reduced shelf life stability and poor performance in the field. The inclusion of a rheology modifier helps overcome this issue by increasing the viscosity of the formulation, providing improved stability.
Polyquaternium 37 emulsion
Rheology modifier designed for aqueous formulations Excellent performance seen in acidic conditions necessary for certain active ingredients.....
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