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Crop Care
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  1. Home
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  3. Suspension Concentrate (SC)

Suspension Concentrate (SC)


Suspension concentrate (SC) formulations are a solid active ingredient dispersed in water. 

SCs have grown in popularity due to benefits such as absence of dust, ease of use and effectiveness when compared to formulation types such as emulsifiable concentrate (EC) and wettable powder (WP) formulations. To formulate a stable SC, the active ingredient must remain insoluble under all temperature conditions.

The Formulator's Toolbox
The Formulator's Toolbox

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SC formulation diagram

Benefits

  • Water based hence it provides good safety and user convenience
  • Suitable for many active ingredients with low water solubility
  • Absence of dust
  • Absence of flammable liquids
  • Small particle size of the active ingredient
  • Adjuvants can be built-in for bio enhancement

Limitations

  • Not compatible with water soluble active ingredients 
  • Crystal growth can be a problem if the active is partially soluble in water
  • Long term stability issues
  • Stability upon dilution

Products Recommended for SC

  • Adjuvants
  • Dispersants
  • Rheology Modifiers
  • Wetting Agents and Co-dispersants

Adjuvants

In comparison to OD formulations, where the continuous oil phase acts as an adjuvant, SC formulations can be considered less efficacious due to the continuous phase being water. To enhance the bioavailability of the active ingredient, adjuvants can be incorporated in SC formulations.

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Atplus™ UEP-100

Alkoxylated polyol ester

A built-in adjuvant designed to enhance the uptake of systemic or translaminar active ingredients with additional spray retention and humectancy.....

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SP Tween™ 22 MBAL

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.....

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SP Tween™ 23 MBAL

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.....

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SP Tween™ 24 MBAL

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.....

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Atplus™ PFA

Alkoxylated Alcohol

Atplus PFA is a pourable adjuvant developed to improve the performance of fungicidal applications It has proven performance with stobilurin active.....

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Dispersants

The use of polymeric dispersants is highly recommended due to their higher molecular weight, large repulsive barrier and many anchoring groups per molecule. This enables highly loaded, stable suspension concentrates to be formulated. We have a range of dispersants each with a specific area of high performance.

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Atlox™ 4915

Polymeric amphoteric dispersant & adjuvant

A polymeric amphoteric aqueous dispersant optimised for performance in electrolyte conditions and water free composition allows for use in OD.....

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Atlox Metasperse™ 500L

Modified styrene acrylic polymer

A modified styrene acrylic polymeric aqueous dispersant in liquid form which exhibits excellent hard water tolerance.

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Atlox™ 4913

Acrylic copolymer solution

A versatile nonionic polymeric aqueous dispersant Ideally partnered with Atlas G5002L as a wetting agent Suitable for a large range of organic and.....

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Atlox™ PN-100

Polymeric Dispersant

A single system polymeric dispersant and wetting agent developed for incorporating high concentrations of micronutrients into aqueous suspensions It.....

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Zephrym™ PD3315

Acrylic copolymer solution

A polymeric dispersant incorporating an increased level of hydrophilic material in its backbone improving its suitability for use as a dispersant for.....

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Rheology Modifiers

If an SC is not properly structured, the formulation can breakdown resulting in solid particles settling to the bottom of the formulation. 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.

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Atlox Rheostrux™ 300A

Polyquaternium 37 emulsion

Rheology modifier designed for aqueous formulations Excellent performance seen in acidic conditions necessary for certain active ingredients.....

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Wetting Agents and Co-dispersants

It is important to include a wetting agent as during the milling process fresh surfaces are generated which are generally of non-polar nature and will cluster together rapidly. This could lead to increased viscosity and even mill blockage. Including a wetting agent overcomes this as it replaces air and prevents agglomeration, allowing dispersants to perform. Wetting agents can also provide some dispersion.

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Atlas™ G-5000

Polyalkylene oxide block copolymer

A high HLB polymeric emulsifier or wetting agent in solid form. More suited to solid formulations than Atlas G-50002L.

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Atlas™ G-5002L

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.....

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Atlox™ 4894

Nonionic proprietary surfactant blend

Recommended as a wetting agent in combination with Atlox 4913 in aqueous based suspensions when Atlas G-5002L is not dymanic enough to provide.....

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Crodafos™ C10/5A

PEG-10 PPG-5 cetyl phosphate

An alkoxylated phosphate ester with good performance as a wetting agent or emulsifier in highly loaded micronutrient systems.

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Formulation Finder

Formulation Finder

Browse our range of fully developed formulations for inspiration and guidance.

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View adjuvants

Adjuvants

Find out how adjuvants can enhance the efficacy of active ingredients and improve performance.

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Micronutrients (Plant Nutrition)

Micronutrients (Plant Nutrition)

Learn more about micronutrients and technologies we provide to enhance these formulations.

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Polymeric Surfactants

Explore the benefits of using polymeric surfactants and how they can enhance stability even in the most challenging environments.

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  • Adjuvants
  • Capsule Suspension (CS)
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  • Microemulsions (ME)
  • Oil Dispersion (OD)
  • Suspoemulsion (SE)
  • Water Dispersible Granule (WDG)
  • Wettable Powder (WP)
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Crop Care

With our industry-leading technologies and unique formulation expertise, our unmatched range of additives and adjuvants help crop customers get the best performance out of their products, enabling farmers to get the best yields from their crops.

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