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Super Absorbent Polymer

Super Absorbent Polymer

Accepta 4302 is a high performance; high purity super absorbent polymer based water retainer scientifically formulated using an innovative cross-linked co-polymer of acrylamide and potassium acrylate.

Accepta's super absorbent polymer has a range of applications but is primarily used as a highly effective water retainer for soils and substrates in farming, agriculture, horticulture, forestry and mining.

Accepta 4302 is a highly efficient polymer based water retainer that, when incorporated into a soil or a substrate will absorb and retain large quantities of water and nutrients. Unlike most products that become hydrated, Accepta 4302 can easily release absorbed water and nutrients, thereby allowing crops to access the water and nutrients available at will, as a function of the absorption and release cycles.

Product Benefits

  • High performance super absorbent polymer based water retainer.
  • Increases the water holding capacity of soils for several years.
  • Reduces water loss, irrigation frequency may be reduced by 50%.
  • Limits losses of water and nutrient due to unwanted leaching.
  • Reduces evaporation of water from the soil.
  • Improves the physical properties of compact soils through improved aeration.
  • Accelerates plant and crop growth. Water and nutrients are continuously available in the root zone for optimal water and nutrient absorption.
  • Protects the environment against drought and groundwater pollution by controlling the release of fertilisers.

Product Properties

Form: Granular solid
Colour: White
Particle size (mm): 0.5 – 3.0
Ionic Character: Anionic
Active Ingredient (% solid content): 100
Moisture Content: 10
Approx. bulk density (g/cm3): 0.8
Usable pH range: 5 – 9
Solubility in water:  Insoluble
Shelf Life* (years): 5

* When stored inside a building at a stable temperature between 0° and 35°C

Full details of the product properties are available in the Safety Data Sheet. See below.

Typical Characteristics

Maximal absorption *
De-ionised water: 300
Water with 1,000 ppm of NaCl: 150
In the soil:    150 – 200
Time to reach 60% of max. absorption (minutes): 60
Stability of swollen product in sandy soil (years): 3 - 5

* in weight of retained water / weight of dry product measured under a pressure of pF3 = 2 atm.

Application & Dosage Information

Mixed to substrates (sand, peat,compost) (kg/m3): 2 – 3
Mixed to clayey and silty soils (kg/m3): 1 – 2
Broadcast (g/m2): 50 - 100

Rates vary accordingly to the conditions of the soils, crops and water supplies (rainfall or irrigation, quantities and frequencies).

How it Works

The high performance polymer used in Accepta 4302 consists of a set of polymeric chains that are parallel to each other and regularly linked to each other by cross-linking agents, thus forming a network.

When water comes into contact with one of these polymeric chains, it is drawn into the molecule by osmosis.

Water rapidly migrates into the interior of the super absorbent polymer network where it is stored. As the soil or substrate dries out, the polymer then releases up to 95% of the absorbed water back into the soil.

Agriculture & Farming

Accepta 4302 super absorbent polymer is highly effective when used in large scale farming and agricultural applications, especially at the time of germination and development of the root network due to good aeration of the soil.

The storage of rainwater or irrigation water by Accepta 4302 delays the wilting point and thus makes it possible for certain plants to begin to be well established while waiting for the water regime to become adequate. Accepta 4301 ensures a good population and an even growth of plants even in very permeable soils.


Accepta 4302 is highly effective in the planting of trees, bushes, and saplings. It makes it possible to reduce the mortality rate of each crop due to transplanting shock and to enhance root development to accelerate growth and production.

Lawns & Sod

Water retainers are simple to use throughout the growth cycle of lawns and sod. They ensure effective germination, faster root development, and regular and even growth of lawns. The rooting of sod is also accelerated.

Accepta 4302 is widely used in landscaping for golf courses and grass in recreational parks and gardens.

Soil Mixes

When mixed into a substrate, Accepta 4302 acts as a super absorbent water retainer to provide a reduction in water stress. It ensures that plant cuttings and transplants take root better and that seedlings grow faster.

Irrigation frequencies are also extended to save water. It is an ideal solution in substrates for containers, hanging plants, and house plants.

Watering frequencies are commonly reduced by 30% to 50%, which likewise reduces labour costs and the amount of water used.

Mixing with Fertilisers

To reduce leaching of nutrients added to agricultural soils, Accepta 4302 may be mixed dry into fertiliser preparations.

The behaviour of plants fertilized with this mixture makes it possible to maintain or even increase
yield while at the same time protecting the environment from leaching. Manufacturers' test results also show better root development of the plants.

Floral Decoration

Accepta 4302 is commonly used for colouring the water in glass containers. Accepta 4302 in granules is allowed to expand in coloured solutions. The hydrogel created is placed in glass containers in which cut flowers may be placed.

Bare Root Dipping

Accepta 4302 can be used for root dipping in order to prevent the desiccation of the roots of seedlings during transplanting or transport over a long distance.

Application & Dosage Information

Please contact Accepta for the correct dosing procedure for Accepta 4302.

It is always advisable to carry out a 'Control Of Substances Hazardous to Health' (COSHH) assessment before use.

For further technical assistance please contact Accepta.

Safety, Storage & Handling

For full details concerning safety precautions, storage and handling procedures for Accepta 4302 please refer to the latest Safety Data Sheet. To download the latest safety data for this product use the following link:

Safety Data for Accepta 4302

World Class Expertise

Accepta work with industry worldwide delivering practical, cost effective solutions to resolve complex problems. If you require technical assistance, or information about our water treatment chemicals and other speciality products, please contact our dedicated technical support team on:

+44 (0) 845 519 89 90 or complete our Technical Support form.

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Custom Chemical Manufacturing

Accepta offer custom chemical manufacturing, specialist toll blending and white label production services for our own water treatment chemicals and client specific formulations to UK and international customers.

To discover how you could benefit from our environmentally sensitive, quality driven chemical manufacturing capabilities please call us on +44 (0) 161 877 2334 or contact us.

International Distributor Opportunities

Accepta's innovative, quality driven customer focused business model creates exciting global supply chain and distributor opportunities for established and ambitious businesses currently active within the water treatment, wastewater treatment and environmental services sectors around the world.

If you are interested in becoming an exclusive international distributor of Accepta water treatment technologies please click here to learn more.

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