Water Retainer


Water Retainer(Super Absorbent Polymer,SAP ) is a polymer of Potassium Polyacrylate,has the property of easily releasing the absorbed water and nutrients, thereby allowing the plant to have water and nutrients available at will as a function of the absorption-release cycles.



Partical size



Effectiveness in soil


Silway Water Retainer

White granules/powder

20-40 Mesh

40-60 Mesh

Broadcast on soil: 20 to 50 g/m2

Up to 4 years



Methylated Seed Oil Surfactant 


Methylated Seed Oil Surfactant is blend of Methylated soybean oils and silicone surfactant(emulsifier).  It is low viscosity fluids which have low volatility, good solvent and super spreading properties. These characteristics enable these oils to coat leaf surfaces, soften, penetrate and spread through the waxy leaf cuticles.  Enhance pesticides performance under a wider range of weather conditions compared to ordinary MSOs and COCs




Active Content

Viscosity (25°C,cp)

Silway MSO

yellowish transparent liquid




Heptamethyltrisiloxane contains highly active silicon hydrogen bonds, it is the basic raw material for the synthesis of modified trisiloxane. Modified trisiloxane is a structurally specific surfactant with superior wetting and spreading properties that significantly reduces the surface tension of the system.

Raw material for the synthesis of silicone surfactants

Product Appearance Active Content CAS NO.
Heptamethyltrisiloxane Colorless transparent liquid 99.0 1873-88-7

For MSDS and more questions, pls contact us




The Way of Silicone Innovation

Hangzhou Silway New Material Technology Co.,Ltd. Founded in 2014, is a young but fast-growing Others manufacturer specialized in the research, development, production and marketing of Others.

Silway focused on the modified siloxane and formulation technology, product line covers from agricultural silicone adjuvant, silicone water repellent, cosmetic silicones, sealant & additive, modified siloxane for die-casting.etc.

  • R&D

    Founders have over 20 years’ technical experience in silicone industry

  • Quality

    ISO9001 Certificated

  • Service

    Sales for international market all have at least 5 years experience, easy to communicate and professinal in silicone industry.

  • OEM

    Offer OEM service and customized products.

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Others Industry Knowledge Extension

Here are some general guidelines for using water retainers :
1. Application Rates: The application rate of water retainers can depend on the soil type, the desired moisture level, and the water-holding capacity of the product. In general, 1 to 3 grams of water retainer per liter of soil is a common recommendation.
2. Mixing and Application: Water retainers should be mixed thoroughly with soil before planting. A common approach is to mix the product with the top 10-15 cm of soil at the desired rate. Water retainers may also be mixed with irrigation water and applied as a drench to established plants.
3. Watering Practices: To maximize the effectiveness of water retainers, it is important to adjust watering practices to minimize water loss due to evaporation and runoff. Water should be applied slowly and at the base of the plant to allow for maximum absorption.
4. Reapplication: Water retainers are typically effective for several months to a year, depending on the product and environmental conditions. Reapplication may be necessary to maintain optimal moisture levels in the soil.
5. Compatibility: Water retainers may interact with other soil amendments or fertilizers. It is important to consult the product label or manufacturer for compatibility information before mixing different products.
6. Safety: When using water retainers, it is important to follow safety guidelines, such as wearing protective clothing and gloves, and avoiding inhalation or ingestion of the product. Water retainers should also be stored in a cool, dry, and ventilated area away from children and pets.
Overall, the effectiveness of water retainers can depend on various factors, such as the type of soil, plant species, weather conditions, and application rate. Proper usage and management of water retainers can help to improve water efficiency in agriculture and gardening, leading to healthier plants and better yields.
Principle of water retainer
The principle of water retention products is to increase the ability of soil to hold water and nutrients, allowing plants to access them over a longer period of time. Water retainers, also known as hydrogels, are a type of soil amendment that absorbs and holds water like a sponge, releasing it slowly as plants need it. This can reduce the amount of watering needed, as well as minimize the loss of water and nutrients due to evaporation, leaching, or runoff.
Water retainers are typically made from a cross-linked polymer that has the ability to absorb many times its weight in water. When mixed with soil, the hydrogel particles form a network of water-holding reservoirs that can provide a continuous source of moisture for plant roots. The hydrogel particles also create channels for air and water to flow through, improving soil aeration and drainage.
The effectiveness of water retainers can depend on various factors, such as the type of soil, plant species, and environmental conditions. For example, in sandy soils with low water-holding capacity, water retainers can improve soil structure and increase the availability of water for plants. In clay soils with high water-holding capacity, water retainers may be less effective, as the soil can become too waterlogged, leading to root suffocation and other problems.
Overall, water retainers can be a useful tool for improving water efficiency and plant growth in agriculture, horticulture, and landscaping. Proper selection and application of water retention products can help to optimize soil moisture, minimize water use, and reduce the risk of drought stress or water-related plant diseases.

What are the functions of a water retainer?
Water retainers , also known as hydrogels, are soil amendments that have several functions related to soil and plant water management. Here are some of the main functions of water retainers:
1. Water retention: The primary function of water retainers is to absorb and hold water in the soil, increasing the soil's water-holding capacity and allowing plants to access moisture over a longer period of time. This can reduce the frequency and amount of watering needed, as well as minimize water loss due to evaporation, leaching, or runoff.
2. Nutrient retention: Water retainers can also absorb and hold nutrients in the soil, allowing them to be released slowly as plants need them. This can improve plant growth and reduce the risk of nutrient loss due to leaching or runoff.
3. Soil structure improvement: Water retainers can improve soil structure by increasing the porosity and water-holding capacity of the soil. This can improve soil aeration and drainage, as well as reduce soil compaction and erosion.
4. Drought tolerance: Water retainers can help plants to better tolerate drought conditions by maintaining soil moisture levels during dry periods. This can reduce water stress on plants and improve their ability to withstand heat, wind, and other environmental stresses.
5. Water-use efficiency: Water retainers can improve water-use efficiency by reducing the amount of water needed to maintain plant growth and productivity. This can save water resources and reduce water-related expenses in agriculture, landscaping, and other applications.