Water Absorbing Material – Sodium Polyacrylate

Traditional Water Absorbing Materials

Mention about the water-absorbing material, you may think of many absorbing materials such as cotton, napkins, sponge, anhydrous calcium chloride, soda lime, allochroic silica gel, or activated carbon.

But these materials can absorb only several or dozens of times its weight. And most of them will release the water under pressure.

Is there a water-absorbing material that can absorb huge water under pressure?

Sodium Polyacrylate

As the water-absorbent material in paper diapers, Sodium Polyacrylate can absorb hundreds of times its weight.

After absorption, it will turn to water gel which can lock water strongly under pressure.


| High absorption.

Sodium polyacrylate can absorb about 300-800 times its weight. This is the most difference between this kind of polyacrylate and other traditional absorption materials.

| High absorbent rate.

It only takes several seconds to absorb all the water. Actually, the absorbent rate is a very important item for absorption material.

| Strong liquid-locking ability.

As we mentioned earlier, it has a strong liquid-locking ability — that why it’s more and more popular used in diapers as the absorbing material.

| Non-toxic.

This material is totally non-toxic and harmless. Actually, this new function material is already used in artificial vitreous and artificial skin.

| Nonpolluting.

Sodium polyacrylate is eco-friendly and can be decomposed into water, carbon dioxide, and ammonia.

As we see, Sodium polyacrylate is an amazing material. It can be applied to all aspects of life to absorb & hold water.


  • It’s not a good choice to use sodium polyacrylate retaining water in the soil for plants. As another superabsorbent polymer, potassium polyacrylate is mainly used as a water-retaining agent for plants in agriculture.
  • Common sodium polyacrylate does not absorb oil.

Mainly Applications

Hygiene Products

It’s mainly used in Hygiene Products such as Diapers, Sanitary Napkins, Nursing pads, and Pet pads, etc.

Ice Bag

The single sheets of Ice packs are activated by placing them in fresh tap water.

Water Absorbent Pad

SAP brings a new, specially developed absorbent layer that helps consumers simulate a dry process in vacuum packaging – with amazing results.

Gel Polymer Beads

Water beads are made of SAP. It can absorb a large amount of water and turn into a bigger ball.


Used in waterproof tape and waterproof ointment for use in optical fiber cables.

Anti-flood Bag

SAP in an anti-flood bag absorbs the water completely in 3 to 5 minutes when meets water and the bag will inflate quickly. Before absorbing water, the bag is small and light.


SAP Drilling Mud Additive (SNA-505) which is a new environmental protection product with good water-absorbable and swellable properties, can effectively against lost circulation.


-It with fibrous shapes potentially can be used to make high.
-Can be used as an internal sealant in cement-based materials.
-A special use of SOCO Polymer in concrete could be as a controlled release agent.

Sewage Treatment

SAP is a cost-saving alternative to other bulk solidifiers, including Portland cement, kiln dust, corn-cobs, sawdust, or other commodity absorbents.

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