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What is sodium polyacrylate?
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Sodium polyacrylate (ACR, ASAP, or PAAS),: 233 also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH 2 −CH(CO 2 Na)−] n and has broad applications in consumer products. This super-absorbent polymer (SAP) has the ability to absorb 100 to 1000 times its mass in water.
- Superabsorbent Polymer
Superabsorbent polymer powder. A superabsorbent polymer...
- Acrylate polymer
An acrylate polymer (also known as acrylic or polyacrylate)...
- Superabsorbent Polymer
Sodium polyacrylate (ACR, ASAP, or PAAS), also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH2−CH (CO2Na)−]n and has broad applications in consumer products. This super-absorbent polymer (SAP) has the ability to absorb 100 to 1000 times its mass in water.
Polyacrylic acid and its derivatives (particularly sodium polyacrylate) are used in disposable diapers. Acrylic acid is also the main component of Superabsorbent Polymers (SAPs), which are cross-linked polyacrylates that can absorb and retain more than 100 times of their own weight in liquid.
- (C₃H₄O₂)ₙ
- 618-347-7
- none
- variable
Sep 28, 2017 · This clever chemistry means that sodium poly(acrylate) can absorb and lock away huge amounts of water. It can hold up to 300 times its mass in the case of tap water (which contains other metal ions that compete with the hydrogen ions) or up to 800 times the mass of ion-free distilled water.
OVERVIEW. Sodium polyacrylate (SO-dee-um pol-ee-AK-ruh-late) is an odorless, grainy white powder. Its most impressive property is its ability to absorb large amounts of fluid, up to 800 times its volume of distilled water and lesser amounts of other liquid mixtures.
Sodium polyacrylate is an example of a super-absorbing polymer. It is a cross-linked (network) polymer that contains sodium atoms. It absorbs water by a process called osmosis. When the (sodium-containing) polymer is placed in contact with water, there is a tendency for the sodium to distribute equally between the network and the water.
