Sodium polyacrylate

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What Wikipedia says

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.

Excerpt from the Wikipedia article “Sodium polyacrylate”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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