Sodium polyacrylate

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Sodium polyacrylate
Sodium polyacrylate skeletal.png
Sodium polyacrylate.jpg
Identifiers
CAS number 9003-04-7 YesY
PubChem 4068533
ChemSpider 22446 YesY
Jmol-3D images Image 1
Properties
Molecular formula (C3H3NaO2)n
Molar mass Variable
Density 1.22 g/cm3
Hazards
MSDS MSDS
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

Sodium polyacrylate, also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [-CH2-CH(COONa)-]n and broad application in consumer products. It has the ability to absorb as much as 200 to 300 times its mass in water. Sodium polyacrylate is anionic polyelectrolytes with negatively charged carboxylic groups in the main chain. While sodium neutralized polyacrylic acids are the most common form used in industry, there are also other salts available including potassium, lithium and ammonium.

Applications[edit]

Sodium polyacrylate and other derivatives of polyacrylic acid have a wide variety of commercial and industrial uses that include:

See also[edit]

  • Polyacrylamide can be co-polymerized with acrylic acid and other monomers. In cross-linked form, these blended co-polymers can yield specialty superabsorbent polymers.
  • Polyacrylic acid

References[edit]

  1. ^ "What are the components of a typical disposable diaper?", Frequently Asked Questions about Disposable Diapers. The Disposable Diaper Net (Richer Investment Diaper Consulting Services). Accessed 29 April 2009.
  2. ^ History of Super Absorbent Polymer Chemistry, M2 Polymer Technologies, Inc. Accessed 29 April 2009.