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Information @ a Glance

General

  • The chemical compound sodium alginate is the sodium salt of alginic acid.
  • Sodium alginate has no discernable flavor.
  • The alginate polymer itself is anionic (i.e., negatively charged) overall.
  • Alginates belong to the class of products known as hydrocolloids.

Extraction

  • Alginates are extracted from brown seaweed and are available in sodium, ammonium and potassium derivatives.
  • Its form as a gum, when extracted from the cell walls of brown seaweed .
  • A blend membrane of sodium alginate and “konkoli” gum-g-polyacrylamide (KG-g-PAAm) can be developed for bioremediation of wastewater.

Uses

  • Sodium alginate is a good chelator for pulling radioactive toxins such as iodine-131 and strontium-90 from the body.
  • Sodium alginate is used as a food additive, especially in the production of gel-like foods.
  • Sodium alginate is the most popular of the dye thickeners.
  • Sodium alginate works as a cold gelling agent that needs no heat to gel.

Market

  • Total world production of alginates is difficult to determine but, according to data supplied to us by Alginate Industries Limited, appears
    currently to be about 22,500 tonnes per annum.
  • The sodium alginate market caused ISP Alginates to reduce harvests by about 50 percent.

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