Alginic Acid

1,700.0012,000.00

Alginic acid is a natural sugary substance, found in brown seaweed. It acts like a thickening agent and forms a gel when it mixes with water. Alginic acid is used in many things we encounter everyday, like food, medicine, and even textiles.

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Alginic acid is a naturally occurring sugar molecule, also called a polysaccharide, found in brown seaweed. It's known for its gelling properties and is classified as a hydrophilic, meaning it loves water. Alginic acid itself isn't very soluble in water, but it can form viscous gels when it comes into contact with water.

Here's a breakdown of some key points about alginic acid:

  • Source: Brown seaweed (Phaeophyceae) [1]
  • Properties: Gelling, thickening, film-forming [5]
  • Structure: Long chain-like molecule (polymer) made of sugar units linked together [1]
  • Chemical composition: Mainly composed of two sugar acids, β-D-mannuronic acid and α-L-guluronic acid [1]
  • Uses: Food additive (thickener, stabilizer), dietary supplements, antacids, wound dressings [3, 8]

Alginic acid is a versatile substance with a wide range of applications.

Additional information

Weight N/A
CAS number

9005-32-7

Chemical formula

(C6H8O7)A(C6H8O7)B

Molar mass

NA

Physical state

Powder

Odor

ODORLESS

Melting point

>300°C

Boiling point

NA

Density

NA

Solubility in water

Solubility in water: insoluble.

Flash point:

NA

Autoignition temperature

NA

Vapor pressure

NA

UN number

NA

Flammability

NA

Carcinogenicity

NA

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