Alginic acid CAS# 9005-32-7

Alginic acid, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: White or pale yellowish-bro
  • Assay: 100%min
  • Packaging: 25kg /laminated paper bag.
  • Sample: Available

Quality Control of Alginic acid

Chemical Structure
Alginic acid CAS# 9005-32-7
Packing of Alginic acid

Description of Alginic acid

Alginic acid, also called algin or alginate, is an anionic polysaccharide distributed widely in the cell walls of brown algae, where through binding with water it forms a viscous gum. It is also a significant component of the biofilms produced by the bacterium Pseudomonas aeruginosa, the major pathogen in cystic fibrosis, that confer it a high resistance to antibiotics and killing by macrophages. Its colour ranges from white to yellowish-brown. It is sold in filamentous, granular or powdered forms.

Basic Info of Alginic acid

Basic Info

Chemical Name

alginic acid

Synonyms

 

CAS No.

9005-32-7

Molecular Formula

C6H10O7

Molecular Weight

194.13900

PSA

127.45000

LogP

-3.12910

 

Numbering system

UNII

8C3Z4148WZ

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What is Alginic acid ?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Alginic acid which has developed particularly rapidly in recent years. Do you know about Alginic acid?

 

The official answer: Alginic Acid is a naturally occurring polysaccharide aldehyde acid found in the cell walls of brown algae such as kelp and macroalgae. Chemical formula (C6H8O6)n [1-2]. It is a linear copolymer formed by the 1,4-bonding of β-D-mannuronic acid (M) and α-L-gluonic acid (G). The amount of G and M in alginate has a significant effect on the glue-forming properties of the fibers. Alginate is present in the cytoplasm in its natural state and acts as a cell wall reinforcer. Alginic acid combines with various cations in seawater to form various alginates. The extract obtained from seaweed is usually sodium alginate. With its properties of thickening, suspending, emulsifying, stabilizing, forming gels, forming films, and spinning fibres, sodium alginate has a long and wide range of uses in the food, paper and make-up industries, and in recent years in particular has found important uses in the field of biomedical engineering.

What’s the application of Alginic acid ?

Alginate is a viscous organic acid, also known as fucoidan and alginic acid. The product is a white to light yellowish-brown powder. The average molecular weight is about 240,000. Melting point >300°C. Slightly soluble in hot water, its viscosity in aqueous solution is 4 times higher than that of starch, insoluble in cold water and organic solvents, slowly soluble in alkaline solutions. Odorless. It is widely found in nature in the cell walls of hundreds of brown algae such as macroalgae, kombu, kelp, Murray’s algae, and Sargassum, with a higher content in kombu family algae (about 20% on average), mostly in the form of calcium and magnesium salts. Alginate is a straight-chain block polyglyoxalate consisting of a homopolymerized α-L-Gulo-gulo block, a homopolymerized β-D-mannopyranosylate block, and a crosspolymerised block of these two glyoxalates linked by a 1,4-glycosidic bond. Present in the cell walls of many marine brown algae in the form of calcium, magnesium, sodium, potassium, and strontium salts. Industrially derived from macroalgae, kelp of Kraughtsman, palm kelp, sugar kelp, sea kelp, cuneiform kelp (L. ochotensis), narrow-leaved kelp, vesicular algae (Ascophyllumrodosum), ditch deerstalker, inkhorn algae (Fucusvesiculosus), toothed-edge blackthorn algae, sea, hollow-stemmed kombu and wing algae ( ChemicalbookAlaria). The general extraction method is: the raw seaweed is washed, digested with alkali to produce soluble alkali metal salts, filtered, and acid added to precipitate the fucoid acid. Fucoidan can also be converted into sodium, potassium, ammonium, calcium salts, or other organic derivatives, collectively known as fucoidan (again). Commercial fucoidan mainly refers to sodium fucoidan. Free fucoidan is a white solid. It is insoluble in cold water and slightly soluble in hot water. It is highly acidic and acid-resistant but is easily decomposed by hot bases. Decarboxylation occurs by the action of concentrated hydrochloric acid. It has some selective adsorption for metal ions, especially Fe(II) ions. Its alkali metal salts and ammonium salts dissolve in water to produce a viscous liquid but do not easily produce a gel. Below pH 3 it is converted into insoluble fucoidan gels or precipitates. The addition of multivalent metal ions (e.g. calcium chloride) makes it easy to gel. The sodium salt is a slightly yellow powder, insoluble in organic solvents, [a]D-139°. Fucoidan is widely used in the food, textile printing and dyeing, paper, pharmaceutical, leather, cosmetic, rubber, paint, and water treatment industries. Alginate is mainly used as a raw material for salts such as sodium alginate and the manufacture of drugs such as gastrodia. It is also used as an excipient, binder, and stabilizer for tablets. In food and cosmetics, it is often used as a thickening agent and emulsifier.

Alginate is a viscous organic acid, also known as fucoidan and alginic acid. The product is a white to light yellowish-brown powder. The average molecular weight is about 240,000. Melting point >300°C. Slightly soluble in hot water, its viscosity in aqueous solution is 4 times higher than that of starch, insoluble in cold water and organic solvents, slowly soluble in alkaline solutions. Odorless. It is widely found in nature in the cell walls of hundreds of brown algae such as macroalgae, kombu, kelp, Murray’s algae, and Sargassum, with a higher content in kombu family algae (about 20% on average), mostly in the form of calcium and magnesium salts. Alginate is a straight-chain block polyglyoxalate consisting of a homopolymerized α-L-Gulo-gulo block, a homopolymerized β-D-mannopyranosylate block, and a crosspolymerised block of these two glyoxalates linked by a 1,4-glycosidic bond. Present in the cell walls of many marine brown algae in the form of calcium, magnesium, sodium, potassium, and strontium salts. Industrially derived from macroalgae, kelp of Kraughtsman, palm kelp, sugar kelp, sea kelp, cuneiform kelp (L. ochotensis), narrow-leaved kelp, vesicular algae (Ascophyllumrodosum), ditch deerstalker, inkhorn algae (Fucusvesiculosus), toothed-edge blackthorn algae, sea-, hollow-stemmed kombu and wing algae ( ChemicalbookAlaria). The general extraction method is: the raw seaweed is washed, digested with alkali to produce soluble alkali metal salts, filtered, and acid added to precipitate the fucoid acid. Fucoidan can also be converted into sodium, potassium, ammonium, calcium salts, or other organic derivatives, collectively known as fucoidan (again). Commercial fucoidan mainly refers to sodium fucoidan. Free fucoidan is a white solid. It is insoluble in cold water and slightly soluble in hot water. It is highly acidic and acid-resistant but is easily decomposed by hot bases. Decarboxylation occurs by the action of concentrated hydrochloric acid. It has some selective adsorption for metal ions, especially Fe(II) ions. Its alkali metal salts and ammonium salts dissolve in water to produce a viscous liquid but do not easily produce a gel. Below pH 3 it is converted into insoluble fucoidan gels or precipitates. The addition of multivalent metal ions (e.g. calcium chloride) makes it easy to gel. The sodium salt is a slightly yellow powder, insoluble in organic solvents, [a]D-139°. Fucoidan is widely used in the food, textile printing and dyeing, paper, pharmaceutical, leather, cosmetic, rubber, paint, and water treatment industries. Alginate is mainly used as a raw material for salts such as sodium alginate and the manufacture of drugs such as gastrodia. It is also used as an excipient, binder, and stabilizer for tablets. In food and cosmetics, it is often used as a thickening agent and emulsifier.

Conclusion

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