Alginic Acid

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[ CAS No. ] 9005-32-7
[ Molecular Formula ] (C6H8O6)n
[ Molecular Weight ] 10,000 – 600,000
[ Appearance ] White to Yellow, Fibrous Powder
[ Purity ] ≥99%

[ Function ]
1. It promotes plant growth, enhances stress resistance, and boosts photosynthetic activity.
2. Possessing antibacterial, anti-inflammatory, hemostatic, and analgesic properties, it is utilized in the preparation of controlled-release drug carriers, medical dressings, and tissue engineering scaffolds.
3. It serves as a carrier for anticancer and antitumor medications, thereby enhancing therapeutic efficacy while minimizing side effects.
4. Exhibiting thickening, stabilizing, and emulsifying properties, it is widely employed in the fields of food additives and functional foods.

[ Application ]
1. Food Industry:
It is frequently used as a thickening agent, stabilizer, and emulsifier in products such as ice cream, milkshakes, jams, and noodle-based foods; it serves to enhance texture and maintain structural stability.
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2. Pharmaceutical Field:
Pharmaceutical Excipients: Its viscous properties are utilized to serve as a binder or disintegrant in tablets, facilitating the dispersion of the medication within the body.
Medical Materials: It is processed into calcium alginate fibers for use in wound dressings, where it functions to promote hemostasis and accelerate healing; it is also employed in dentistry for creating dental impressions.
3. Agricultural Production: 
As a core raw material for functional liquid fertilizers, it is utilized in fertigation systems following enzymatic hydrolysis, helping crops withstand environmental stress and promote growth.

About Alginic Acid
Alginic acid is a natural polysaccharide extracted from brown algae, such as kelp. Possessing excellent water solubility, film-forming properties, biodegradability, and biocompatibility, it is commonly utilized as a food thickening agent and a pharmaceutical excipient.
In the food industry, alginic acid is widely employed in the processing of products such as dairy items, beverages, and baked goods, owing to its superior thickening, stabilizing, and gelling characteristics. It not only enhances the mouthfeel and texture of food but also contributes to its nutritional value. In the medical field, alginic acid serves as a drug carrier and wound dressing—applications that hold immense promise—due to its inherent biocompatibility and biodegradability.
Within the pharmaceutical sector, alginic acid is a frequently used excipient: its adhesive properties make it an effective binder for tablets; conversely, due to its ability to swell upon contact with water, it functions as a disintegrant to facilitate the dispersion of tablets within the human body. It is also utilized as a dispersing agent to distribute active ingredients into liquid media, thereby forming suspensions. Furthermore, alginates are employed as sustained-release agents for medications. In dentistry, alginic acid is used as a substitute for plaster and rubber in the fabrication of dental impressions. Alginic acid itself can also serve as an absorbent agent for the treatment of heavy metal poisoning.