Alginic Acid
Algin, Polymannuronic acid, E400.
- CAS
- 9005-32-7
- EC
- 232-680-1
- Sectors
- Food & Nutrition, Pharma & Healthcare
Alginic Acid (CAS 9005-32-7) is a natural polysaccharide extracted from brown algae, supplied as a fibrous white to pale yellow-beige powder that swells in water and forms gels and hydrogels, and used as a thickener and stabilizer in food and as a disintegrant in pharmaceutical tablets. It is prized for its exceptional gelling and thickening properties when converted into various salt forms or hydrogels.
In its High Purity form, it is insoluble in water but swells significantly, acting as a powerful Disintegrant in pharmaceutical formulations. It provides a unique viscosity-modifying capability that is highly sensitive to pH levels and the presence of divalent cations.
Commercially, it is valued for its biocompatibility and film-forming ability, making it a sustainable choice for advanced material science. Its natural origin aligns with the growing industrial demand for green and renewable chemical feedstock
Typical Properties
| Appearance | white to pale yellow-beige powder |
|---|---|
| Form | Powder |
| Color | White to pale yellow to beige |
| Odor | wh. to yel. fibrous powd., odorless, tasteless |
| Melting point | 76 °C (approx) |
| Water solubility | Insoluble in water. |
| HS code | 39131000 |
| Grades available | Food Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Alginic Acid
Applications
- Pharmaceutical Disintegrant: Incorporated into tablet formulations to promote rapid breakdown in gastric fluids, ensuring faster active ingredient release.
- Wound Care: Used in the production of Alginate Dressings which provide a moist environment and facilitate healing through ion-exchange.
- Food Stabilization: Acts as a Thickener and stabilizer in jellies, sauces, and dairy products to maintain uniform texture and prevent syneresis.
Safety & Risks
Regarded as safe for food and medical use. Minimize dust inhalation to avoid Respiratory Irritation. Use standard Lab Coat and Safety Goggles. Hazard Classifications: Not classified as a hazardous substance.
Packaging
Typically packed in 25 kg Fiber Drums or Foil-lined Bags to protect against moisture absorption.