- Product Name: Alginic Acid
- CAS: 9005-32-7
- Catalog: HG-BULK042
- Applications: Pharmaceutical Industry, Food Industry, Environmental Applications.
Alginic acid, a natural polysaccharide derived from brown seaweed, is a versatile biopolymer. Alfa Chemistry offers high-quality alginic acid for a range of uses, including pharmaceuticals, food processing, and environmental solutions.
Key Features
Natural Source
- Alginic acid is extracted from seaweed.
Insolubility
- It is insoluble in water, which enhances its stability and performance in applications requiring controlled release, gel formation, and stabilization.
Biodegradable
- Alginic acid is biodegradable and non-toxic.
Technical Data
Items | Type I | USP30 | BP 2007 |
Starch | Do not show blue | -- | 19.0%-25.0% Carboxyl (dry group) |
Loss on drying | ≤ 15.0% | ≤ 15.0% | ≤ 15.0% |
Ignition residue | ≤ 5.0% | ≤ 4.0% | ≤ 8.0% (sulfate ash) |
Ph | 1.5-3.5 | -- | -- |
Ferric salt | ≤ 0.05% | -- | -- |
Arsenic | ≤ 0.0003% | ≤ 0.0003% | -- |
Heavy metals | ≤ 0.004% | ≤ 0.004% | ≤ 0.002% |
Acidity | ≥ 230 | ≥ 230 | -- |
Total bacterial count | -- | ≤ 200 | ≤ 200 |
E. Coli & Salmonella | -- | -- | Negative |
Applications
Due to its wide-ranging functional properties, alginic acid has found extensive use in the following fields:


Pharmaceutical Industry
- Tablet Disintegrant: Alginic acid is widely used as a disintegrant in oral tablets, aiding in the efficient breakdown of tablets in the digestive system.
- Emulsifier: It is used in pharmaceutical creams and ointments for its emulsifying properties, providing stable formulations for topical applications.
- Active Ingredient in APIs: Alginic acid serves as a key raw material in the production of certain pharmaceutical compounds, including polysaccharide sulfate (PSS).


Food Industry
- Food Additives: Alginic acid forms salts such as sodium alginate, potassium alginate, and calcium alginate, which are used as gelling agents and stabilizers in food processing.
- Dietary Supplements: As a fiber source, alginic acid is used in health supplements and as a bulking agent in tablet production.

Environmental Applications
- Water Purification: Alginic acid's adsorption properties make it an effective material for wastewater treatment and purification of industrial effluents, particularly in binding heavy metals and other contaminants.
Storage and Packaging
- Storage Conditions: Stored in a cool, dry, and light-protected environment.
- Packaging: Packaged in 25 kg paper-plastic composite bags.
Alfa Chemistry's high-quality alginic acid is a versatile material. Whether you're in pharmaceuticals, food processing, or environmental protection, alginic acid provides the functional performance you need for a wide range of applications. For more information, please feel free to contact us.