What is Sodium alginate CAS 9005-38-3?
Sodium alginate CAS 9005-38-3 is the sodium form of alginate, a linear anionic polysaccharide mainly obtained from brown seaweed. It appears as a white to off-white powder and forms a viscous colloidal solution in water. Because of its ability to thicken, stabilize, emulsify, suspend, and form gels in the presence of multivalent ions such as calcium, it is widely used in food processing, pharmaceutical formulations, dental materials, wound dressings, hydrogels, and encapsulation systems.
Specifications
| Property |
Value |
| Appearance |
White to off-white powder |
| Melting Point |
99 °C |
| Density |
1.0 g/cm3 (25 °C) |
| pH |
6.0–8.0 (10 mg/mL in H2O) |
| Storage Conditions |
Store at 2–8 °C |
Features
- Excellent Thickening and Stabilizing Performance: Sodium alginate is widely used as a thickener, stabilizer, emulsifier, and suspending agent because it readily forms viscous colloidal solutions in water.
- Strong Gel-Forming Ability: It forms irreversible gels in the presence of calcium salts or acids, which makes it highly suitable for dessert gels, puddings, toppings, edible films, and encapsulation systems.
- Natural Seaweed-Derived Polymer: Sodium alginate is extracted from brown seaweed and kelps, giving it strong relevance in natural polymer, food additive, and biomaterial applications.
- Broad Functional Utility in Medical and Delivery Systems: The reference page notes its use in wound dressings, hydrogels, microencapsulation, nanoparticles, sustained-release systems, mucoadhesive formulations, and tissue engineering matrices, showing high value in advanced pharmaceutical and biomedical research.
Applications
- Food Industry: Sodium alginate is used as a thickener, binder, gelling agent, emulsifier, and stabilizing colloid in dessert gels, puddings, sauces, toppings, edible films, ice cream, and soft drinks.
- Pharmaceutical Formulations: It is used as a binder and disintegrant in tablets, a diluent in capsules, a suspending and thickening agent in topical formulations, and in sustained-release, mucoadhesive, ophthalmic, nasal, and microencapsulated drug delivery systems.
- Medical and Wound Care Applications: Sodium alginate is used in wound dressing materials, surgical dressings, hemostatic systems, hydrogels, and tissue engineering matrices because of its gel-forming and biocompatible properties.
- Industrial and Technical Uses: It is also used in drilling muds, coatings, water-treatment flocculation, sizing agents, dental impression preparations, and membrane materials for pervaporation separation of aqueous-organic solutions.
Packaging
Mikem offers flexible packaging options, including 25 kg of fiber drums for liquid products and 15–25 kg PP/PE bags for powder products, all customizable to meet your specific needs.