Sodium alginate

Sodium alginate

Alginic acid sodium salt; Algin; Sodium polymannuronate

CAS 9005-38-3

Chemical Formula (C₆H₇NaO₆)n

Molecular Weight Variable (natural polymer, typically 10,000–600,000 Da)

Sodium alginate is a natural polysaccharide extracted from brown seaweed, commonly used as a thickening, gelling, and stabilizing agent in pharmaceuticals and food products. In drug formulations, it is often found in suspensions, gels, and controlled-release tablets due to its ability to form viscous solutions and gels in the presence of calcium ions.

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Industrial Uses

1. Pharmaceuticals

  • Binder and disintegrant in tablets: Helps tablets hold their shape and dissolve properly in the digestive system.
  • Controlled-release agent: Used in drug delivery systems to regulate the release of active ingredients over time.
  • Suspending agent in liquid medicines: Prevents solid particles from settling in syrups and suspensions, ensuring uniform dosing.

2. Food & Healthcare Ingredients 

  • Thickening agent: Adds viscosity to sauces, dressings, and desserts like puddings and jellies.
  • Stabilizer in ice creams and dairy products: Prevents separation and improves texture and mouthfeel.
  • Gelling agent (E401): Forms gels in the presence of calcium, useful in restructured foods and molecular gastronomy

3. Personal Care 

  • Film-forming agent: Creates a smooth, protective layer on skin or hair in products like face masks and shampoos.
  • Thickener in creams and lotions: Enhances texture and stability of emulsions for better application and sensory feel.
  • Moisturizing aid: Helps retain water, improving skin hydration and softness.

4. Fabric Solutions

  • Printing paste thickener: Used in textile printing to carry dyes and ensure sharp, consistent prints on fabric.
  • Sizing agent: Helps strengthen yarn and reduce breakage during weaving.

Specifications

Assay Typically 90–105% (on dry basis, based on alginic acid content)
Appearance White to yellowish-brown, odorless powder
Odor Odorless
Boiling Point Not applicable (decomposes before boiling)
Melting Point Not applicable (decomposes)
Density ~1.6 g/cm³ (bulk powder)
Solubility Soluble in water (forms viscous colloidal solution); insoluble in alcohols and organic solvents
Viscosity 20–1000 cP (depending on concentration and molecular weight)
Flash Point Not applicable (non-flammable solid)

FAQs

1. What is the current price of Sodium alginate in India?
The price of Sodium alginate can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Sodium alginate in India?
You can purchase Sodium alginate from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Sodium alginate?
Our minimum order quantity (MOQ) for Sodium alginate is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Sodium alginate supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.