1️⃣ Introduction to Alginic Acid

Alginic Acid is a natural, high-molecular-weight polysaccharide extracted from brown seaweed (Laminaria japonica & Sargassum). It is widely used in food, pharmaceuticals, biotechnology, and industrial applications due to its gel-forming, thickening, stabilizing, and film-forming properties.

Alginic acid, named as Alginate, is a natural polysaccharide extracted from seaweed. It is made of two types of aldehyde acids with D-mannose uronic acid and L-Gu Luo uronic acid.Its apperance is light yellow powder and insoluble.

It is also a significant component of the biofilms produced by the bacterium Pseudomonas aeruginosa, the major pathogen in cystic fibrosis, that confer it a high resistance to antibiotics and killing by macrophages. 

At Chibio Biotech, we provide high-quality Alginic Acid powder suitable for various functional applications​.

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2️⃣ Product Overview – Alginic Acid

Type	Appearance	Viscosity (1% solution, mPa.s)	Applications
Alginic Acid Powder	White to light yellow powder	≤50 mPa.s	Food additives, pharmaceuticals, industrial applications

Key Features:

• ✅ Derived from 100% natural seaweed.
• ✅ Acidic polysaccharide with strong water-absorbing & gel-forming properties.
• ✅ Almost insoluble in ethanol and organic solvents but swells in water to form a gel.
• ✅ Meets food safety & industry standards​.

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3️⃣ CAS Number & Chemical Information

• Alginic Acid: CAS 9005-32-7
• Molecular Formula: (C₆H₈O₆)n

Alginic Acid is a natural hydrophilic colloid with excellent film-forming, thickening, and moisture retention capabilities​.

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4️⃣ Specifications & Solubility

Property	Specification	Result
Appearance	White to light yellow powder	Complies
Viscosity (1% solution, mPa.s)	≤50	12
Particle Size	As per demand	120 mesh
Acid Value	≥230	247.1
Assay	19.0-25.0%	22.4%
Loss on Drying	≤15%	10.9% (105ºC, 4 hours)
Total Ash	≤4.0%	1.0%
pH (3% aqueous solution)	1.5-3.5	2.6
Chloride	≤1%	0.1%
Heavy Metals (As, Pb, Sum)	≤3.0 ppm, ≤10.0 ppm, ≤40.0 ppm	Complies
Microbiological Quality	Total Plate Count ≤200 cfu/g, E. Coli & Salmonella Negative	Complies

• Storage Conditions: Cool & Dry, away from direct light.
• Packaging: 25 kg drums or per customer’s requirements​.

Solubility of Alginic Acid

Alginic Acid is insoluble in water, ethanol, and most organic solvents, but it swells in water to form a gel-like structure.

Solvent	Solubility
Water	Insoluble, but swells to form a gel
Ethanol & Organic Solvents	Insoluble
Dilute Alkaline Solutions (e.g., NaOH, KOH)	Soluble, forms sodium alginate
Acidic Solutions (pH < 3.5)	Partially soluble, depending on pH

Key Notes on Solubility:

✅ In water, Alginic Acid absorbs water and forms a high-viscosity gel.
✅ In alkaline solutions, it converts into sodium alginate, which is fully water-soluble.
✅ In acidic conditions (pH 1.5–3.5), it can partially dissolve, but retains its gel-forming properties.

🔹 Application Tip: If water solubility is required, Alginic Acid should be neutralized with an alkaline solution to form sodium alginate, which is highly soluble in water.

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5️⃣ Benefits & Functions of Alginic Acid

✨ Food & Nutritional Benefits

• Acts as a thickening agent in dairy products, beverages & sauces.
• Used in food coating applications to enhance stability & texture.
• Functions as a gelling agent in meat processing & dessert formulations.

✨ Pharmaceutical & Biomedical Uses

• Used in drug delivery systems for controlled-release formulations.
• Aids in wound healing and tissue engineering.
• Forms bio-adhesive gels, enhancing oral & topical drug absorption.

✨ Industrial & Environmental Applications

• Utilized in textile printing & paper coatings.
• Helps in heavy metal ion absorption for wastewater treatment.
• Used in biodegradable film production for sustainable packaging.

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6️⃣ Applications of Alginic Acid

✅ Food Industry – Used in ice cream, yogurt, fruit coatings, and sauces.
✅ Pharmaceuticals – Included in controlled-release tablets, wound dressings, and drug encapsulation.
✅ Textile & Paper Industry – Provides binding & printing stability.
✅ Water Treatment – Helps in removal of heavy metal ions from wastewater.
✅ Cosmetics & Skincare – Used in moisturizing gels, masks & anti-aging formulations.

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7️⃣ Why Choose Chibio Biotech?

• 🏆 Global Leader in Hydrocolloids & Functional Ingredients.
• ✅ Certified Quality – Complies with USP, ISO, Food-Grade & Pharmaceutical Standards.
• 🌱 Eco-Friendly & Sustainable – 100% natural, biodegradable & non-toxic.
• 📦 Flexible Supply & OEM Customization – Available in bulk & private labeling.

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8️⃣ Why Your Business Needs Alginic Acid?

🔹 Essential in Food, Pharmaceuticals & Industrial Applications – Used for stabilization, thickening, gelling & film-forming.
🔹 Scientifically Proven Benefits – Supports drug delivery, biomedicine & sustainable industries.
🔹 Versatile & Cost-Effective – Available in customized grades for diverse applications.
🔹 Stable & Long Shelf Life – Ensures high purity, consistent performance & excellent storage stability.

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🔟 Call-to-Action: Get Premium Alginic Acid Today! 🚀

Looking for high-quality Alginic Acid for food, pharmaceuticals, or industrial applications?

📩 Email: sales@chibiotech.com
📞 Phone: +86 (0)532 66983270
🌍 Website: www.chibiotech.com

✅ Enhance your formulations with Chibio Biotech’s premium Alginic Acid! 🌿✨

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Please view more details about alginate-related products:

Alginic Acid

Sodium Alginate

Alginate Oligosaccharide

Comparison of Alginic Acid, Sodium Alginate, and Alginate Oligosaccharide