Sodium Alginate Alginic Acid Sodium Salt CAS 9005-38-3

• Customization: Available
• CAS No.: 9005-38-3
• Formula: (C6h7o6na)N
• Model NO.: 99%
• Appearance: White Crystal
• Grade Standard: Industrial Grade
• Transport Package: 25 Kg Per Bag
• Specification: ≥ 99%
• Trademark: JinYu
• Origin: China

Product Description

Product Description

Basic Information

• Chemical Name: Sodium Alginate (also known as Alginic Acid Sodium Salt, Sodium Algin)
• CAS Number: 9005-38-3
• Molecular Formula: (C6H7O6Na)n (where n is the degree of polymerization, typically 100-2000)
• Molecular Weight: Approximately 20,000-250,000 Da (varies with polymerization degree)
• Source: A natural polysaccharide extracted from brown algae (e.g., giant kelp, Laminaria).

Molecular Structure and Properties

• Structural Feature: A linear polymer composed of β-D-mannuronic acid (M units) and α-L-guluronic acid (G units) linked by 1,4-glycosidic bonds, with block distributions of M and G units in the chain.
• Physical Properties:
  • White to light yellow powder, odorless and tasteless;
  • Soluble in water to form a viscous colloidal solution, insoluble in organic solvents like ethanol;
  • Aqueous solution has a pH of 6-8, and viscosity increases with concentration, temperature, and molecular weight.
• Chemical Properties:
  • Reacts with divalent metal ions (e.g., Ca², Ba²) to form insoluble gels (the "egg-box model"), a property widely used in gel preparation;
  • Degradable by alginate lyase, biocompatible, and biodegradable.

Application Fields
1. Food Industry

• Thickener and Stabilizer: Used in ice cream, jelly, and salad dressings to improve texture, prevent ice crystal growth, or component sedimentation;
• Gel Formation: For bionic foods like artificial caviar, candy coatings, or cell immobilization (e.g., embedding probiotics);
• Dietary Fiber Supplement: Added to beverages and baked goods as a water-soluble fiber to enhance nutritional value.

2. Pharmaceuticals and Biotechnology

• Drug Carrier: Prepares microcapsules, sustained-release tablets, or wound dressings (absorbs moisture and promotes healing);
• Tissue Engineering: Crosslinks with Ca² to form hydrogels for cell culture scaffolds or 3D bioprinting;
• Hemostatic Material: Reacts with Ca² in blood to form gels, accelerating coagulation.

3. Industry and Environmental Protection

• Dyeing Auxiliary: Acts as a printing paste for reactive dyes to improve dyeing uniformity;
• Wastewater Treatment: Adsorbs heavy metal ions (e.g., Cu², Pb²) for water purification;
• Paper and Textile: Used as a sizing agent or adhesive to enhance paper strength and fabric hand feel.

4. Other Applications

• Agriculture: Seed coating (water retention for germination), pesticide slow-release carrier;
• Cosmetics: As a thickener and humectant in face masks and lotions;
• Laboratory Research: Prepares immobilized enzymes or supports for gel electrophoresis.

Safety and Regulations

• Toxicity: LD50 (rat, oral) >5000 mg/kg, a low-toxic substance with no carcinogenicity;
• Regulatory Approvals:
  • FDA GRAS (Generally Recognized As Safe) for food additives in the U.S.;
  • China GB 1886.234-2016 specifies its usage scope and limits in food;
  • Listed in the EU food additive list (E401) for various food categories.

Storage and Precautions

• Storage Conditions: Store in a sealed container in a dry, ventilated place, away from moisture and high temperatures (≤25ºC);
• Incompatibility: Avoid direct contact with divalent metal salts or strong acids to prevent gelation or precipitation;
• Dissolution Method: Slowly sprinkle the powder into stirred water to avoid clumping; heating to 60ºC can accelerate dissolution.

Sodium alginate, with its natural, safe, and processable properties, has become an indispensable functional polymer in food, medicine, industry, and other fields. Research on its derivatives and composite systems continues to expand its application boundaries.

Product Parameters

 

Packaging & Shipping

Liquid products	Drum of 5kg ,10 kg ,25 kg ,50 kg 200 kg ,250 kg . 1000 kg IBC drum. TANK with 20 tons ,25 tons .
Solid products	Bag of 1 kg ,2 kg ,5 kg ,25 kg ,500kg ,1000 kg . Drum of 25 kg and 50 kg.

Packaging can be customized according to customer requirements.

Company Profile

Qingdao Jinyu Chemical Co., LTD,which is located in Qingdao City, China, with registered capital of RMB 10 million, is a dynamic chemical import and export enterprise with customer demand as its own responsibility. The founder has been engaged in the chemical industry for more than 20 years. With professional technical and marketing personnel, diversified cooperative factories with synthetic technology and efficient logistics management, we provide services to customers all over the world. After years of hard work, we have selected a number of excellent chemical production cooperative enterprises in China. These enterprises have their own advantages in different chemical synthesis fields. They have passed the strict inspection of suppliers by many customers and formed a long-term and stable strategic partnership with customers. With our partners' excellent equipment, well-trained employees and mature technology, we also continue to provide customers with more products.

Our Advantages