Sodium Alginate 300-800CPS - High Purity for Food and Cosmetic Applications
Sodium Alginate 300-800 CPS is a refined, high-purity polysaccharide extracted from sustainably harvested brown seaweed (Phaeophyceae). With a controlled viscosity range of 300–800 centipoise (1% aqueous solution, 20°C), this versatile hydrocolloid serves as a critical texturizing agent in food innovation and cosmetic science. Its unique ability to form heat-stable gels, create protective films, and modify rheology makes it indispensable for clean-label, plant-based, and high-performance applications.
Core Functional Properties
1. Precision Viscosity Control
- Delivers 300–800 cP viscosity at 1% concentration (Brookfield LVF, spindle 3, 60 rpm)
- Exhibits pseudoplastic behavior with shear-thinning recovery >90% (ISO 2555)
- Maintains viscosity stability across pH 5–11 (FDA 21 CFR 184.1724 compliant)
2. Ion-Responsive Gelation
- Forms instant thermo-irreversible gels with calcium ions (0.2–2.0% Ca²⁺)
- Gel strength range: 100–500 g/cm² (Bloom method, calcium-dependent)
- Creates textures from soft thixotropic gels to firm elastic matrices
3. Film-Forming Superiority
- Produces oxygen-barrier films with WVTR <5 g/m²/day (ASTM E96)
- Enhances moisture retention in cosmetic masks (+40% vs. cellulose films)
- Edible packaging applications achieve tensile strength >25 MPa
4. Synergistic Performance
- Boosts foam stability with whey protein (overrun +30%)
- Enhances emulsion stability in oil-in-water systems (30% oil phase)
- Combines with pectin for acid-resistant fruit encapsulation
Technical Specifications
- CAS No.: 9005-38-3
- Appearance: White to cream-colored granular powder
- Particle Size: 80–120 mesh (150–180 μm)
- Moisture Content: ≤15% (ISO 1666)
- Ash Content: ≤25% (ISO 928)
- Heavy Metals: ≤10 ppm (Pb <3 ppm, As <1 ppm)
- Microbial Standards: TPC <5,000 CFU/g, E. coli absent/10g
Food Industry Applications
Dairy Alternatives
- Stabilizes plant-based cheeses (melt resistance up to 180°C)
- Prevents ice crystal formation in vegan ice cream (-18°C storage)
- Mimics creamy mouthfeel in low-fat yogurt formulations
Molecular Gastronomy
- Creates spherification membranes (2% alginate + 0.5% CaCl₂ bath)
- Enables fluid gel textures for avant-garde sauces
- Stabilizes edible cocktail pearls (>72-hour shelf stability)
Bakery Innovations
- Reduces oil absorption in fried coatings by 25%
- Extends bread softness (+5-day shelf life) through moisture control
- Binds water in gluten-free doughs (28% hydration improvement)
Processed Meats
- Enhances water-binding in injected poultry (+8% yield)
- Forms protective glaze on frozen seafood (30-cycle freeze-thaw stable)
- Reduces sodium content in sausages while maintaining juiciness
Cosmetic & Personal Care Applications
Skincare
- Forms breathable peel-off masks (drying time <15 minutes)
- Stabilizes O/W serums with 30% active ingredient load
- Enhances SPF retention in mineral sunscreens (COLIPA 2011 compliant)
Haircare
- Creates humidity-resistant styling gels (94% RH performance)
- Improves foam density in sulfate-free shampoos
- Reduces Frizz in leave-in conditioners (combing force -40%)
Advanced Delivery Systems
- Encapsulates retinol for stabilized delivery (85% retention at 40°C/3mo)
- Forms pH-responsive micelles for targeted actives release
- Creates biodegradable exfoliating beads (OECD 301F certified)
Quality & Regulatory Compliance
- FDA GRAS, EU Commission Regulation (EC) No 231/2012
- FSSC 22000 & ISO 9001 certified manufacturing
- Kosher (OU) and Halal certified
- Vegan Society registered
- MSC-certified seaweed sourcing
Sustainability Profile
- Carbon footprint: 0.8 kg CO₂eq/kg (cradle-to-gate)
- 100% biodegradable (OECD 301B, 60% degradation in 28 days)
- Zero wastewater discharge in production
- Supports coastal seaweed farming communities
Formulation Guidance
Standard Gel Preparation
- Hydrate 1–2% alginate in deionized water (40–50°C, 30 min)
- Add 0.1–0.5% calcium salt (lactate/gluconate for slow gelation)
- Adjust pH to 6–7 for optimal crosslinking
Synergistic Systems
- Plant-based cheese: 1.2% alginate + 0.3% κ-carrageenan
- Hydrating serum: 0.8% alginate + 1% hyaluronic acid
- Low-oil dressing: 0.4% alginate + 0.2% xanthan gum
Sodium Alginate 300-800 CPS bridges natural sourcing with cutting-edge functionality, empowering formulators to achieve texture innovation while meeting clean-label and sustainability targets. Its unique ionic reactivity and thermal stability enable breakthroughs in alternative protein development, reduced-additive cosmetics, and circular economy packaging solutions.
PSA | 130.28 |
XLogP3 | -4.4638 |
Appearance | White to Off-white powder |
Density | 1.0 g/cm3@ Temp: 25 °C |
Melting Point | 99 °C |
Water Solubility | soluble in water. Insoluble in alcohol, chloroform and ether. |
Storage Conditions | Store at RT. |
Toxicity | Oral-Rat LD50:> 5000 mg/kg; Abdominal-Mouse LD50: 500 mg/kg |
Flammability characteristics | It is flammable in case of open flame, high temperature and oxidant; burning produces sodium oxide-containing stimulating smoke. |
Toxicity class | moderately toxic. |



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