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Food Grade Sodium Alginate Cosmetic Grade 25kg Sodium Alginate Powder. Natural Source: Extracted from kelp-like Phaeophyceae, a natural polysaccharide. High Viscosity: Viscosity ranges from 10 to 40000 cps depending on the grade. Versatile Gelling: Forms anti-reversible gels with calcium ions; rigidity varies by M/G ratio. Multi-Industry Use: Applicable in food, cosmetics, medical, and water treatment sectors. Food Grade Certified: Meets GB1886.243-2016 standards for food applications. Pharmaceutical Grade: Available with CP2015, EP9.0, USP40, and BP certifications. Rapid Dissolution: Easily dissolves in water to form high-viscosity solutions. Fast Delivery: Peak and off-peak season lead times are both within 15 workdays.