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| Model | ZLSIL-W58A/58A ZLSIL-W22S ZLSILW58E | Params | D50 14–19μm; BET 180–190 m²/g; pH 6.0–7.5; LOD≤6.5%; general-purpose, dose 0.2–1%. |
| Material | Precipitated amorphous silica (ZLSIL-W58/W22S-type), CAS 7631-86-9, E551. | Applicable Industry | Food powders, seasonings, instant drinks, chemical powders, feed premixes. |
Free Flow Agent Silica is high purity amorphous precipitated silica, tailor-made to serve as a high-performance anti-caking agent and flow aid for a wide range of food and animal feed powder formulations. Produced through carefully controlled wet precipitation and purification processes, this silica grade delivers consistent physical properties and reliable functional performance for powder systems prone to caking and poor flowability. The product possesses a unique porous microstructure that enables strong adsorption of surface moisture, free oils and volatile substances on fine powder particles. By forming a physical barrier between individual powder grains, it effectively stops particle agglomeration and lump generation during long-term storage and transportation. Even in environments with high humidity or fluctuating temperatures, our silica maintains stable free-flow characteristics, significantly optimising downstream operations including pneumatic conveying, automatic weighing, mixing and packaging. It helps reduce equipment blockage, minimise production downtime and improve the uniformity of final powder blends. A major advantage of our free flow agent silica is its low effective dosage. Only a small addition level is required to obtain outstanding anti-caking and flow-improving results. When blended with vitamins, mineral premixes, flavour powders, nutritional supplements and various feed additives, the silica achieves homogeneous dispersion throughout the whole system. It will not negatively interfere with active ingredients, nor change the inherent colour, flavour or nutritional value of your finished products. We maintain stringent impurity control throughout the whole manufacturing process. Heavy metals, soluble salts and residual contaminants are controlled at extremely low levels. This food and feed safe silica complies with international regulatory requirements. Certifications such as FSSC22000, OU Kosher and FDA 21 CFR are available to support global market access for food additives and animal nutrition applications. It demonstrates broad compatibility with most organic and inorganic powder raw materials. Particle size distribution, pore structure and oil absorption value remain stable across different batches, which is critical for steady continuous large-scale industrial production. We keep multiple standard grades in ready stock to meet regular orders. Customisation options are available for oil absorption capacity and particle size, to perfectly match your specific powder formulation requirements. Full COA documents are supplied for every shipment, and we are capable of providing stable bulk supply for long-term cooperation.

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