Evonik SIPERNAT® 37 Food-Grade Silica Achieves Full Batch Compliance, Validating Rigorous Quality Standards

Evonik United Silica (Siam) Ltd. has published a new Certificate of Analysis (COA) for batch 544091631 of its SIPERNAT® 37 food-grade precipitated silica, confirming that all physicochemical and microbiological indicators meet international regulatory standards, with multiple core metrics outperforming specification requirements. The results underscore Evonik’s uncompromising quality control framework for food-grade silica products.

The tested batch demonstrates strong functional performance across key parameters. Its multi-point specific surface area falls within the certified 165–205 m²/g range, with a highly developed pore structure that underpins efficient adsorption performance. The measured DOA oil absorption value reaches 277 ml/100g, well within the 260–310 ml/100g specification window, supporting reliable liquid-to-powder conversion and robust anti-caking functionality. Tested via the Coulter LS method, the product has a median particle size of 20.6 μm, matching the 18.0–26.0 μm target range and delivering uniform particle distribution and excellent dispersibility in food matrices.

For critical quality control attributes, the batch records a loss on drying of just 4.3% after 2 hours at 105°C — far below the 8.0% maximum limit. This tight moisture control minimizes caking and agglomeration risks during long-term storage. Its 5% aqueous suspension registers a pH of 6.6, within the mild 5.0–8.0 range, ensuring broad compatibility with diverse food raw material systems without impacting original flavor or product characteristics.

On the microbiological safety front, the batch complies with USP and EP limits for total aerobic microbial count (TAMC) and total yeast and mold count (TYMC), with no specified pathogenic microorganisms detected. It fully aligns with JECFA specifications for silica used as a food additive, confirming its safety for all food processing applications.

As a flagship food-grade precipitated silica in Evonik’s product lineup, SIPERNAT® 37 delivers consistent batch-to-batch quality and holds comprehensive international compliance certifications. It serves as a versatile anti-caking agent, carrier and adsorption aid for powdered foods, nutritional supplements, flavorings and fragrances, providing food manufacturers worldwide with a trusted, high-performance functional ingredient.