Food-Grade Synthetic Amorphous Silica INS 551 / JECFA Grade — Grain Storage Inert Dust 1. Product Advantages Zhongqi Guangdong Silicon Material Co., Ltd. offers JECFA-grade synthetic amorphous silica (INS 551), a high-purity food-grade inert dust designed for safe grain storage protection. The product complies with JECFA food additive specifications, FDA 21 CFR food contact requirements, GB 25576-2020 and LS/T 1227-2022 standards, making it suitable for direct contact with stored grain, flour, rice and feed materials. This silica addresses key challenges in traditional grain protection, including chemical pesticide residues, pest resistance, equipment corrosion and inconsistent long-term efficacy. Instead of relying on chemical fumigants or synthetic pesticides, it works through a pure physical mechanism: the fine silica particles attach to the insect cuticle, abrade the wax layer and cause fatal dehydration. This mode of action minimizes chemical exposure risks while maintaining reliable pest control performance. Key advantages include: - JECFA INS 551 food-grade safety profile Meets international food additive requirements with ultra-low heavy metal levels (Pb ≤10 ppm, As ≤3 ppm). - FDA 21 CFR food contact compliance Suitable for use in grain storage facilities where food contact safety is required. - Residue-free physical pest control No chemical toxins, no fumigation, no pesticide residues on raw grain. - Avoids pest resistance Physical mode of action reduces the risk of resistance development compared with repeated chemical treatments. - Broad-spectrum efficacy Effective against major stored-grain pests, including Sitophilus oryzae, Sitophilus zeamais, Tribolium castaneum, Rhyzopertha dominica and Plodia interpunctella. - Long-lasting protection Provides 6–12 months of stable efficacy under dry storage conditions. - Non-corrosive to storage equipment Chemically inert formulation helps protect steel silos, ventilation ducts and monitoring systems. - Controlled particle size for flexible application D50 3–12 μm adjustable for aerosol spraying, grain admixture and barrier line treatment. - GMP-based manufacturing Produced in a GMP-certified facility to support consistent food-grade quality. - Technical support available Pre-sales sampling, application testing and on-site technical guidance are provided. - Wide industry coverage Suitable for grain depots, flour mills, rice processing plants and feed storage operations, with export markets covering Southeast Asia, Europe, the Americas, the Middle East and Russia/CIS. --- 2. Factory Advantages Zhongqi Guangdong Silicon Material Co., Ltd. is a national high-tech enterprise and a Guangdong provincial specialized, refined, unique and innovative enterprise, with over 20 years of focus on silicon-based material R&D and production. The company holds 17 independently developed patents and operates a GMP-standard production base dedicated to food-grade silica additives. Its laboratory is equipped with advanced testing instruments, including atomic fluorescence spectrometers, laser particle size analyzers and BET surface area analyzers. A total of 26 inspection procedures are implemented throughout the production process, covering raw material incoming testing, process monitoring and finished product verification. The factory has obtained ISO22000 food safety management system certification, enabling full traceability from silica raw material to final packaging. --- 3. Packaging and Shipping - Standard packaging 10 kg / 25 kg woven bags with food-grade PE inner liner. 1000 kg jumbo bags are available upon request. - Sealed moisture-proof design Composite film valve bag with outer PE layer, or PE inner film bag plus plastic woven bag. The packaging is fully sealed to reduce moisture ingress during ocean transportation. - Storage and transportation Store in a cool, dry environment with relative humidity below 70%. Avoid direct sunlight and high temperature. Shelf life: 24 months. Classified as non-hazardous, non-flammable and non-corrosive, supporting global sea, air and land transportation without dangerous goods surcharges. - Labeling Each package includes food additive information, CAS No. 7631-86-9, INS 551, production license number, batch number and net weight. Custom private labeling is available according to customer requirements. - Application dosage reference In accordance with LS/T 1227-2022: - Empty warehouse aerosol: 0.25–0.5 g/m³ - Grain admixture: ≤1.2 g/kg - Barrier lines: 120 g/m² --- 4. Qualifications and Honors - JECFA Grade Compliance (INS 551) - FDA 21 CFR Food Contact Substance Compliance - FSSC22000 - ISO22000:2018 - ISO9001:2015 - SHC HALAL - OU KOSHER - FAMI-QS - SEDEX - Food Additive Production License - Feed Additive Production License - National High-Tech Enterprise - Guangzhou Specialized, Refined and Innovative Enterprise - 17 Patents from the State Intellectual Property Office - Compliance with LS/T 1227-2145 Technical Specification for Inert Dust Pest Control in Grain Storage