Transparent Toothpaste Grade Silica | Refractive Index Matched for Clear Formulations High-purity precipitated silica with precisely controlled refractive index, designed for transparent and translucent gel toothpaste. Excellent clarity, thickening performance and formulation stability, enabling premium clear toothpaste products with consistent visual appearance. Product Information Zhongqi Shandong Silicon Material Co., Ltd. specializes in high-precision transparent grade silica for premium oral care formulations. Our transparent silica is engineered with tightly controlled refractive index (1.445–1.455) matching common toothpaste humectant systems, delivering high clarity without cloudiness. Through precise control of particle size, porosity and surface chemistry, our transparent grade silica achieves both excellent rheological performance and high light transmittance, solving the common trade-off between clarity and thickening efficiency. We provide full formulation support for customers developing transparent toothpaste lines, including refractive index matching guidance and compatibility testing data. Transparent Toothpaste Grade Silica Parameters Item Specification SiO₂ Content (Ignited Basis) ≥ 97.5% Loss on Ignition (1000℃, 1h) ≤ 8.0% Moisture (As Packed, 105℃, 2h) 3.0 – 5.5% pH (5% Water Suspension) 6.4 – 7.2 Bulk Density 0.15 – 0.20 g/cm³ DBP Oil Absorption 200 – 240 cm³/100g Median Particle Size (D50) 4 – 8 μm BET Surface Area 160 – 200 m²/g Refractive Index 1.445 – 1.455 Light Transmittance (10% Slurry) ≥ 95% Whiteness (CIE L*) ≥ 97.0 Heavy Metal Limits Arsenic ≤1ppm, Lead ≤2ppm, Mercury ≤0.5ppm Total Aerobic Plate Count ≤ 50 cfu/g Core Material Amorphous precipitated hydrated silica Primary Application Transparent / gel toothpaste, premium clear oral care products Export Certification USP/NF, ISO 22000, GMP, HALAL, KOSHER Standard Packaging 10/15/20kg export-standard waterproof kraft paper bag Trade Terms FOB Qingdao / CIF destination port / DDP Qualifications and Honors •USP/NF Silicon Dioxide Monograph Compliance •ISO 22000:2018 Food Safety Management System •GMP Certified for Cosmetic Raw Materials •ISO 9001:2015 Quality Management System •SHC HALAL Certification •OU KOSHER Certification •3 Patents for Transparent Silica Production Technology •National High-Tech Enterprise of China •Premium Oral Care Raw Material Supplier Certification Product Features Precise Refractive Index Matching Tightly controlled RI range matching sorbitol, glycerin and other common humectant systems, enabling highly transparent paste without light scattering or cloudiness. High Clarity & Gloss Ultra-low impurity content and uniform particle size deliver excellent light transmittance, resulting in crystal-clear gel appearance and premium visual appeal. Balanced Thickening & Clarity Optimized pore structure achieves efficient thickening and suspension performance without sacrificing transparency, eliminating the traditional trade-off between functionality and appearance. Stable Color & Appearance Resistant to yellowing and discoloration over shelf life, maintaining consistent clarity and brightness even with added colorants and active ingredients. Product Advantages & Usage Instructions Core Advantages •Industry-leading refractive index control precision (±0.003 tolerance) •Excellent balance of transparency, thickening and mild cleaning performance •High purity and low ion content, preventing discoloration and formulation instability •Full formulation support including RI matching guidance and compatibility data •Customizable RI values for different humectant systems and formula designs Usage Instructions 1.Recommended addition ratio is 18% – 25% in transparent toothpaste formulas, adjust based on target clarity and viscosity. 2.Ensure formulation RI is matched with silica RI; test small batches before full-scale production. 3.Disperse silica slowly into humectant under high-speed stirring to avoid agglomeration and air bubbles. 4.Avoid excessive shear during processing which may damage particle structure and reduce clarity. 5.Store in dry, sealed conditions; moisture contamination will negatively impact transparency. Application Scenarios Premium Transparent Gel Toothpaste Designed for high-end clear toothpaste lines, enabling crystal-clear appearance with stable thickening and mild cleaning performance. Colorful Translucent Toothpaste Suitable for translucent colored toothpaste formulations, supporting vibrant, glossy visual effects without cloudiness. Luxury Oral Care Lines Ideal for premium positioning oral care brands, enhancing product shelf appeal through superior visual quality and texture. Natural & Organic Oral Care Compatible with natural and organic toothpaste formulations, meeting clean label requirements while maintaining transparent appearance.