Toothpaste Grade Thickening Silica | Rheology Modifier & Suspension Stabilizer High-specific-surface-area precipitated silica designed for paste thickening and ingredient suspension. Excellent water holding capacity and rheology performance, ensuring uniform texture and long-term stability of toothpaste formulations. Certified by USP/NF and ISO 22000. Product Information Zhongqi Shandong Silicon Material Co., Ltd. is a leading Chinese manufacturer of functional thickening silica for oral care applications. Our thickening grade silica features high porosity and high oil absorption capacity, serving as a core rheology modifier in all types of toothpaste formulations. Produced via controlled precipitation technology, our thickening silica delivers efficient viscosity building at low addition levels, and effectively suspends abrasive particles, active ingredients and flavor components, preventing phase separation during storage. Our products are widely supplied to toothpaste manufacturers across over 30 countries, with consistent quality and full regulatory documentation supporting global market access. Toothpaste Grade Thickening Silica Parameters Item Specification SiO₂ Content (Ignited Basis) ≥ 97% Loss on Ignition (1000℃, 1h) ≤ 9.0% Moisture (As Packed, 105℃, 2h) 3.5 – 6.5% pH (5% Water Suspension) 6.3 – 7.2 Bulk Density 0.12 – 0.18 g/cm³ DBP Oil Absorption 240 – 280 cm³/100g Median Particle Size (D50) 3 – 6 μm BET Surface Area 200 – 250 m²/g Whiteness (CIE L*) ≥ 96.5 Viscosity Build Efficiency ≥ 30 Pa·s at 5% addition Heavy Metal Limits Arsenic ≤1ppm, Lead ≤3ppm, Mercury ≤1ppm Total Aerobic Plate Count ≤ 100 cfu/g Core Material Amorphous precipitated hydrated silica Primary Application Toothpaste thickener, suspension stabilizer, rheology modifier 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 •5 Patents for Thickening Silica Production Technology •National High-Tech Enterprise of China •Cosmetic Raw Material Safety Compliance Certification Product Features High Thickening Efficiency High porosity and large specific surface area deliver excellent water absorption and thickening performance, reducing required addition levels and optimizing formulation cost. Superior Suspension Stability Effectively suspends abrasive particles, active ingredients and insoluble components, preventing sedimentation and phase separation, maintaining uniform texture throughout 24-month shelf life. Smooth Paste Texture Fine particle size and controlled morphology contribute to a smooth, glossy paste appearance and pleasant mouthfeel, improving overall sensory experience. Wide Formulation Compatibility Compatible with all common toothpaste humectants, surfactants, active ingredients and flavor systems, suitable for both conventional and high-solids formulations. Product Advantages & Usage Instructions Core Advantages •Industry-leading oil absorption and thickening efficiency, reducing dosage by 15-20% vs standard grades •Excellent long-term stability, preventing paste thinning or separation during storage and transportation •Fine particle structure for smooth, non-gritty mouthfeel •Compatible with both abrasive silica and other thickening systems for flexible formulation •Stable supply and consistent quality for large-scale continuous production Usage Instructions 1.Recommended addition ratio is 3% – 8% in conventional toothpaste formulas, adjust based on target viscosity and texture requirements. 2.Typically blended with abrasive silica at a ratio of 1:3 to 1:5 to achieve balanced cleaning and thickening performance. 3.Add during dry powder mixing, disperse evenly in humectants before adding water to avoid agglomeration. 4.For high-viscosity formulations, adjust mixing speed and time to ensure complete hydration and dispersion. 5.Store in sealed packages; avoid exposure to high humidity which may pre-hydrate the product and reduce thickening efficiency. Application Scenarios Conventional Daily Toothpaste Standard thickening component for all types of daily care toothpastes, providing stable viscosity and smooth texture for mass-market products. High-Solids Functional Toothpaste Ideal for high-active-ingredient formulations such as anti-caries, anti-sensitivity and herbal toothpastes, supporting stable dispersion of functional components. Transparent & Gel Toothpaste Suitable for clear gel and transparent toothpaste formulations when matched with refractive index, delivering clear appearance and stable rheology. Specialty Oral Care Products Applicable to tooth gels, mouthwash thickening systems, dental polishing pastes and other oral care products requiring rheology control.