SORBOSIL Toothpaste Silica Grades: Full Selection Guide
Created on 10.21
Complete Guide to Toothpaste-Grade Silica: SORBOSIL Series Abrasive & Thickening Grades and Application Guidelines
In the global oral care formulation system, precipitated hydrated silica is currently the most widely used high-end abrasive and rheology modifier for toothpaste. According to the 2026 industry report by PW Consulting, the global toothpaste-grade silica market reached USD 645.5 million in 2025 and is expected to exceed USD 920 million by 2032, with a CAGR of 5.3%. Among all product types, abrasive silica accounts for 60.1% of the total market share, serving as the core functional raw material in toothpaste formulations.
As a classic product portfolio in the global oral care sector, the SORBOSIL toothpaste-grade silica series covers full-scenario demands from mass-market products to high-end organic formulations. With stable batch quality, precise RDA control and excellent formulation compatibility, it has become a regular choice for formulation engineers across many brands. Below is a detailed breakdown of the application scenarios and selection points for each grade, combined with product positioning and industry application logic.
Core Evaluation Dimensions for Toothpaste Silica
Before formal selection, it is necessary to clarify two core categories and key indicators, which form the basis for judging whether a raw material fits a target formulation:
- Functional classification
- Key indicators
In-Depth Analysis of SORBOSIL Series Grades
1. SORBOSIL AC77: Mainstream Abrasive Silica for Semi-Transparent/Opaque Pastes
Application positioning: Regular whitening and stain-removal toothpastes; core abrasive for semi-transparent and opaque paste formulas
This is the most versatile general-purpose abrasive silica in the full series, and the primary choice for mass-market daily toothpaste lines. Its RDA value falls in the medium range (approx. 90–110) with uniform particle size distribution. Under regular brushing frequency, it effectively removes extrinsic stains, soft plaque and dental buildup caused by daily diet, without causing excessive wear to tooth enamel, which meets the safety threshold of daily oral care.
In terms of formulation compatibility, AC77 works well with mainstream active ingredients such as sodium fluoride and sodium monofluorophosphate, and will not deactivate fluoride ions. It also adapts to conventional humectant systems such as sorbitol and glycerin, making it suitable for mass-market whitening toothpastes and family-size all-around care toothpastes. It is a cost-effective option for brand volume-driven SKUs.
2. SORBOSIL AC33: High-Abrasion Silica for Heavy Stain Removal
Application positioning: Tobacco stain removal and intensive whitening toothpastes; enhanced stain removal performance
Targeting stubborn extrinsic stains caused by long-term smoking, regular strong tea and coffee consumption, AC33 is a purpose-built enhanced abrasive grade. It has a higher RDA value (approx. 120–140) with optimized particle morphology. By increasing the effective friction surface of particles, it delivers stronger stain lifting performance at the same abrasion level.
This grade is usually applied in functional categories such as men’s tobacco stain removal toothpastes and clinical-grade whitening toothpastes, and is often formulated with anti-calculus ingredients such as sodium pyrophosphate for synergistic effects. Note that this grade is not recommended for long-term daily use by people with sensitive teeth. In formulation design, it is usually labeled for "periodic use" or "2–3 times a week" to balance efficacy and safety.
3. SORBOSIL BFG-51: Mild Polishing Silica for Premium Whitening Lines
Application positioning: Premium whitening toothpastes; mild polishing to remove extrinsic stains
As consumer demand for "mild whitening" continues to rise, low-abrasion, high-polishing silica has become the mainstream choice for premium oral care lines. The core advantage of BFG-51 is "high cleaning performance with low abrasion". By regulating particle pore structure and surface morphology, it achieves superior polishing effect at a medium RDA level — instead of grinding off stains through strong friction, it polishes the tooth surface with fine particles, smooths micro-scratches on enamel and restores the natural luster of teeth.
This grade fits mid-to-premium whitening toothpastes and anti-sensitivity whitening formulas, targeting consumers with sensitive teeth who have whitening demands. It is also a common raw material for current clinical care and dentist-recommended toothpaste lines.
4. SORBOSIL BFG-52: Specialized Silica for Premium Natural / Organic Certified Toothpastes
Application positioning: Premium natural whitening and organic certified toothpastes; pursuit of high cleaning power with low abrasion
As the top compliance grade in the full series, BFG-52 not only inherits the merits of low abrasion and high cleaning power, but also meets the strict requirements of organic toothpastes in terms of raw material purity, production process and compliance certifications. It is compatible with formulation systems under organic certification standards such as EU COSMOS and USDA Organic.
Its heavy metal and impurity residue control is far stricter than ordinary food-grade standards. The finer particles deliver smoother paste mouthfeel while retaining sufficient cleaning power. Premium toothpaste brands focusing on "natural ingredients", "pregnancy-safe" and "sensitive-friendly" positioning usually select this grade as the core abrasive to balance efficacy, safety and compliance credentials.
5. SORBOSIL TC15: Rheology-Modifying Thickening Silica
Application positioning: Blended use; adjusts toothpaste rheology and hardness, stabilizes paste; commonly used in transparent toothpastes
Unlike the four abrasive grades above, TC15 is a typical thickening silica that does not undertake the main cleaning function. Its core role is to build the three-dimensional network structure of toothpaste, adjust the thixotropy, hardness and stringiness of the paste, prevent paste delamination and water separation, and ensure good stand-up property and forming performance after extrusion.
It has a higher specific surface area and stronger oil absorption value, and its dosage is usually much lower than abrasive silica. It is often blended with AC series and BFG series abrasive silica. Especially in transparent toothpaste formulations, TC15 has a refractive index highly matched with the humectant system and will not compromise paste transparency, making it an essential thickening raw material for transparent gel toothpastes.
General Logic for Formulation Selection
In actual formulation development, a single grade is rarely used alone. Blending combinations are usually designed according to product positioning:
- Mass-market daily whitening toothpaste
- Functional heavy stain removal toothpaste
- Premium transparent whitening toothpaste
- Organic natural toothpaste
Industry Development Trends
From a global market perspective, the technological iteration of toothpaste-grade silica is advancing in two major directions: First, high cleaning power with low abrasion. Through particle engineering technology to optimize morphology, stain removal capacity is enhanced without increasing RDA, to accommodate the whitening needs of people with sensitive teeth. Second, high purity and compliance. As markets in the Middle East and Southeast Asia raise requirements for HALAL certification, and European and American markets raise requirements for organic and vegan certifications, compliance qualifications on the raw material side have become the basic threshold for market entry.
Overall, the SORBOSIL series features a complete grade layout covering full scenarios from basic to premium grades, and from abrasive to thickening functions. It is a highly mature selection system for oral care formulation development. For brands, matching the corresponding grades according to their own product positioning, target audience and compliance requirements can quickly build a stable and reliable formulation framework.
Disclaimer
The content of this article is collected and compiled from public online resources, and is intended for reference and review by industry professionals only. We assume no legal liability for the accuracy, completeness or applicability of the content. If any content involves copyright infringement or other issues, please contact us promptly and we will remove the relevant content immediately.
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