Thickening silicon dioxide 1. Product Overview (Product Overview) 1.1 Basic definitions Zhongqi Thickening Silica, a food-grade functional additive produced through precipitation technology, is a white ultra-fine powder. Its core feature lies in its three-dimensional porous structure that prevents reactions with surfactants and fluoride compounds in toothpaste formulations. This non-reactive thickening agent serves as the key component ensuring product stability and optimal user experience. 1.2 Core values As the "skeletal framework" of toothpaste formulations, Zhongqi Thickening Silica effectively addresses industry pain points such as poor stability, layered paste, and rough texture caused by traditional thickeners. Through precise regulation of specific surface area and product characteristics, it achieves synergistic optimization of paste viscosity, thixotropy, and suspension properties while enhancing texture fineness and glossiness. This provides stable and reliable formula support for premium products like transparent toothpaste and gel toothpaste. 2. Product Characteristics (Product Characteristics) 2.1 Structural and performance advantages •High thickening and stability: the specific surface area is 180-220m²/g, the surface silanol forms a dense hydrogen bond network, the DBP absorption value reaches 2.5-2.9cm³/g, which can make the viscosity of toothpaste stable at 80000-150000mPa·s. •Excellent thixotropic performance: thixotropic index is greater than or equal to 1.26, realizing the characteristics of "forming paste after standing, forming by extrusion and dispersing easily when brushing". After extrusion, the paste can be kept on the toothbrush for 3 minutes without collapse, and quickly dispersed within 10 seconds when brushing. •Strong transparent adaptation: the refractive index is accurately controlled at 1.45-1.46, which is highly compatible with the refractive index of glycerol, sorbitol and other moisturizers. Transparent toothpaste with light transmittance of more than 90% can be prepared, and there is no turbidity phenomenon in long-term storage. •Excellent compatibility performance: pH value 6.0-8.0, excellent compatibility with fluoride, antiserum and other active ingredients, does not affect the release efficiency of fluoride ion, strong adsorption force on fragrance can prolong the retention time of fragrance. 3. Key technical parameters (KTP) Parameter items Transparent toothpaste for special use Gel toothpaste for special use For ordinary paste testing standard SiO₂ content (dry basis) ≥98.5% ≥98.0% ≥97.5% GB/T 31740-2015 average grain diameter （μm） 10-15 12-17 15-20 Laser particle size analysis BET specific surface area (m²/g) 200-220 180-200 160-180 BET multi-point adsorption method DBP absorption value (cm³/g) 2.7-2.9 2.6-2.8 2.5-2.7 HG/T 3066-2008 pH value (10% water dispersion) 6.5-7.5 6.0-8.0 6.0-8.0 HG/T 3067-2008 Dry reduction (105℃,2h) ≤5.0% ≤6.0% ≤7.0% HG/T 3065-2008 refractive index 1.45-1.46 1.44-1.47 1.43-1.48 Abbe refractometer method Heavy metal content (ppm) ≤10 ≤10 ≤10 Atomic absorption spectrophotometry 4. Application fields (Application Fields) 4.1 Transparent toothpaste systems •It is suitable for high-end transparent toothpaste formula, and the clear appearance can be achieved by accurate matching of refractive index. Adding 3-5% can ensure the stability of paste, and combining with whitening ingredients can improve the premium space of products. 4.2 Anti-sensitivity/efficacy toothpaste •As a suspension stabilizer of potassium nitrate, strontium chloride and other antihistamine components, the addition of 5-8% can prevent the precipitation of active ingredients, make the uniformity of paste content RSD <2%, and prolong the retention time of effective components in the mouth. 4.3 Gel toothpaste products •For pressed gel toothpaste, the addition of 8-10% can give the paste excellent thixotropy, and the extruded strip has good forming properties. It can be dispersed quickly and without residue when brushing, improving the convenience of use. 4.4 Chinese herbal toothpaste •The effective components of the adsorbed Chinese herbal extracts were extracted to reduce the oxidation and degradation of active substances, so that the retention rate of effective components was more than 90% after 12 months of storage, and the bitter taste of the herbs was masked. 5. Standards and regulations (Standards & Regulations) •Comply with national and industry standards: GB/25576-2020 index requirements. •Obtain relevant qualification certification: food additive production license, CMA/CNAS testing certification. •Follow the safety specifications: heavy metal and microbial indicators are fully up to standard, total bacterial count is less than or equal to 1000CFU/g, total heavy metal is less than or equal to 10ppm. 6. Key points for handling and storage •Mixing process: low speed shear and slow dispersion are used to form a colloid with the moisturizer first, and then the surfactant system is added to avoid the influence of bubbles caused by high-speed stirring on transparency. •Compatibility note: the pH value of the control system is 6.5-7.5, and avoid contact with strong acid and alkali to destroy the hydrogen bond network and affect the thickening effect. •Storage conditions: sealed packaging, stored in a dry and cool place (15-30℃, relative humidity <50%), avoid moisture and lumping, valid for 2 years, open and use up as soon as possible. 7. Product Advantages (PA) •Excellent stability performance: the rate of viscosity change within 90 days is less than 5%, far better than the industry average level of 15%, ensuring long-term stability of products. •Strong transparent adaptation: the refractive index can be adjusted accurately, suitable for different moisturizer systems, and supports the development of products with high light transmittance. •Excellent taste and experience: ultra-fine particles give the paste a delicate touch, no sand feeling when brushing, and improve user satisfaction. •Customized service: the specific surface area and DBP absorption value can be adjusted according to the requirements of toothpaste formula, and formula compatibility test and optimization guidance can be provided. 8. Factory advantages Zhongqi Guangdong Silicon Materials Co., Ltd., a national high-tech enterprise and provincial-level specialized, refined, unique, and innovative enterprise, has been dedicated to the industry for over two decades. The company holds 17 patented technologies and operates a GMP-certified production base. Equipped with advanced testing instruments including atomic fluorescence spectrometers and laser particle analyzers, it has established a comprehensive quality control system comprising 26 inspection processes from raw materials to finished products. The company has obtained ISO22000 certification for food safety management systems. 9. Frequently asked questions •1. What is the main function of thickening silica? High efficiency thickening, improve product stability, improve thixotropy, reduce stratification and sedimentation. •2. What factors affect the thickening effect? •It depends on the amount added, dispersion degree, system pH value and temperature, so it needs to be adjusted according to the formula. •3. What are the requirements for adding? •Add slowly under low speed stirring, or pre-mix with a small amount of powder first to avoid high speed feeding and lumping, which will affect the effect. •4. Is it safe to use? Does it meet the standards? •Compliant and safe, in line with the corresponding national standards/industry norms, and risk-free according to the recommended amount. •5. What is the core difference with ordinary silica? •The functional emphasis is different: thickening type has large specific surface area and developed pores, focusing on thickening and stabilization; ordinary type is mostly used as anti-caking/filler, without significant thickening effect. •6. How to store to maintain performance? •Store in a cool and dry place, moisture-proof, avoid high temperature and sunshine. The unopened shelf life is 2 years. 10. Certifications and Honours •FSSC22000 •ISO22000：2018 •ISO9001：2015 •SHC HALAL •OU KOSHER •FDA attestation •FAMI-QS •SEDEX •Food additive production license •Feed additive production license •National high-tech enterprise •Specialized, refined and new enterprises in Guangzhou •43 patents from the State Intellectual Property Office