Design formula of standard whitening toothpaste

Abstract

The invention relates to a design formula of standard whitening toothpaste. The standard whitening toothpaste is prepared from the following raw materials in percentage by weight: 10-50% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerol, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of peppermint essence and 31.5-71.5% of deionized water. The invention solves the problem that the content of silicon dioxide (friction type) in the existing application is too high and does not accord with the actual industry formula, provides a silicon dioxide (friction type) content formula closer to the actual production requirement, and through experimental verification, when the content of silicon dioxide (friction type) in the formula is greater than or equal to 15%, the PCR (Polymerase Chain Reaction) of the whitening toothpaste is obviously higher than the standard requirement of GB / T 43576-2023, so that the whitening toothpaste has a good application prospect. The invention provides a whitening toothpaste formula which is efficient, stable and reasonable in cost, has both cleaning power and practicability, and is suitable for industrial production and market promotion, and the capability of effectively removing exogenous color spots is ensured, so that the national standard requirement is met, and the abrasive content in the toothpaste is also optimized, and the whitening toothpaste formula has the advantages of high efficiency, stability and reasonable cost.

Description

Technical Field

[0001] The invention belongs to the technical field of toothpaste, and in particular relates to a design formula of a standard whitening toothpaste. Background Art

[0002] With the improvement of living standards and changes in dietary structure, the daily intake of dark beverages such as coffee and milk tea has increased significantly, resulting in increasingly prominent problems of exogenous tooth stains, prompting a rapid growth in market demand for efficient and safe whitening toothpaste.

[0003] Tooth staining is mainly caused by the salivary film adsorbing dietary pigments and gradually depositing them. Specifically, saliva in the mouth forms a constant, highly adhesive film on the surface of the teeth. Some bacteria decompose food on the teeth, or dark-colored foods and beverages (black tea, soy sauce, chocolate, coffee, etc.) in the daily diet can stain the film, which gradually accumulates to form exogenous stains that are difficult to remove.

[0004] To standardize the evaluation criteria, GB / T 43576-2023 uses bovine teeth as the substrate. Regular grinding blocks are made by cutting, resin-mounting, and polishing. The blocks are artificially dyed to obtain exogenous stains. The difference in tooth whiteness after simulated toothbrushing is measured using a colorimeter, and the relative cleaning rate of toothpaste against exogenous stains is calculated. The control abrasive slurry in GB / T 43576-2023 is as follows: every 10g of abrasive silica is dispersed with 50mL of diluent, and the abrasive content is 16.7%. Toothpaste slurry preparation: 600g of sample toothpaste is weighed into a 2000mL beaker, 960g of water is added, and the mixture is stirred and dispersed with a glass rod. To obtain a slurry with the same abrasive concentration, the abrasive content in the toothpaste must be 43.4%.

[0005] However, in the actual production process, the abrasive content of 43.4% is a relatively high concentration, far exceeding the actual formula in the industry (usually 15%-25%), and is far from the actual formula usage in the toothpaste industry; therefore, the present invention designs a design formula for a whitening toothpaste that meets the requirements of GB / T43576-2023 standard while adding a minimum content of silica (abrasive type). Summary of the Invention

[0006] The object of the present invention is to provide a design formula of a standard whitening toothpaste to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides a standard whitening toothpaste formula, which is prepared from the following raw materials in percentage by weight: 10%-50% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 31.5%-71.5% deionized water.

[0008] Preferably, it is prepared from the following raw materials in percentage by weight: 10% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 71.5% deionized water.

[0009] Preferably, it is prepared from the following raw materials in percentage by weight: 15% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 66.5% deionized water.

[0010] Preferably, it is prepared from the following raw materials in percentage by weight: 20% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 61.5% deionized water.

[0011] Preferably, it is prepared from the following raw materials in percentage by weight: 30% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 51.5% deionized water.

[0012] Preferably, it is prepared from the following raw materials in percentage by weight: 40% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 41.5% deionized water.

[0013] Preferably, it is prepared from the following raw materials in percentage by weight: 50% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 31.5% deionized water.

[0014] Another aspect of the present invention is a method for preparing a whitening toothpaste based on a standard whitening toothpaste formulation, comprising the following steps:

[0015] S01: Slowly add 0.5% sodium carboxymethyl cellulose into a portion of deionized water, stirring until completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0016] S02: Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution, and stir at low speed until uniform;

[0017] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0018] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0019] S05 then adds 10%-50% of silicon dioxide (friction type) in portions and stirs until it becomes a uniform slurry;

[0020] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0021] Preferably, in step S05, 10%-50% of silicon dioxide (friction type) is added in portions, stirred into a uniform slurry, and vigorously stirred using a high-speed homogenizer.

[0022] Compared with the existing technology, the present invention solves the problem that the silica (friction type) content in existing applications is too high (43.4%) and is inconsistent with the actual industry formula (usually 15%-25%), and provides a low silica (friction type) content (minimum 15%) formula that is closer to actual production needs. Experimental verification shows that when the silica (friction type) content in the formula is ≥15%, the PCR (relative cleaning rate) of the whitening toothpaste is significantly higher than the standard requirements of GB / T 43576-2023, ensuring its ability to effectively remove exogenous stains. It not only meets the national standard requirements, but also optimizes the silica (friction type) content in the toothpaste, providing an efficient, stable and cost-effective whitening toothpaste formula that combines cleaning power and practicality, and is suitable for industrial production and market promotion. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] A standard whitening toothpaste is designed with the following raw materials in percentage by weight: 10%-50% silicon dioxide (abrasive type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 31.5%-71.5% deionized water.

[0026] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0027] S01: Slowly add 0.5% sodium carboxymethyl cellulose into a portion of deionized water, stirring until completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0028] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0029] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0030] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0031] S05 then adds 10%-50% of silicon dioxide (friction type) in batches and stirs until it becomes a uniform slurry;

[0032] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0033] Specifically, prepare all the raw materials: 10%-50% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint flavor, 31.5%-71.5% deionized water, and then start premixing the thickener; take 0.5% sodium carboxymethyl cellulose and slowly add it into part of the deionized water, where the content of deionized water is about 1 / 3 of the total water volume. Since sodium carboxymethyl cellulose easily forms an outer layer of gel after absorbing water to wrap the inner layer of powder, it is necessary to add Add while stirring until completely dispersed to avoid agglomeration, ensure that the sodium carboxymethyl cellulose is evenly dispersed, and let it stand for 1-2 hours to form a stable colloid to obtain a premixed solution; take a beaker or other preparation tool, mix the remaining deionized water and 10% glycerol, and then add the premixed solution obtained in step S02, and stir at a low speed. The stirring speed is maintained at 300-500rpm. Slow stirring can avoid shear force destroying the network structure formed by sodium carboxymethyl cellulose and prevent viscosity from decreasing; add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate in the beaker in sequence. Sodium benzoate is translated as a preservative and dissolved first. Sodium benzoate can inhibit microorganisms as early as possible, and sodium lauryl sulfate can be added later to prevent its foaming from affecting dissolution. Stir until it is completely dissolved to obtain a liquid base; add 5% of silicon dioxide (thickening type) to the liquid base prepared in step S03. Considering that silicon dioxide (thickening type) needs to be evenly dispersed to build a three-dimensional network, adding it too quickly will easily lead to local agglomeration and affect the thixotropy of the paste. Therefore, it is necessary to add silicon dioxide (thickening type) slowly and stir until there are no particles; then add 10%-50% of silicon dioxide (friction type). Considering that a high proportion of friction agent is easy to precipitate, it is more effective to add it in batches. Ensure that each batch of particles is fully coated with the liquid phase. At the same time, to ensure stirring efficiency, a high-speed homogenizer is required to stir them vigorously. The speed can be adjusted to 1200rpm. The concentrated addition of high-hardness silica (friction type) may cause damage to the stirring paddle. Adding it in batches can also reduce the mechanical load and extend the service life of the equipment. Finally, 1% mint essence is added and vacuum degassing is carried out to eliminate bubbles to obtain a fine toothpaste. The vacuum degree is -0.08 to -0.1MPa and the time is 10-15 minutes. The late addition of essence can avoid the loss of volatile components during long-term stirring.

[0034] Example 2

[0035] A standard whitening toothpaste is designed and formulated from the following raw materials in percentage by weight: 10% silica (abrasive type), 5% silica (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 71.5% deionized water.

[0036] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0037] S01 Take 0.5% sodium carboxymethyl cellulose and slowly add it to a portion of deionized water (23.8%), stirring while adding until it is completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0038] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0039] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0040] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0041] S05 then adds 10% silica (friction type) in portions and stirs until it becomes a uniform slurry;

[0042] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0043] Example 3

[0044] A standard whitening toothpaste is designed and formulated from the following raw materials in percentage by weight: 15% silica (abrasive type), 5% silica (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 66.5% deionized water.

[0045] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0046] S01 Take 0.5% sodium carboxymethyl cellulose and slowly add it to a portion of deionized water (22.1%), stirring while adding until it is completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0047] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0048] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0049] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0050] S05 then adds 15% silicon dioxide (friction type) in portions and stirs until it becomes a uniform slurry;

[0051] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0052] Example 4

[0053] A standard whitening toothpaste is designed and formulated from the following raw materials in percentage by weight: 20% silica (abrasive type), 5% silica (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 61.5% deionized water.

[0054] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0055] S01 Take 0.5% sodium carboxymethyl cellulose and slowly add it to a portion of deionized water (20.5%), stirring while adding until it is completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0056] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0057] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0058] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0059] S05 then adds 20% silica (friction type) in portions and stirs until it becomes a uniform slurry;

[0060] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0061] Example 5

[0062] A standard whitening toothpaste is designed and formulated from the following raw materials in percentage by weight: 30% silica (abrasive type), 5% silica (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 51.5% deionized water.

[0063] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0064] S01 Take 0.5% sodium carboxymethyl cellulose and slowly add it to a portion of deionized water (17.1%), stirring while adding until it is completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0065] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0066] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0067] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0068] S05 then adds 30% silica (friction type) in portions and stirs until it becomes a uniform slurry;

[0069] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0070] Example 6

[0071] A standard whitening toothpaste is designed and formulated from the following raw materials in percentage by weight: 40% silica (abrasive type), 5% silica (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 41.5% deionized water.

[0072] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0073] S01 Take 0.5% sodium carboxymethyl cellulose and slowly add it to a portion of deionized water (13.8%), stirring while adding until it is completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0074] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0075] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0076] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0077] S05 then adds 40% silica (friction type) in portions and stirs until it becomes a uniform slurry;

[0078] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0079] Example 7

[0080] A standard whitening toothpaste is designed and formulated from the following raw materials in percentage by weight: 50% silica (abrasive type), 5% silica (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 31.5% deionized water.

[0081] The preparation method based on the above standard whitening toothpaste formula includes the following steps:

[0082] S01 Take 0.5% sodium carboxymethyl cellulose and slowly add it to a portion of deionized water (10.5%), stirring while adding until it is completely dispersed, and let it stand to swell for later use to obtain a premixed solution;

[0083] S02 Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution and stir at low speed until uniform;

[0084] S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base;

[0085] S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles;

[0086] S05 then adds 50% of silica (friction type) in portions and stirs until it becomes a uniform slurry;

[0087] S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

[0088] Example 8

[0089] The only difference between the above embodiments is the addition amount of silicon dioxide (friction type) and the change of the corresponding solution (deionized water).

[0090] Before presenting the test results, it should be noted that the present invention aims to design a suitable standard whitening reference toothpaste based on GB / T 43576-2023. By experimentally analyzing whitening toothpastes with different concentrations of silica (abrasive type), measuring PCR in different formulas, and analyzing and collating the obtained test data, the minimum amount of abrasive silica added that meets the requirements of GB / T 43576-2023 standard is obtained.

[0091] Among them, GB / T 43576-2023 uses bovine teeth as the substrate, which are cut, resin-inlaid, and polished to make regular grinding blocks, which are artificially dyed to obtain exogenous stains. After simulating toothbrushing, the colorimeter is used to measure the difference in tooth whiteness changes, and the relative cleaning rate of toothpaste on exogenous stains is calculated.

[0092] Preparation of the control abrasive slurry in GB / T 43576-2023: Disperse every 10g of abrasive silica with 50mL of diluent, resulting in an abrasive content of 16.7%. Preparation of the toothpaste slurry: Weigh 600g of the sample toothpaste into a 2000mL beaker, add 960g of water, and stir with a glass rod.

[0093] Investigation of the cleaning properties of the whitening toothpaste of the present invention

[0094] (1) Test materials: toothpastes of Examples 2-7

[0095] (2) Test methods:

[0096] Step 1: Prepare bovine teeth with a standard dental pellicle according to GB / T 43576-2023;

[0097] Step 2: Use a colorimeter to record the reflectance of the initial L value;

[0098] Step 3: Brush with a toothbrush at a standard intensity and for a standard time. A control abrasive slurry and toothpaste slurry were prepared according to GB / T43576-2023.

[0099] Step 4: Measure the L value after brushing and calculate PCR through reflectivity.

[0100] (3) Test results:

[0101] The test results are shown in the following table

[0102]

[0103] Table data analysis instructions:

[0104] PCR is a test that measures the ability of toothpaste to remove dental pellicles (artificial or natural stains) through an in vitro simulation experiment. The results range from 0% (no cleaning effect) to 100% (complete cleaning). The higher the PCR value, the stronger the cleaning power of the toothpaste.

[0105] The L value represents the lightness of the color, ranging from 0 (pure black) to 100 (pure white);

[0106] Measure the L value of the teeth or artificial tooth model before / after using toothpaste to obtain ΔL (difference), which is used to reflect the whitening effect. A positive ΔL value indicates that the teeth are brighter (whiter).

[0107] in conclusion:

[0108] As can be seen from Table 1, when the content of abrasive silica in the formula is greater than or equal to 15%, the whitening toothpaste can be guaranteed to have the effect of meeting the requirements of GB / T 43576-2023 standard.

[0109] The reference formula of whitening toothpaste was obtained: 15% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint flavor, and 66.5% deionized water.

[0110] PCR is the core indicator for evaluating the stain removal ability of whitening toothpaste. It refers to the ratio of the whiteness increase of the sample group's teeth after brushing to the whiteness increase of the control group. If PCR is significantly greater than 100, it achieves a whitening effect that meets the standards.

[0111] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0112] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A design formula of a standard whitening toothpaste, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 10%-50% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerin, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of mint essence, and 31.5%-71.5% of deionized water.

2. The design formula of a standard whitening toothpaste according to claim 1, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 10% silicon dioxide (friction type), 5% silicon dioxide (thickening type), 10% glycerin, 0.5% sodium carboxymethyl cellulose, 1.5% sodium lauryl sulfate, 0.5% sodium benzoate, 1% mint essence, and 71.5% deionized water.

3. The design formula of a standard whitening toothpaste according to claim 1, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 15% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerin, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of mint essence, and 66.5% of deionized water.

4. The design formula of a standard whitening toothpaste according to claim 1, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 20% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerin, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of mint essence, and 61.5% of deionized water.

5. The design formula of a standard whitening toothpaste according to claim 1, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 30% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerin, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of mint essence, and 51.5% of deionized water.

6. The design formula of a standard whitening toothpaste according to claim 1, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 40% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerin, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of mint essence, and 41.5% of deionized water.

7. The design formula of a standard whitening toothpaste according to claim 1, characterized in that: The invention is prepared from the following raw materials in percentage by weight: 50% of silicon dioxide (friction type), 5% of silicon dioxide (thickening type), 10% of glycerin, 0.5% of sodium carboxymethyl cellulose, 1.5% of sodium lauryl sulfate, 0.5% of sodium benzoate, 1% of mint essence, and 31.5% of deionized water.

8. The method for preparing a standard whitening toothpaste according to claims 1-7, characterized in that: The following steps are involved: S01: Slowly add 0.5% sodium carboxymethyl cellulose into a portion of deionized water, stirring until completely dispersed, and let it stand to swell for later use to obtain a premixed solution; S02: Add the remaining deionized water and 10% glycerol to the beaker, stir, then add the premixed solution, and stir at low speed until uniform; S03: Add 0.5% sodium benzoate and 1.5% sodium lauryl sulfate to a beaker in sequence and stir until completely dissolved to obtain a liquid base; S04 Slowly add 5% silicon dioxide (thickening type) into the liquid base and stir until there are no particles; S05 then adds 10%-50% of silicon dioxide (friction type) in portions and stirs until it becomes a uniform slurry; S06 Add 1% mint essence, stir evenly, and then vacuum degas to remove bubbles to obtain toothpaste.

9. The method for preparing a standard whitening toothpaste according to claim 8, characterized in that: In step S05, 10% to 50% of silicon dioxide (friction type) is added in portions, stirred into a uniform slurry, and vigorously stirred using a high-speed homogenizer.

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