Dicalcium Phosphate dihydrate (DCPD) is commonly used in toothpaste formulations for its abrasive properties and its ability to help remove dental plaque and stains from teeth. Here's how it is utilized in toothpaste:
|
Dicalcium Phosphate Dihydrate (DCPD) |
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|
Appearance |
Symmetrical, odorless,tasteless and pure white crystalline powder |
Content, % |
98.0-103.0 |
|
CaO, % |
32.0–32.9 |
Degree of Whiteness (WG) |
≥95.00 |
| Fineness (pass through 325 mesh sieve), % (pass through 200 mesh sieve), % |
≥99.5 ≥99.95 |
Absorptive water capacity (mlH2O/20g) |
5.0–6.5 |
|
Fluoride (As F), mg/kg |
≤50 |
Chlorides (As CL), mg/kg |
≤300 |
|
Loss on ignition, % |
25.5–26.5 |
PH value (20% aqueous solution) |
7.0–8.1 |
|
Stability |
Pass the test |
Carbonate |
Pass the test |
|
Sulfides |
Not contained |
Iron (As Fe), mg/kg |
≤50 |
|
Insoluble in HCl, % |
≤0.2 |
The rate of stability to Fluoride |
≥0.9 |
|
Loss on drying (60℃), % |
≤0.6 |
P2O5, % |
40.7–42.0 |
|
Sulfate |
≤0.2 |
Heavy metals (As Pb), mg/kg |
≤20 |
|
Arsenic (As), mg/kg |
≤2 |
Titration Value (ml) |
57.0---61.0 |
|
Microorganism, cfu/g |
≤100 |
Yeast and Mold, cfu/g |
≤200 |
|
S.aureus, cfu/g |
<10 |
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1.Abrasive Properties: DCPD is mildly abrasive, which means it can help to physically scrub away plaque, food particles, and surface stains from the teeth without damaging the enamel. It provides a gentle polishing action that contributes to a cleaner and brighter appearance of the teeth.
2.Calcium and Phosphorus Source: DCPD also serves as a source of calcium and phosphorus, which are minerals beneficial for tooth remineralization. Remineralization is the process by which minerals such as calcium and phosphorus are redeposited into the enamel to help repair and strengthen it. By incorporating DCPD into toothpaste, manufacturers can provide these essential minerals to support tooth health.
3.Texture and Consistency: DCPD helps to give toothpaste its desired texture and consistency. It contributes to the overall feel of the toothpaste during brushing, helping to create a smooth and creamy texture that is easy to apply to the teeth and gums.
4.Compatibility with Fluoride: DCPD is compatible with fluoride, another important ingredient commonly found in toothpaste. Fluoride helps to strengthen tooth enamel and protect against tooth decay. When combined with DCPD, fluoride can work more effectively to enhance overall dental health.
