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NinaWalpole

In the field of science and technology in the United States, there is an encyclopedia author who is famous for focusing on the field of calcium carbonate. She not only has profound background knowledge and experience accumulation in the field of chemistry, but also has won the love and respect of readers with her profound and simple question-and-answer method.

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Q titanium dioxide crystallization temperature

NinaWalpole Release Time: 3月 21, 2024, 10:44 下午

The crystallization temperature of titanium dioxide is approximately 1843°C (3349.4°F). Depending on the process conditions, the anatase-rutile phase transformation occurs in a wide temperature range of 550°C to 800°C, with large fluctuations. Crystalline transformation is also called polycrystalline transformation.

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Q titanium dioxide effect in mouth

JoanneLena Release Time: 3月 21, 2024, 10:24 下午

Titanium dioxide is often used in products like toothpaste due to its brightening and whitening properties. In small amounts, it is considered safe and has no significant effect on the mouth. However, few studies suggest that overexposure or long-term exposure to titanium dioxide might be harmful. It could potentially lead to tissue inflammation and genetic damage in mammalian cells. However, more research is needed in this area to fully understand its long-term implications in humans. Moreover, the European Food Safety Authority recently suggested a group acceptable daily intake (ADI) of 0.4 mg/kg body weight per day for the sum of the food additives E171 (titanium dioxide), E172 (iron oxides and hydroxides) and E174 (silver). It’s important to note that typically products like toothpaste are spit out after use, so the actual ingestion of titanium dioxide would be minimal. It’s always recommended to discuss any concerns about specific ingredients in dental or other produ...

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Q solubility of titanium dioxide nanoparticles

NinaWalpole Release Time: 3月 21, 2024, 9:33 下午

Titanium dioxide nanoparticles are insoluble in water and organic solvents. However, they can be dispersed in water or other media when coated with certain substances or under certain conditions. In terms of pH, they tend to be more stable and better dispersed in slightly acidic to neutral conditions. They are also more soluble in acidic and alkaline solutions due to the ionization of the surface.

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Q is titanium dioxide e171 safe

NinaWalpole Release Time: 3月 18, 2024, 8:53 下午

Titanium Dioxide E171 is generally considered safe and is widely used as a color additive in many food products. However, some studies suggest that it may have potential health risks when ingested in large quantities, especially in nanoparticle form. There is ongoing debate about its safety, leading some countries like France to suspend its use in food products. Although definitive conclusions are yet to be reached, it is always a good idea to maintain a balanced diet and minimize the intake of processed foods containing artificial additives.

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Q titanium atomic number

NinaWalpole Release Time: 3月 15, 2024, 6:18 下午

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Q google scholar physical characterization of titanium dioxide nanoparticles

NinaWalpole Release Time: 3月 15, 2024, 6:25 下午

Google Scholar is a valuable database for academic resources. Search “physical characterization of titanium dioxide nanoparticles” to access numerous studies on this topic. These studies typically involve analyses of TiO2 nanoparticles’ size, shape, crystal structure, surface area, etc., using techniques such as Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Diffraction (XRD), among others. It’s recommended to utilize the search tools available in Google Scholar, including sorting by relevance, citation count, and publication year, to find the most applicable literature for your specific research question.

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Q chemical properties of titanium

NinaWalpole Release Time: 3月 13, 2024, 6:13 下午

1. Atomic Number: Titanium has an atomic number of 22. 2. Element Symbol: Ti is the element symbol for Titanium. 3. Atomic Weight: The atomic weight of Titanium is 47.867 amu 4. Electron Configuration: The electron configuration for titanium is [Ar] 4s2 3d2. 5. Oxidation States: Titanium has oxidation states of +4, +3, and occasionally +2. The +4 state is the most stable. 6. Electronegativity: It has a Pauling scale electronegativity of 1.54. 7. Metallic Property: Titanium is a transition metal, meaning it can form both positive and negative ions. 8. Reactivity: It is quite reactive. When heated, it reacts with oxygen to form titanium dioxide. It also reacts with halogens and acidic solutions, but not with water. 9. Corrosion Resistance: Titanium is highly resistant to corrosion by sea water, aqua regia, and chlorine. 10. Crystal Structure: Titanium has a hexagonal closely packed crystal structure. 11. Melting Point: It has a very high melting point of 1,668 degrees Celsius. 12. Boilin...

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