Lithopone B301, Lithopone B311 powder is white powder, non-toxic, odorless, insoluble in water, no reaction with H2S and lye, release H2S gas when reacting with strong acids.
As mentioned above, these oxide NPs are harmful in part because both anatase and rutile forms are semiconductors and produce ROS. Particularly, P25 kind has band-gap energies estimated of 3.2 and 3.0 eV, equivalent to radiation wavelengths of approximately 388 and 414 nm, respectively. Irradiation at these wavelengths or below produces a separation of charge, resulting in a hole in the valence band and a free electron in the conduction band, due to the electron movement from the valence to conduction bands. These hole–electron pairs generate ROS when they interact with H2O or O2 [43,44]. It was described that they can cause an increase in ROS levels after exposure to UV-visible light [45]. The NBT assay in the studied samples showed that bare P25TiO2NPs produce a large amount of ROS, which is drastically reduced by functionalization with vitamin B2 (Fig. 5). This vitamin, also known as riboflavin, was discovered in 1872 as a yellow fluorescent pigment, [46] but its function as an essential vitamin for humans was established more than sixty years later, and its antioxidant capacity was not studied until the end of the XX century [47,48]. This antioxidant role in cells is partially explained because the glutathione reductase enzyme (GR) requires it for good functionality. This enzyme is the one in charge of the conversion of oxidized glutathione to its reduced form which acts as a powerful inner antioxidant and can quench the ROS [49,50]. The cost of this action is that the glutathione is converted to the oxidized form and needs to be recovered by the GR. Consequently, the cells need more vitamin B2. Another glutathione action is the protection against hydroperoxide. This activity is also mediated by riboflavin. Therefore, local delivery of this vitamin seems to significantly help the cells in their fight to keep the oxidative balance, once they are exposed to high levels of ROS.
We are a titanium dioxide manufacturer from China, our company has a perfect production capacity supporting, the main business is CR-930 series, anatase titanium dioxide BA01-01, CA100 series, Litho series, products with strong thickness resistance, good dispersion, high coverage. Widely used in paint, paper, rubber, coatings, tires, ceramics and other industries. Welcome your communication, negotiation and cooperation.
The company's main CR-930 series, Anatase titanium dioxide BA01-01, CA100 series, Lide powder series, has a professional management team, advanced production equipment and excellent technical advantages. The quality of our products is guaranteed and can also meet the manufacturing needs of different customers.
The factory is different from the dealer, we only provide FOB price of Tianjin port for the time being, we do not support CIF price for the time being, please understand. If necessary, the factory will provide you with quotation.
I'm Mia from Hebei Caiqing New Material Technology Co., LTD. My telephone number is +86 15694839000. My email address is sales02@cqtitaniumdioxide.com. We look forward to establishing long-term cooperative relations with your company.