Titanium dioxide (anatase) -0.3um
Titanium dioxide is an inorganic substance with a chemical formula of TiO2. It is a white solid or powdered amphoteric oxide with a molecular weight of 79.9. It has non-toxicity, best opacity, best whiteness and brightness, and is considered the best performance in the world today. Of a white pigment. Titanium white has strong adhesion, is not easy to undergo chemical changes, and is always white. It is widely used in coatings, plastics, papermaking, printing inks, chemical fiber, rubber, cosmetics and other industries. It has a high melting point and is also used to make refractory glass, glaze, enamel, clay, high temperature resistant laboratory utensils, etc.
At the same time, titanium dioxide has a good UV masking effect, and is often incorporated into textile fibers as a sunscreen agent. Ultrafine titanium dioxide powder is also added to sunscreen cream to make sunscreen cosmetics.
Titanium dioxide can be extracted by acid decomposition of rutile or obtained by decomposition of titanium tetrachloride. Titanium dioxide has stable properties and is used in large quantities as a white pigment in paint. It has good hiding power and is similar to lead white, but it does not turn black like lead white; it has the same durability as zinc white. Titanium dioxide is also used as a matting agent for enamel, which can produce a very bright, hard and acid-resistant enamel glaze.
Tungsten trioxide is a kind of inorganic, chemical formula is WO3, yellow powder. Insoluble in water, soluble in alkali, slightly soluble in acid. Used for high melting point alloy and hard alloy, tungsten wire and fireproof materials. It can be obtained by adding acid after eumelting tungsten ore and soda.