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1.What is Titanium Dioxide?

Titanium dioxide, an inorganic compound with the chemical formula TiO2, is a white solid or powdered amphoteric oxide with a molecular weight of 79.866. It has non-toxicity, optimal opacity, optimal whiteness and brightness, and it is considered to be one of the best performing white pigments in the world today. Titanium dioxide has strong adhesion, is not easy to start chemical changes, and is always snow-white. It is widely used in paint, plastic, paper making, printing ink, chemical fiber, rubber, cosmetics and other industries. It has a high melting point and is also used to make refractory glass, glazes, enamel, terra cotta, and high-temperature resistant labware. Titanium dioxide can be extracted from rutile by acid decomposition or obtained by decomposition of titanium tetrachloride. Titanium dioxide in nature exists in three isotopic forms: rutile, anatase and titanium plate, in addition to a number of synthetic crystal forms.

2.How is Titanium Dioxide produced?

1, nano titanium dioxide method: oxygen titanium sulfate solution as raw material, add sodium carbonate aqueous solution, the reaction generates titanium hydroxide precipitate, and then add hydrochloric acid, generating positively charged hydrated titanium dioxide hydrosol, add cationic surfactant, make it a gel, and then use organic solvents for extrusion treatment, the organic sol removed organic solvents, and then below the decomposition of the cationic surfactants used After removing the organic solvent, and then heat treatment at a temperature lower than the decomposition of the cationic surfactant used, ultra-fine titanium dioxide products can be obtained. 2, sulfuric acid method will ilmenite crushed into a certain fineness of the mineral powder, and then with concentrated sulfuric acid acid acid should be. Generate a block of solid-phase material, water leaching, get titanium liquid (containing titanium sulfate, ferrous sulfate and a large number of impurities). The impurities are removed by sedimentation. Ferrous sulfate is removed by freezing separation. Add crystal species to make titanium sulfate hydrolyzed to generate titanium dioxide (hydrated titanium dioxide), after rinsing, calcined at 800 ~ 1000 ℃, to obtain titanium dioxide

3.How is Titanium Dioxide stored and distributed?

Store under dry inert gas, keep container tightly closed, store in a cool, dry place Packed in galvanized iron drums. Store in a cool, ventilated place. The storage should be dedicated and not mixed with other items. Pay attention to fire prevention. Polymerization inhibitor should be added before storage and transportation. Before transportation, check whether the packing container is complete and sealed, and make sure the container is not leaking, collapsing, falling or damaged during transportation. Strictly prohibit mixing and transporting with oxidizing agents, acids, alkalis, edible chemicals and so on. The transport vehicle and ship must be thoroughly cleaned and sterilized, otherwise it is not allowed to ship other items. When transported by ship, the fitting position should be far away from bedrooms, kitchens, and isolated from the cabin, power supply, fire source and other parts. Road transportation should follow the prescribed route.

4.What is Titanium Dioxide used for?

(1) The amount of titanium dioxide shall not exceed 1% of the weight of the food. (2) In accordance with the special standards published in Article 401 of the Decree, it shall not be used for coloring foods unless there is a similar standard permitting the addition of coloring. (3) For coloring foods, the edible color additive titanium dioxide may contain appropriate diluents as safe color additives, as follows: silicon dioxide, as a dispersion aid, in an amount not exceeding 2%. Products adapted to: cold fruits, jellies, fried foods, cocoa products, chocolate, chocolate products, hard candies, polished candies, gel-based candies, puffed foods, candy chocolate products coating, mayonnaise, salad dressings, jams, solid beverages, konjac gel foods, and so on.