Http://
Because the price of rutile titanium dioxide is relatively high and the dosage is large, there are many counterfeit products on the market, including the following aspects:
(1) Packaging domestic titanium dioxide into imported titanium dioxide;
(2) impregnating rutile with anatase titanium dioxide or partially anatase titanium dioxide in rutile; (3) mixing calcium carbonate, lithopone, sulfuric acid in rutile or anatase titanium dioxideå¡«å…… and other fillers. Prevention and identification of counterfeit products:
(1) Imported titanium dioxide usually has its characteristics (such as patterns, fonts, batch numbers, etc.) on its packaging, which can be first identified on its packaging;
(2) For titanium dioxide which is anatase-type impregnated rutile type, it is difficult to distinguish by general chemical methods, and can only be identified by X-ray diffraction method.
(3) For the mixing of CaCO3 in titanium dioxide, it can be identified by adding dilute sulfuric acid or dilute hydrochloric acid to titanium dioxide, which will generate bubbles and make the clarified lime water turbid, indicating that the titanium dioxide is mixed. CaCO3;
(4) For the lithopone powder mixed with lithopone, the smell of rotten eggs will be produced by adding dilute sulfuric acid or dilute hydrochloric acid; (5) for the incorporation of BaSO4, because it cannot react with acid, generally only X can be used. - Diffraction to identify. 