Since the price of titanium dioxide is relatively high and the amount is large, there are more counterfeit titanium dioxide on the market. How do we distinguish the true and false of titanium dioxide? Please see below:
1. Information provided by the supplier
Each batch has a corresponding test list. If it is imported titanium dioxide, it is required to provide import and export certificate. The contents of the test sheet are as follows:
1. Tio2% means whiteness, concentration, hiding power, opacity, coloring strength, etc. The higher the content, the whiteness and the stronger the hiding power! The national standard (the anatase titanium content exceeds 98, the rutile type has a coating mold) The domestic titanium index content is above 90).
2, AL2O3% indicates dispersion, gloss, weather resistance, treated by dense aluminum, the higher the percentage content, the greater the dispersion gloss.
3, SiO2% means weather resistance, treated by dense silicon, the greater the percentage, the greater the weather resistance.
4. Organic matter has organic coating, dispersibility and better wetting.
5, Colorl represents whiteness, brightness, brightness.
6, the average particle size determines light scattering, shielding. The smaller the particle size, the more blue-tone color of titanium dioxide.
7. The oil absorption affects the gloss and dispersion of the system.
8, the resistance value indicates the soluble salt content.
Second, through the packaging identification
Imported titanium dioxide usually has its characteristics on its packaging, such as patterns, fonts, batch numbers, etc. Imported titanium dioxide seals are characteristic, not the same as domestic titanium dioxide seals.
Third, the physical detection method
1, the simplest method is to compare the feel, fake titanium dioxide is slippery, real titanium dioxide is more ambiguous.
2, water rush. Hand stained titanium white gang. Fake easy to wash away, really not easy to wash away.
3, anatase type take a cup of water, throw titanium white powder into, floating up is true, sinking is false, there can be a small amount of precipitation.
Fourth, chemical detection methods
1, mixed with light calcium or heavy calcium! Add dilute sulfuric acid or hydrochloric acid, there are bubbles to make the clear lime water turbid, the national calcium carbonate will react with acid to produce carbon dioxide.
2, mixed with Li De powder, adding dilute sulfuric acid or hydrochloric acid will smell rotten eggs.
3, made of latex paint, or plastic products, plus iron red, or carbon black, dark color indicates poor hiding power, or fake titanium dioxide or poor quality titanium dioxide.
4. For the incorporation of BaSO4, because it can not react with acid, it can only be identified by X-ray diffraction.
(Some powder users said that the titanium dioxide we supply is too expensive. The price from other sources is much cheaper than our authorized sales. As a result, the company has done a foreign trade inspection of trace elements, and the dam content is seriously exceeded)!
5. For the titanium dioxide impregnated with anatase type rutile type, it is difficult to distinguish it by general chemical methods, and can only be identified by X-diffraction method. (The anatase type has poor weather resistance).
At present, Liang metalworking Tools Co., Ltd. has more than 200 employees, who have undergone professional technical training and rich production technology experience. The company has self-supporting import and export rights, and more than 90% of its products are exported to Italy, More than 60 countries and regions, including Spain, the Netherlands, Poland, Russia, Nigeria, India, Iran, South Africa, Japan, Brazil, ELDOR, etc
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