Authenticity of titanium dioxide self-detection method

In today's society, there are many people in the titanium dioxide market. As the use of titanium dioxide is widely seen, and large and medium-sized enterprises are ordering in tons, some unscrupulous sellers will take the risk, shoddy, and samples to customers are genuine, but when they give real goods, they take fakes. The cargo acts as a genuine product to send to the customer. When the customer finds a fake, they say that the goods are the same as the sample on various grounds. It is impossible to return the product. Due to the high price of rutile titanium dioxide and the large amount of counterfeit products on the market, the following are mainly included:

(1) Pack domestically produced titanium dioxide into imported titanium dioxide.

(2) Implantation of anatase titanium dioxide in rutile or incorporation of some anatase titanium dioxide in rutile.

(3) A filler such as calcium carbonate, lithopone, and barium sulfate is mixed in rutile titanium dioxide or anatase titanium dioxide.

In this regard, China's Shuangli Group Marketing Manager Yao said that the authenticity of titanium dioxide can be judged from the following ways:

First, the information provided by the supplier.

Each batch of titanium dioxide has a corresponding SGS test report, which is when the supplier pulls the goods back from the manufacturer, the manufacturer will give the supplier. Second, if it is imported titanium dioxide, then customers can ask suppliers to provide import and export certification issued by the customs department. Finally, the customer can also request suppliers to provide product introduction information. The introduction materials should include the following contents:

1, TiO2% indicates whiteness, hiding power (opacity, color strength), the higher the percentage content, the greater the whiteness and hiding power.

2. Al2O3% means dispersion, luster and weather resistance (treated with dense aluminum). The higher the percentage content, the greater the dispersion and gloss.

3, SiO2% means weather resistance (after dense silicon treatment), the higher the percentage content, the greater the weather resistance.

4, organic matter has organic coating, better dispersion (wet).

5, ColorL represents whiteness, brightness (brightness).

6, the average particle size determines the light scattering, shielding. The smaller the particle size, the more the tone of titanium dioxide is blue.

7. Oil absorption affects the luster and dispersion of the system.

8. The resistance value indicates soluble salt content.

Second, through the packaging identification.

Imported titanium dioxide usually has its own characteristics (such as patterns, fonts, batch numbers, etc.) on its packaging, which can be identified on its packaging first. Secondly, the sealing of imported titanium dioxide is characteristic, and the sealing with domestic titanium dioxide is not same.

Third, the physical detection method.

1, the simplest method is to compare the feel, fake titanium dioxide is more slippery, true titanium dioxide is more astringent.

2, water. The hand is stained with titanium dioxide. It is easy to wash off falsely. It is not easy to wash away.

3, take a glass of water, lost titanium dioxide into, floating up is true, precipitation is false.

Fourth, chemical detection methods.

1. Doped with light calcium or heavy calcium: Add lean or **, bubbles can make the clarified lime water turbid, because calcium carbonate reacts with acid to produce carbon dioxide.

2, mixed with Lide powder: add thin ** or **, smelly smell of eggs.

3, made of latex paint, plus iron red, dark color, indicating poor hiding power is false or poor quality of titanium dioxide.

4, for the mixed BaSO4, because it can not react with the acid, generally only use X-ray diffraction to identify.

5. It is difficult to distinguish between anatase and rutile titanium dioxide by ordinary chemical methods. Only X-ray diffraction can be used for identification.