4 Better Ways to Identify Real and Fake Titanium Dioxide

Physical method:
The easiest way is to compare the feel, the fake titanium dioxide is more slippery, and the real titanium dioxide is more astringent.
Rinse with water, dab some titanium dioxide on your hands, the fake ones are easy to wash off, but the real ones are not easy to wash off.
Take a glass of water, throw titanium dioxide into it, what floats up is true, and what settles down is false (if it is an activated modified product, it will not work).

Chemical method:
Mixed with light calcium or heavy calcium: adding dilute sulfuric acid or hydrochloric acid, the presence of air bubbles can make clear lime water cloudy, because calcium carbonate will react with acid to produce carbon dioxide.
Mixed with lithopone: add dilute sulfuric acid or hydrochloric acid, there is a smell of rotten eggs.
Made of latex paint, iron red is added, and the color is dark, indicating that the poor hiding power is fake or poor quality titanium dioxide.

There are two other better ways:
Using the same PP+30%GF+5%PP-G-MAH+0.5% titanium dioxide, the lower the strength, the more real the titanium dioxide (rutile).
Choose a transparent resin, such as transparent ABS+0.5% titanium dioxide, and measure the light transmittance. The lower the light transmittance, the more real the titanium dioxide.