Basic Overview 
The chemical name of titanium dioxide is titanium dioxide (TiO ₂), and the rutile type is a stable crystal form of TiO ₂. It is currently the best performing and most widely used white inorganic pigment. Produced from titanium ore raw materials through sulfuric acid or chlorination processes, the surface is generally coated with inorganic materials (such as aluminum, silicon oxides) and treated with organic materials to improve dispersibility and weather resistance. 
Another crystal form: anatase type (type A), with good whiteness but poor weather resistance, commonly used in indoor coatings and papermaking, and cannot be used outdoors; Rutile type is mainly used for outdoor weather resistance. 
Core physical and chemical indicators 
-Chemical formula: TiO ₂ 
-TiO ₂ content: ≥ 90% (varies among different grades, generally higher by chlorination method) 
-Crystal form: Rutile 
-Refractive index: 2.72 (very high, strong coverage, core principle of white pigment) 
-Appearance: White powder 
-PH value: 6.0~9.0 
-Specific gravity: 4.2 g/cm ³ 
Main performance characteristics 
High coverage and color fading power: With a high refractive index, the coverage ability is much higher than that of ordinary white fillers such as calcium carbonate and lithopone at the same dosage, effectively reducing the dosage of the formula. 
Excellent weather resistance: With stable crystal structure and strong UV resistance, it is not prone to powdering, yellowing, or fading after long-term outdoor use. It is the preferred white pigment for outdoor coatings. 
High whiteness, good luster, and uniform coloring; After coating treatment, the powder has excellent dispersibility and is easily dispersed in resin and coating systems. 
Good chemical stability: acid and alkali resistant, inert, and does not react with most substrates. 
Non toxic, in compliance with relevant standards for food and contact materials (food grade grades). 
1. Uncoated rutile titanium dioxide powder has high photoactivity and can catalyze the degradation of organic resins. Surface coating is required for commercial pigment grades. 
2. The powder is ultrafine and dust-proof during operation; The proportion is relatively high, and attention should be paid to preventing settlement in the formula. 
3. It cannot be used in high-temperature and strong reducing environments as it will change color. 
Two types of production processes 
1. Chlorinated gold red stone titanium dioxide: high purity, less impurities, better whiteness and weather resistance, stable batch, high-end coatings, plastics, inks; The price is on the high side. 
2. Sulfuric acid method gold red stone titanium dioxide: high cost-effectiveness, large domestic production capacity, meeting the needs of ordinary outdoor coatings, plastics, and rubber. 
Application Fields 
1. Coatings industry (maximum use): exterior latex paint, industrial anti-corrosion paint, powder coating, automotive paint, ship paint, relying on excellent weather resistance. 
2. Plastic industry: coloring of plastics such as PP, PE, PVC, ABS, PA66, etc; Masterbatch, profile, household appliance shell, anti-aging, prevent ultraviolet aging and brittleness of plastic. 
3. Rubber&Paper: Rubber white/light colored products; Decorative paper, coated paper. 
4. Ink: High grade printing ink with high gloss and sun resistance. 
5. Daily chemical/cosmetics: cosmetic grade rutile titanium dioxide, used as a physical sunscreen (UV blocking).