Introduction:| 
					 Item  | 
				
					 Index  | 
			
| 
					 Model  | 
				
					 T500G  | 
			
| 
					 Crystal  | 
				
					 Rutile  | 
			
| 
					 Na, %≤  | 
				
					 0.003  | 
			
| 
					 Fe, % ≤  | 
				
					 0.005  | 
			
| 
					 Al, %≤  | 
				
					 0.005  | 
			
| 
					 Cl-, % ≤  | 
				
					 0.01  | 
			
| 
					 D50(μm)≤  | 
				
					 0.5-1.0  | 
			
| 
					 TiO2, %≥  | 
				
					 99.9  | 
			
| 
					 Specific surface area  | 
				
					 2-4m2/g  |