Purified Terephthalic acid (PTA) is one of the important bulk organic raw materials, widely used in chemical fiber, light industry, electronics, construction and other aspects of the national economy.

Item Results Units
Acid number 675. 4 mg KOH/g
Ash 2 mg/kg  
Total significant metals(Fe, Co, Cr, Mn,Mo, Ni,Ti) 0. 1 mg/kg 1
Iron 0. 01 mg/kg
4-CBA 14 ppm  
Paratoluic acid 123 mg/kg  
Moisture 0.12 wt%  
△Y 3    
b* 0. 92    
Median Particle Size 134 um  
Particle size distribution, >250 5 16. 6 %  
Particle size distribution,〈45 5 12 %  
Appearance White dry Free-flowing crystals
 

It is an important raw material for the manufacture of polyester resin, film, fiber, insulating paint and engineering plastics.