TPA contains various and many different kinds of matters like this

Name of product TPA (TEREPHTHALIC ACID)
External appearance White powder
Molecular weight 166.13
Flashing point 260¡É
Ignition point 496¡É
Point of fusion 0.002%
Vapor tension 0.5mmHG (at 120¡É)
Specific gravity 1.5
CAS number 100-21-0