Terephthalic Acid

Test Item

Specification

PTA Content%

99%

Metal(Fe,Mo,Cr,Ti,Mn,Ni,Co)ppm≤

≤4ppm

Moisture %≤

≤0.5%

Fe Ppm≤

2ppm

DMF Chroma.5%Liquor<APHA>

10

4-CBA Ppm≤

≤25ppm

Acid Num(mg KOH/g)

675±2