... ) 20 maxColor (APHA) 10 maxIron (ppm) 0.5 maxPara Toluic Acid (ppm) 120 maxTotal metals Fe, Mn, Co, Cr, Ni, Mo ... polyester products, including polyethylene terphthalate (PET), follows reaction with glycol, reagent for alkali in wool and an additive to poultry feeds ... container (up to 25MT per 20ft container).-------------------------- PTA (Purified Terephthalic Acid)