Item: Specification
Acid number (mg KOH/gm): 675±2
4-CBA (ppm w/w ): max 25
p-Toluic acid (ppm w/w): max 150
Water (% w/w): max 0.2
b*(colour): max 1.2
APHA colour(2N KOH): max 10
Ash(ppm w/w): max 9
Metals (ppm w/w): None greater than 1 and in total max 4
As the main raw material of polyester products including fibre, bottle, film, paint, coating and PBT engineering plastics etc.