3.1.1.102 0.0073 - ethylene terephthalate pH 7.0, 30°C 739707 3.1.1.102 3.9 - bis(2-hydroxyethyl) terephthalic acid pH 8.5, 60°C 737630 3.1.1.102 7.3 - ethylene terephthalate pH 8.5, 60°C 737630