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PET (polyethylene terephthalate)Parameter Unit Grade
PET 4 PET3 PET 2 PET 1
I.V. dL/g 0.80 ± 0.020 0.820 ± 0.020 0.770 ± 0.020 0.870 ± 0.020
DEG % 1.40 ± 0.30 1.40 ± 0.30 1.20 ± 0.30 1.10 ± 0.30
– COOH mmol/kg = 35 = 35 = 35 = 35
AA ug/g = 1.0 = 1.0 = 1.0 = 1.0
Color value L / = 80 = 80 = 80 = 80
B / = 1.0 = 1.0 = 1.0 = 1.0
Powder mg/kg = 100 = 100 = 100 = 100
Melting point °C = 240 = 240 = 245 = 240
Density g/cm3 1.40 ± 0.01 1.40 ± 0.01 1.40 ± 0.01 1.40 ± 0.01
Moisture % = 0.2 = 0.2 = 0.2 = 0.2
Ash % = 0.08 = 0.08 = 0.08 = 0.08
