PBT(polybutylene terephthalate) BM433(Qualifued) Instrinsic viscosity(dL/g):1.380±0.040

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BM433(Qualifued)
Instrinsic viscosity(dL/g):1.380±0.040
Melting point(℃):223.0±3.0
COOH content(mol/t): ≤30
Color value(b):4.5±3.0
Color value(L):≥87
Moisture(%):≤0.40
Ash content(mg/kg):≤300
Hundred-grain weight(g):M±0.30
Powder(mg/kg): ≤200
Different shape chip(%):≤0.4
Different color chip(PCS/500g): ≤1.0