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Property | Unit | Technical Data | Test Method | |
WS-501 | WS-502 | |||
Intrinsic Viscosity | dL/g | 0.80±0.020 | 0.75±0.020 | GB/T 14190-2008 5.1 |
Melting Point | ℃ | ≥M1±2 | ≥M1±2 | GB/T 14190-2008 5.3 |
Color | b value | 2.0±1.0 | 1.5±1.0 | GB/T 14190-2008 5.5 |
DEG Content | % | ≤1.5 | ≤1.5 | GB/T 14190-2008 5.2 |
Carboxyl End Group | mol/t | ≤30 | ≤30 | GB/T 14190-2008 5.4 |
Moisture(mass fraction) | % | ≤0.4 | ≤0.4 | GB/T 14190-2008 5.7 |
Ash(mass fraction) | % | ≤0.05 | ≤0.05 | GB/T 14190-2008 5.10 |
Powder | mg/kg | ≤50 | ≤50 | GB/T 14190-2008 5.8 |





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