项 目

指标

98级

95级

90级

86级

季戊四醇（C(CH₂OH)₄）ω/%          ≥

98.0

95.0

90.0

86.0

羟基ω/%                          ≥

48.5

47.5

47.0

46.0

干燥减量ω/%                      ≤

0.20

0.50

0.50

0.50

灼烧残渣ω/%                      ≤

0.05

0.10

0.10

0.10

邻苯二甲酸树脂着色度/ 号          ≤

1

2

2

4

终熔点/℃                         ≥

250

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