name

item

grade

Highest grade　

Good
grade

Diphenyl ether

Chroma(platinum-cobalt)  ≤

30

50

Crystallization point（℃）        ≥

26.5

26.5

moisture（％）          ≤

0.04　

0.05

content（％）    ≥

99.9

99.5

phenol（％）        ≤

0.005　

0.01

sulfur（％）          ≤

0.0005

0.0008

chlorine≤（ppm）

8

20