Appearance

clear, water-white liquid

Composition

biphenyl and diphenyl oxide

Crystallization point

12 ℃

Moisture

300ppm

Flash point

124 ℃

fire  point

127 ℃

Autoignition point

621 ℃

Kinematic viscosity
40 ℃
100 ℃

2.48mm2/s
0.99mm2/s

Density (25 ℃ )

1060kg/m2

Specific gravity(16 ℃ /16 ℃)

1.069

Coefficient of thermal expansion (200 ℃ )

0.000979/ ℃

Volumetric contraction upon  freezing

6.27%

Volumetric expansion upon  melting

6.69%

Surface tension in air at 25 ℃

36.6dyn/cm

Specific resistivity(20 ℃)

6.4 × 1011 ohm-cm

Average  molecular weight

166

Heat of fusion

23.25kcal/kg

Normal  boiling point

257 ℃

Heat of vaporization at the maximum use temperature 400 ℃

206kJ/kg

Optimum use range 
Liquid phase
Vapor  phase

12-400 ℃
257-400 ℃

Maximum film temperature

425 ℃

Pseudocritical temperature

499 ℃

Pseudocritical pressure

33.1bar

Pseudocritical density

327kg/m2