2-甲基-2,4-戊二醇
别称:异己二醇,己烯二醇
CAS NO. 107-41-5
2-甲基-2,4-戊二醇 用途
物理特性
外观 | 无色透明液体 |
纯度 % | ≥99.0 |
水份 % | ≤0.10 |
熔点 | -40℃ |
沸点 | 197.5℃ |
相对密度 20℃ | 0.92~0.93 |
闪点 closed cup | 93℃ |
SPECIFICATIONS VALUES
Appearance at 20°C | Clear liquid free from suspended materials |
Color (Pt-Co) | ≤ 10 |
Purity (% by weight) | ≥ 99.0 |
Water Content (% by weight) | ≤ 0.10 |
Acidity as acetic acid (% by weight) | ≤ 0.005 |
Density at 20°C (g/cm3 ) | 0.920 - 0.923 |
Distillation range (°C) | 195.0 - 200.0 |
PHYSICAL DATA
Molecular weight | 118.18 |
Boiling point at 1013 hPa | 197.5 °C |
Vapor pressure at 20°C | 0.07 hPa |
Relative evaporation rate (n-butyl acetate = 1) | 0.01 |
Freezing point | - 40 °C |
Viscosity at 20°C | 38 mPa.s |
Surface tension at 25°C | 28.5 mN/m |
Refractive index at 20 °C | 1.4276 |
Latent heat of vaporization | 452 kJ/kg |
Specific heat (liquid at 20°C) | 1.99 kJ/kg/K |
Heat of combustion at 25°C | 29880 kJ/kg |
Flash point (closed cup) | 97 °C |
Autoignition temperature | 306 °C |
Explosivity limits in air (lower / upper) | 1.3 / 9.0 % (v/v) |
Electrical conductivity at 22 °C | 0.24 µS/m |
Water solubility at 20 °C | complete |
Azeotrope with water | none |
Hansen solubility parameters at 25°C ( ∂t, ∂d, ∂p, ∂h) | 25.2 / 15.8 / 8.4 / 17.8 MPa1/2 |
包装︰ 195KG/桶