2-甲基-2,4-戊二醇
別稱:異己二醇,己烯二醇
CAS NO. 107-41-5
2-甲基-2,4-戊二醇 用途
- 油漆和塗料 :乳膠漆、印刷油墨、顏料分散劑
- 紡織業和制革業的乳液
- 有機磷農藥穩定劑
- 液壓油(液壓油、液壓油高溫潤滑油、剎車油)
- 金屬加工液(金屬表面處理劑 除鏽除油的添加劑)和鑽井液
- 滅火泡沫
- 個人護理配方 ( 洗發液、液體香皂等… )
- 家用及工業用洗滌劑
- 化妝品(日化保濕劑)和香料
- 纖維處理
- 萃取溶劑
- 用於醫藥合成中的溶劑
- 膠粘劑 ( PU 合成, 擴鏈劑 )
- 混凝土和水泥的添加劑 ( 防裂 / 降低收縮量 )
- 木材防腐
- 柴油防凍劑
物理特性
外觀 ...................................................................無色透明液體
純度 %..............................................................................≥99.0
水份 %.............................................................................≤0.10
熔點...................................................................................-40℃
沸點...............................................................................197.5℃
相對密度 20℃........................................................0.92~0.93
閃點 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