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
- 油漆和涂料 ：乳胶漆、印刷油墨、颜料分散剂
- 纺织业和制革业的乳液
- 有机磷农药稳定剂
- 液压油（液压油、液压油高温润滑油、刹车油）
- 金属加工液（金属表面处理剂 除锈除油的添加剂）和钻井液
- 灭火泡沫
- 个人护理配方 ( 洗发液、液体香皂等… )
- 家用及工业用洗涤剂
- 化妆品（日化保湿剂）和香料
- 纤维处理
- 萃取溶剂
- 用于医药合成中的溶剂
- 胶粘剂 ( PU 合成, 扩链剂 )
- 混凝土和水泥的添加剂 ( 防裂 / 降低收缩量 )
- 木材防腐
- 柴油防冻剂
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
