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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