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  Products : Green Solvents - Cyclopentyl methyl ether (CPME)
 

Cyclopentyl methyl ether (CPME) is a totally new hydrophobic ether solvent, Unlike other common ether solvents, CPME has unique excellent properties and is widely applicable as a replacement for Tetrahydrofuran (THF), Methyl Tert-Butyl Ether (MTBE), Dioxane and other existing ether solvents.

 
CAS : 5614-37-9
TSCA : Approved
ELINCS : Approved
 
 

Benefits
 

  • HIGH HYDROPHOBICITY
    Easy separation and recovery from water, reducing emissions and wastewater Wide applicability as a reaction, extraction and crystallization solvent, giving simple and One-pot syntheses.

  • WIDE LIQUIDITY RANGE
    Wide applications from lower to higher temperature, accelerating reaction rate.

  • LOW HEAT OF VAPORIZATION
    Saving energy for distillation and recovery.

  • RESIST PEROXIDE FORMATION
    Low exothermic decomposition energy of solvent containing it's peroxides.

  • NARROW EXPLOSION AREA

  • RELATIVELY STABLE TO ACIDS OR BASES

  • EASY DRYING

 

Applications
 

  • REACTIONS
    Grignard Reaction, Suzuki Coupling, Buchwald Amination, Metal Reductions (NaBH4, LiAlH4, i-Bu2AlH), Reactions with
    n-BuLi, Reactions with Lewis Acid, Friedel Crafts Reactions.

  • EXTRACTIONS

  • CRYSTALLIZATIONS

  • POLYMERIZATIONS

  • COATINGS

 

Physical Properties
 
  CPME THF Diethyl ether Dioxane MTBE
Density (20°C)[g/cm3] 0.86 0.89 0.71 1.03 0.74
Vapor specific gravity (air = 1) 3.45 2.49 2.56 3.3 3.03
Boiling point [°C] 106 65 34.6 101 55
Melting point [°C] <-140 -108.5 -116.3 11.8 -108.7
Viscosity (20°C)[cP] 0.55 0.55 0.2448 1.31 Unknown
Surface tension (20°C)[mN/m] 25.17 26.4 17.3 33.74 19.8
Heat of vaporization (boiling point)[Kcal/kg] 69.2 98.1 86.08 98.6 81.7
Specific heat (20°C)[Kcal/kg・K] 0.4346 0.469 0.5385 0.41 0.51
Refractive index (20°C) 1.4189 1.407 1.353 1.422 1.369
Solubility parameter [cal/ml] 8.4 9.5 7.4 Unknown Unknown
Dielectric constant (25°C) 4.76 7.58 4.197 2.227 Unknown
Dipole moment [D] 1.27 (calcd.) 1.7 1.12 0.45 Unknown
Azeotropic point with water [°C] 83(*) 64 34.2 87.8 -
Solubility in water (23°C)[g/100g] 1.1 ∞ 6.5 ∞ 4.8
Solubility of water in the solvent (23°C)[g/100g] 0.3 ∞ 1.2 ∞ 1.5
Flash point [°C] -1 -14.5 -45 12 -28
Ignition point [°C] 180 205 180-190 180 460
LogPow 1.59 0.47 0.89 -0.42 1.06
Explosion range [vol%] (Lower limit) 1.1 1.84 1.85 2 1.6
Explosion range [vol%] (Upper limit) 9.9 11.8 48 22 15.1
 
* Azeotropic composition: CPME 83.7/water 16.3 (wt%)
oil phase: CPME 98.9/water 1.1 (wt%)
water phase: CPME 0.78/water 99.22 (wt%)
 

 

Organic Processes with CPME vs. THF
 

CPME simplifies processes, reduces wastewater and emissions.
 

 

Peroxide Formation of Ether Solvents

 
 

 

Product Specifications
 
Purity(GC) : 99.9% min
Water : 100ppm max
Color(Hazen No) : 10 max
Peroxide : 50 mgeq/kg max
 

 

Packings
 
170kg Drum, 16kg Can
 

 

Cautions
 

 
 

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