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DOWANOL™ PMA Glycol Ether

DOWANOL™ PMA glycol ether is a fast evaporating solvent that has the lowest viscosity of the entire DOWANOL product line. The molecule is capped with an acetate group, which reduces its polarity and viscosity, as well as eliminates the presence of the reactive hydrogen found in other glycol ethers. These features make it an excellent solvent choice for urethanes and other proton-sensitive systems.

Used in:

  • Solvent-based coatings
  • Solvent-based silk screen printing inks
  • Coating systems where OH reactivity is unwanted (e.g. PU/isocyanate and epoxy)

Advantages:

  • Powerful solvency
  • High dilution ratio
  • Relatively fast evaporation rate
  • Lowest viscosity; superb viscosity reduction

Typical Physical Properties
These properties are typical but do not constitute specifications.

Molecular weight (g/mol)

132.2

Boiling point @ 760 mmHg, 1.01 bar

295°F146°C
Flash point (Tag Closed Cup)108°F42°C
Freezing point-87°F-66°C
Vapor pressure@ 20°C — extrapolated2.8 mmHg
3.7 mbar
Specific gravity (25/25°C)0.966
Density @ 20°C
         @ 25°C
8.08 lb/gal
8.04 lb/gal
0.968 g/cm³
0.963 g/cm³
Viscosity (cP or mPa•s @ 25°C)

0.8

Surface tension (dynes/cm or mN/m @ 25°C)

26.9

Specific heat (J/g/°C @ 25°C)

1.85

Heat of vaporization (J/g) at normal boiling point

296

Net heat of combustion (kJ/g) — predicted @ 25°C23.8
Autoignition temperature631°F333°C
Evaporation rate(n-butyl acetate = 1.0)
(diethyl ether = 1.0)
0.33
37

Solubility, g/100 g @ 25°C
   Solvent in water
   Water in solvent

 19 (16 %)wt
3.5 (3 %)wt
Hansen solubility parameters (J/cm³)1/2
   _d (Dispersion)
   _p (Polar)
   _h (Hydrogen bonding)
16.1
6.1
6.6
Flammable limits (vol.% in air)
   Lower (measured @ 170°C)
   Upper (measured @ 180°C)
 1.50
7.00