Polypropylene glycols are polymers of propylene oxide. They are clear, viscous liquids with low pour points. Viscosity increases and water solubility decreases with increasing molecular weight.

DOW P-series polyglycols are linear polymers containing two terminal hydroxyl groups. DOW PT-series polyglycols are glyceryl ether polymers containing three terminal hydroxyl groups.

Properties1

Polypropylene Glycol CTFA Nonmenclature Molecular Weight Specific Gravity2 @25/25°C Average Viscosity3, cSt @40°C Pour Point, °C Refractive Index4@ 25°C Density lb/gal @ 25°C
PT250 250 1.091 285 -18 1.459 9.07
PT700 PPG-10 700 1.033 108 -32 1.453 8.59
PT3000 PPG-55 3000 1.010 235 -27 1.451 8.40
P425 PPG-9 425 1.007 33 -45 1.447 8.39
P1000TB†† PPG-17 1000 1.005 78 -25 1.448 8.38
P1200†† PPG-20 1200 1.003 91 -40 1.448 8.38
P2000†† PPG-26 2000 1.002 160 -30 1.449 8.34
P3000TB   3000 1.003 255 -28 1.448 8.35
P4000†† PPG-30 4000 1.004 455 -26 1.450 8.36


†† Kosher certified products
1 Typical properties, not to be construed as specifications.
2 ASTM D 892
3 ASTM D 445/446
4 ASTM D 1218

Details
For additional information regarding any DOW polypropylene glycol products, please contact your local distributor.