Polypropylene Glycols (PPGs)
Overview
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.
PPGs can be blended to obtain liquids with intermediate viscosities. The molecular weights range from low for water-soluble to high for water-insoluble applications.
Properties1
| Polypropylene Glycols |
CTFA Nomenclature |
Molecular Weight |
Pour Point ºC |
Specific Gravity2 @ 25/25ºC |
Average Viscosity3, cSt @ 40ºC |
Flash Point4, ºC |
Average Freezing Point5, ºC |
Refractive Index6 @ 25ºC |
| P400E |
PPG-9 |
400 |
-37 |
|
30 |
|
-49 |
1.451 |
| P425 |
PPF-9 |
425 |
-45 |
1.007 |
33 |
165 |
-45 |
1.447 |
| P1000TB†† |
PPG-17 |
1000 |
-25 |
1.005 |
78 |
>182 |
-25 |
1.448 |
| P1200†† |
PPG-20 |
1200 |
-40 |
1.007 |
91 |
174 |
-41 |
1.448 |
| P2000†† |
PPG-26 |
2000 |
-30 |
1.002 |
160 |
199 |
-31 |
1.449 |
| P3000J |
|
3000 |
— |
—— |
280 |
|
|
— |
| P4000 |
PPG-30 |
4000 |
-26 |
1.005 |
455 |
185 |
-20 |
1.450 |
†† Kosher certified products
1 Typical properties, not to be construed as specifications.
2 ASTM D 892
3 ASTM D 445/446
4 ASTM D 92
5 ASTM D 1177-94
6 ASTM D 1218
Details
For additional information regarding any DOW products, please contact your local distributor.
