Property / Parameter Specification Value
Chemical Name Polytetramethylene Ether Glycol (PTMEG)
CAS Number 25190-06-1
Average Molecular Weight 950 to 1,050 g/mol
Hydroxyl Value 107.0 to 117.0 mg KOH/g
Physical Appearance White, waxy solid/paste at room temp; melts to a water-white, low-
viscosity liquid at
slightly elevated temperatures (~38�C / 100�F)
Acid Number < 0.05 mg KOH/g (typical for PTMEG 1000)
Moisture Content Max 1.0% (typically strictly regulated under 0.02% via dry handling due
to its highly
hygroscopic nature)
Stabilization Formulated with an added antioxidant to prevent thermal and oxidative
degradation during normal
storage.


Key Performance Features