Atactic polypropylene (APP) is an amorphous, soft rubbery thermoplastic material which has the appearance of a viscous waxy paste. It is mostly used as a modifier in bitumen and adhesives.
Brookfield viscosity ηb
240 Pa·s at 149 °C
0.85 g/cm³ at 20 °C
Molar mass M
Flash point Tflash
Vicat softening temperature Tsoft
Refractive index nd
Soluble in: Chlorinated hydrocarbons, diethyl ether, hydrocarbons, isoamyl acetate, toluene; Insoluble in more polar organic solvents with small hydrocarbon groups even at elevated temperatures.
This material data has been provided by Goodfellow.