Materials Matrix

Attribute	Polypropylene Random	Polypropylene Homopolymer	PVC Polyvinyl Chloride	Polystyrene High Impact
High Temperature	Fair-Good	Good	Poor	Fair
Low Temperature	Poor Frozen Good Refrigerated	Poor Frozen Good Refrigerated	Good Frozen Very Good Refrigerated	Poor Frozen Good Refrigerated
Clarity	Good	Fair	Very Good	Poor
Moisture Barrier	Very Good	Very Good	Good	Poor
Oxygen Barrier	Fair	Fair	Good	Poor
Greases/Oils	Very Good	Very Good	Good	Fair
Density (g/cc)	.09	.09	1.35	1.04
Microwavability	Good	Good	Poor	Poor-Fair
Heat Distortion Temperature °F	190-210	200-240	125-155	160-180